Market pulse, built daily.
Daily US market recaps, weekly and monthly reviews, and notes on building a professional-grade terminal for retail traders. Written from the tape, not the press release.
Stock Market Today: June 2, 2026 — Marvell Surge Lifts S&P to New Record
The S&P 500 and Nasdaq edged to fresh record closes on June 2, 2026, as a 33% melt-up in Marvell powered chip stocks and offset a 3.9% slide in Alphabet.
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Most Shorted Stocks Today: June 2, 2026 — Top 25 Squeeze Candidates
On June 2, 2026, Groupon (GRPN) tops Tapeboard's most-shorted leaderboard with a perfect squeeze score of 100 and short interest at 58.1% of float, leading a board where 20 of the top 25 names carry the FINRA threshold flag.
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May 2026 Stock Market Recap: AI Capex Powers a Record Month
U.S. stocks closed May 2026 at record highs — the Nasdaq up 8.2%, the S&P 500 up 5.0%, and the Dow up 2.9% — as an AI-infrastructure earnings boom led by Nvidia and Dell overpowered a hot April inflation report and a late-month oil crash.
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Stock Market Today: June 1, 2026 — Nvidia Chip Lifts Tech as Oil Spikes
The S&P 500 and Nasdaq closed at record highs on June 1, 2026 — the Nasdaq's first finish above 27,000 — as a new Nvidia AI PC chip powered tech while a U.S.–Iran flare-up spiked crude and dragged the Russell 2000 lower.
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Most Shorted Stocks Today: June 1, 2026 — Top 25 Squeeze Candidates
On June 1, 2026, Groupon (GRPN) tops Tapeboard's most-shorted leaderboard with a perfect 100 squeeze score on 58.1% short interest, while GOVX carries a 551.2% borrow fee and gene-editing biotech names crowd the rest of the top 25.
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Stock Market Today: May 29, 2026 — Dell's AI Blowout Caps a Record May
U.S. stocks closed higher on May 29, 2026, with the S&P 500 up 0.22% to 7,580.06 as a 33% surge in Dell capped an AI-fueled record May, even as energy slid on Iran ceasefire hopes.
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Most Shorted Stocks Today: May 29, 2026 — Top 25 Squeeze Candidates
Groupon (GRPN) tops Tapeboard's most-shorted leaderboard on May 29, 2026 with a perfect squeeze score of 100 and 58.1% short interest, while GOVX carries an extreme 551.2% borrow fee.
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Stock Market This Week (May 25–29, 2026): Dell Ignites AI Rally as Oil Tumbles
U.S. stocks closed a holiday-shortened week at record highs, with the S&P 500 up 1.7% to 7,580.06 for its ninth straight weekly gain as a 33% blowout in Dell reignited the AI-infrastructure trade and a U.S.-Iran ceasefire deal sank crude oil 6%.
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Stock Market Today: May 28, 2026 — Records Hold as PCE Inflation Spikes
The S&P 500 and Nasdaq closed at fresh record highs on May 28, 2026, with the S&P up 0.58% to 7,563.63 as a 36% surge in Snowflake powered AI-software gains — even after April PCE inflation jumped to 3.8%, its hottest in nearly three years.
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Most Shorted Stocks Today: May 28, 2026 — Top 25 Squeeze Candidates
GRPN tops Tapeboard's most shorted stocks leaderboard on May 28, 2026 with a perfect 100 squeeze score and 58.1% short interest, leading a board where borrow costs split between three triple-and-double-digit-fee outliers and a deep group of high-SI biotech and clean-energy names.
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Stock Market Today: May 27, 2026 — Dow Hits New Record as Iran Peace Hopes Crash Oil
The Dow closed at a fresh record on May 27, 2026 while the S&P 500 and Nasdaq finished flat, as rumored U.S.-Iran progress and a 5.5% crude oil collapse rotated money out of energy and chips into consumer names.
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Most Shorted Stocks Today: May 27, 2026 — Top 25 Squeeze Candidates
Groupon (GRPN) tops Tapeboard's most shorted stocks list on May 27, 2026 with a perfect 100 squeeze score, 59.2% short interest, and 58.1% float utilization, leading a board where 18 of 25 names sit on the FINRA threshold list.
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What is a Failure to Deliver? Definition, Formula, and Example
A failure to deliver (FTD) occurs when a party in a securities trade fails to deliver the shares or cash by the standard settlement date, most often associated with short selling and tracked publicly by the SEC.
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What is a Symmetrical Triangle? Definition, Formula, and Example
A symmetrical triangle is a continuation chart pattern in which price compresses between a descending resistance line of lower highs and an ascending support line of higher lows, with both trendlines converging toward an apex at roughly mirror-image angles.
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What is Cumulative Delta? Definition, Formula, and Example
Cumulative delta is a running sum of buy-initiated minus sell-initiated volume, measuring net aggressive participation in a security to reveal whether buyers or sellers are paying up to get filled.
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What is Stochastic RSI? Definition, Formula, and Example
Stochastic RSI is a momentum oscillator that applies the stochastic formula to RSI values rather than to raw price, measuring where the current RSI sits within its recent range to produce a faster, more sensitive overbought/oversold signal.
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What is the Awesome Oscillator? Definition, Formula, and Example
The Awesome Oscillator is a momentum indicator developed by Bill Williams that plots the difference between a 5-period and 34-period simple moving average of bar midpoints, oscillating around a zero line to flag momentum shifts before they appear in slower moving-average crossovers.
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Stock Market Today: May 26, 2026 — Micron Rips 19% as Chips Lead Records
The S&P 500 closed 0.61% higher at a record 7,519.12 on May 26, 2026, as Micron surged 19% on a UBS upgrade, semiconductors led the Nasdaq up 1.19%, and easing Strait of Hormuz tensions knocked WTI crude down 5.2%.
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What is a Box Spread? Definition, Formula, and Example
A box spread is a four-leg options strategy combining a bull call spread and a bear put spread at the same strikes to lock in a risk-free interest rate equivalent to a synthetic loan.
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What is a Synthetic Position? Definition, Formula, and Example
A synthetic position is an options or stock combination that replicates the payoff profile of another instrument, derived from put-call parity to achieve identical economics through different legs.
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What is Put-Call Parity? Definition, Formula, and Example
Put-call parity is the no-arbitrage relationship stating that a European call minus a European put at the same strike and expiration equals the underlying price minus the present value of the strike.
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What is the High-Low Index? Definition, Formula, and Example
The High-Low Index is a market breadth indicator that measures the percentage of stocks making new 52-week highs versus new 52-week lows, smoothed by a 10-day moving average.
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What is the McClellan Summation Index? Definition, Formula, and Example
The McClellan Summation Index is a long-term breadth indicator that sums daily McClellan Oscillator values to track the cumulative momentum of advancing versus declining stocks on the NYSE.
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Stock Market Today: May 25, 2026 — US Markets Closed for Memorial Day
US stock markets were closed Monday, May 25, 2026 in observance of Memorial Day, with the Dow heading into the long weekend at a fresh record of 50,579.70 and trading set to resume Tuesday with a packed slate including the April PCE inflation print and earnings from Salesforce, Dell, and Costco.
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Most Shorted Stocks Today: May 25, 2026 — Top 25 Squeeze Candidates
Enveric (ENVB) tops Tapeboard's most-shorted-stocks board on May 25, 2026 with a perfect 100 squeeze score and a 249% annualized borrow fee, leading Groupon (GRPN), RH, CleanSpark (CLSK), and Recursion (RXRX) into a holiday-shortened week dominated by FINRA threshold names.
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What is a Diagonal Spread? Definition, Formula, and Example
A diagonal spread is a two-leg options position combining different strikes and different expirations, designed to harvest time decay on the short leg while holding directional exposure on the long leg.
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What is a Hanging Man? Definition, Formula, and Example
A hanging man is a single-candle bearish reversal pattern with a small body at the top of the range and a long lower shadow, signaling distribution at the end of an uptrend.
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What is a Stock Split? Definition, Formula, and Example
A stock split is a corporate action that increases the number of outstanding shares while proportionally reducing the share price, leaving market capitalization unchanged.
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What is an IPO? Definition, Formula, and Example
An initial public offering (IPO) is the first sale of a private company's shares to public investors through a regulated stock exchange listing.
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What is the VIX Term Structure? Definition, Formula, and Example
The VIX term structure is the curve of S&P 500 implied volatility across multiple forward horizons — 9-day, 30-day, 3-month, 6-month, and 1-year — used to identify volatility regime.
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What is a Renko Chart? Definition, Formula, and Example
A Renko chart is a Japanese price-only chart that prints a new fixed-size brick each time price closes beyond the prior brick by that brick's value, stripping time and minor noise from the visual to expose trend structure.
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What is the Chaikin Money Flow? Definition, Formula, and Example
Chaikin Money Flow is a volume-weighted oscillator developed by Marc Chaikin that sums money-flow volume over a 20-bar window and divides by total volume, producing a value between -1 and +1 that quantifies sustained buying or selling pressure.
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What is the Hull Moving Average? Definition, Formula, and Example
The Hull Moving Average is a low-lag moving average developed by Alan Hull in 2005 that combines three weighted moving averages — one at half the period, one at the full period, and a final smoothing at the square root of the period — to track price with materially less lag than EMA or SMA.
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What is the MOVE Index? Definition, Formula, and Example
The MOVE Index measures the bond market's 30-day expected volatility, derived from the implied volatility of one-month over-the-counter options on 2-, 5-, 10-, and 30-year US Treasury futures.
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What is the Wyckoff Method? Definition, Formula, and Example
The Wyckoff Method is a price-and-volume framework developed by Richard D. Wyckoff in the 1930s that maps every market cycle into four phases — accumulation, markup, distribution, and markdown — driven by a hypothetical Composite Operator representing institutional flow.
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What is a Liquidity Sweep? Definition, Formula, and Example
A liquidity sweep is a price-action pattern where price briefly trades through a known stop-loss cluster above a swing high or below a swing low, triggers resting orders, and then reverses sharply.
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What is Pair Trading? Definition, Formula, and Example
Pair trading is a market-neutral strategy where a trader goes long one security and short a correlated security, betting on convergence of the spread rather than the direction of either name.
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What is the NYSE TICK Index? Definition, Formula, and Example
The NYSE TICK Index is a real-time market breadth indicator that measures the net number of NYSE-listed stocks trading on an uptick versus a downtick, used by day-traders to gauge intraday conviction.
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What is the VVIX? Definition, Formula, and Example
VVIX is the Cboe 'VIX of the VIX' Index — it measures the market's expected 30-day volatility of VIX itself, calculated from VIX option prices, and signals demand for tail hedges.
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What is Value at Risk (VaR)? Definition, Formula, and Example
Value at Risk (VaR) is a quantitative risk metric that estimates the maximum expected loss of a portfolio over a defined horizon at a specified confidence level under normal market conditions.
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Stock Market Today: May 22, 2026 — Dow Notches Fresh Record Into Holiday Weekend
US stocks closed higher on May 22, 2026, with the Dow gaining 294 points to a fresh record and the S&P 500 booking an eighth straight weekly advance as 10-year Treasury yields eased into the Memorial Day weekend.
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Most Shorted Stocks Today: May 22, 2026 — Top 25 Squeeze Candidates
Groupon (GRPN) leads Tapeboard's most-shorted leaderboard on May 22, 2026 with a maximum squeeze score of 100 and 59.2% short interest, in a session dominated by FINRA-threshold names and a handful of triple-digit borrow-fee outliers.
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Stock Market This Week (May 18–22, 2026): Dow Hits Record as Nvidia Roars
The Dow set a fresh record high to cap an eighth straight winning week for the S&P 500 as Nvidia's $81.6 billion quarter, fading Iran tensions, and a pullback in Treasury yields powered the rally.
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What is a Trading Halt? Definition, Formula, and Example
A trading halt is a temporary suspension of trading in a security, ordered by the listing exchange or regulator, that prevents orders from executing for a fixed period ranging from five minutes to multiple trading days.
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What is Short Selling? Definition, Formula, and Example
Short selling is the practice of borrowing shares from a broker, selling them at the current market price, and buying them back later at a lower price to profit from a decline.
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What is the Black-Scholes Model? Definition, Formula, and Example
The Black-Scholes model is a closed-form mathematical formula that calculates the fair theoretical price of a European call or put option from five inputs: stock price, strike, time to expiration, risk-free rate, and volatility.
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What is the Supertrend Indicator? Definition, Formula, and Example
The Supertrend indicator is a trend-following overlay that plots a single line above or below price based on Average True Range, flipping sides when price closes through it to signal trend direction.
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What is Unusual Options Activity? Definition, Formula, and Example
Unusual options activity (UOA) refers to option contracts trading at volume significantly above their typical baseline, often signaling informed positioning by institutions, hedge funds, or insiders.
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Stock Market Today: May 21, 2026 — Oil Rallies, Nvidia Fizzles, Indices Eke Out Gains
US stocks closed modestly higher on May 21, 2026 as the S&P 500 added 0.24% to 7,472.80 — energy led on a WTI crude spike to $101 while Nvidia's blowout earnings failed to ignite tech and Walmart's soft guidance dragged the Dow.
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Most Shorted Stocks Today: May 21, 2026 — Top 25 Squeeze Candidates
On May 21, 2026, Enveric Biosciences (ENVB) tops the Tapeboard short-squeeze leaderboard with a 100/100 score driven by a 246.4% annualized borrow fee and 45.7% short interest, with 21 of the top 25 names flagged on the FINRA threshold list.
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What is a Stock Buyback? Definition, Formula, and Example
A stock buyback (share repurchase) is a corporate action in which a company uses cash to buy its own outstanding shares from the open market, reducing share count and mechanically increasing earnings per share.
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What is Options Assignment? Definition, Formula, and Example
Options assignment is the process by which a short option holder is obligated to fulfill the contract — buying stock on a short put or delivering stock on a short call — when the long holder exercises the option.
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What is Realized Volatility? Definition, Formula, and Example
Realized volatility (RV) is the actual historical standard deviation of an asset's log returns, annualized — a backward-looking measure of how volatile an asset has been, in contrast to implied volatility, which prices the market's forward expectation.
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What is the FOMC? Definition, Formula, and Example
The Federal Open Market Committee (FOMC) is the 12-member policymaking arm of the Federal Reserve that sets the US federal funds target rate, conducts open market operations, and publishes the quarterly Summary of Economic Projections.
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What is TWAP? Definition, Formula, and Example
TWAP (time-weighted average price) is an execution benchmark and algorithm that slices a parent order into equal-sized child orders released at uniform time intervals across a fixed window, regardless of trading volume.
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Stock Market Today: May 20, 2026 — Oil Slides, Airlines Surge, Dow Reclaims 50,000
US stocks snapped a three-day losing streak on May 20, 2026 as progress in US-Iran ceasefire talks crushed crude prices, pulled the 10-year Treasury yield down to 4.57%, and sent the Dow up 1.30% to reclaim 50,000, the S&P 500 up 1.28% to 7,432.97, and the Nasdaq up 1.53% ahead of Nvidia earnings.
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Most Shorted Stocks Today: May 20, 2026 — Top 25 Squeeze Candidates
ENVB tops Tapeboard's most-shorted-stocks board on May 20, 2026 with a perfect 100 squeeze score, anchored by a 260.1% annualized borrow fee against 45.7% short interest and 0.1 days to cover.
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A trading terminal vs a $39.95/month research tool: the job-to-be-done gap
Yahoo Finance Gold is $39.95/month for portfolio research. Tapeboard Pro is $39/month — or $290/year ($24/month) billed annually — for an active-trader terminal. The prices sit in the same band. The job-to-be-done gap is structural: one is a tool you read, the other is a tool you operate.
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The active trader's stack: broker, terminal, charting
Most retail traders are running a stack they never deliberately built — a brokerage app, a free charting site, a Discord, and a screenshot folder. The serious-trader stack has three deliberate layers. Here's what each layer does and which tools fit.
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Stock Market Today: May 19, 2026 — Chip Selloff Drags Indexes to Third Straight Loss
US stocks closed lower for a third straight session on May 19, 2026 as a 7% three-day slide in the Philadelphia Semiconductor Index, a renewed jump in the 10-year Treasury yield to 4.66%, and continued uncertainty over Iran pulled the Nasdaq down 1.43%, the S&P 500 down 0.87%, and the Dow off 0.37%.
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Most Shorted Stocks Today: May 19, 2026 — Top 25 Squeeze Candidates
ENVB tops Tapeboard's most-shorted-stocks board on May 19, 2026 with a perfect 100 squeeze score, anchored by a 260.1% annualized borrow fee against 45.7% short interest and 0.1 days to cover.
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Robinhood Legend is great. Here's what it doesn't do.
Robinhood Legend is a real upgrade for Robinhood traders — free desktop, 8-chart layouts, Cortex AI scans at $5/mo with Gold. But Legend is a brokerage front-end. The research surface most active traders need lives outside it.
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Why active traders need more than Yahoo Finance Gold in 2026
Yahoo Finance Gold at $39.95/mo is well-built for portfolio research. For traders whose decisions are measured in minutes rather than quarters, the gaps are structural: no custom-criteria scanner, no halt feed, no sub-90-second filing alerts, no premarket scanner.
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Stock Market Today: May 18, 2026 — Tech Slides, 10-Year Yield Hits One-Year High
US stocks finished mixed on May 18, 2026 as the 10-year Treasury yield jumped to a one-year high of 4.60%, pressuring tech ahead of NVIDIA earnings while energy and a $66 billion Dominion–NextEra deal lifted defensive corners of the tape.
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Most Shorted Stocks Today: May 18, 2026 — Top 25 Squeeze Candidates
ENVB tops Tapeboard's most-shorted-stocks board on May 18, 2026 with a perfect 100 squeeze score, driven by a 260.1% annualized borrow fee against 45.7% short interest.
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Stock Market Today: May 15, 2026 — Yields Spike, Tech Leads Sell-off
US stocks fell sharply on May 15, 2026 as the 10-year Treasury yield jumped to 4.59% and crude oil surged 3.6% to $104.77, with the S&P 500 closing 1.24% lower at 7,408.50 and the Nasdaq dropping 1.54% to 26,225.14.
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Most Shorted Stocks Today: May 15, 2026 — Top 25 Squeeze Candidates
Enveric Biosciences (ENVB) leads Tapeboard's most shorted stocks on May 15, 2026 with a perfect 100 squeeze score, a 340.7% annualized borrow fee, and 45.7% short interest as a fraction of float.
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Stock Market This Week (May 11–15, 2026): Hot CPI and a 10% Oil Spike End the Tech-Led Melt-Up
A 3.8% April CPI print, a 1.4% PPI shock, and a 10% surge in WTI crude pushed the 10-year Treasury yield to 4.59% and triggered a hard rotation out of tech into energy, snapping the Nasdaq's six-week win streak while the S&P 500 squeaked out a seventh straight weekly gain at 7,408.50.
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What is a Break of Structure? Definition, Formula, and Example
A break of structure (BOS) is a confirmed close beyond the most recent swing high or low, signaling that the prevailing trend has extended in the same direction.
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What is a Fair Value Gap? Definition, Formula, and Example
A fair value gap is a three-candle price imbalance where the wicks of the first and third candles fail to overlap, leaving an unfilled range that price often revisits.
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What is a Zero DTE Option? Definition, Formula, and Example
A zero DTE (0DTE) option is a contract that expires on the same trading day it is traded, offering extreme leverage and gamma exposure but with theta decay measured in minutes.
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What is an Order Block? Definition, Formula, and Example
An order block is the last opposing candle before a strong directional move, marking a price zone where institutional orders are presumed to have accumulated.
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What is the CBOE SKEW Index? Definition, Formula, and Example
The CBOE SKEW Index measures the perceived tail risk of the S&P 500 by quantifying how much more expensive far out-of-the-money puts are than at-the-money options.
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Stock Market Today: May 14, 2026 — S&P, Nasdaq Close at Records on Cisco AI Surge
The S&P 500 closed at a record 7,501 on May 14, 2026, gaining 0.77% as a blowout Cisco earnings report sent AI-infrastructure stocks higher and offset a hotter-than-expected April PPI print.
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Most Shorted Stocks Today: May 14, 2026 — Top 25 Squeeze Candidates
Enveric Biosciences (ENVB) tops the May 14, 2026 most-shorted stocks list with a 287.5% annualized borrow fee and 45.7% short interest, leading a leaderboard where 22 of 25 names are flagged on the FINRA short-volume threshold list.
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What is a Bearish Engulfing Pattern? Definition, Formula, and Example
A bearish engulfing pattern is a two-candle reversal signal where a large red candle's body completely engulfs the prior green candle's body, indicating sellers have overwhelmed buyers at a swing high.
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What is a Good-Til-Canceled Order? Definition, Formula, and Example
A good-til-canceled (GTC) order is a buy or sell instruction that remains active in the market until it is executed, manually canceled, or hits the broker's expiration limit — usually 60 to 90 days.
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What is a Ratio Spread? Definition, Formula, and Example
A ratio spread is an options strategy involving an unequal number of long and short contracts at different strikes, typically buying one option and selling two, designed to profit from a directional move within a specific range.
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What is the Donchian Channel? Definition, Formula, and Example
The Donchian Channel is a volatility and trend indicator plotting the highest high and lowest low over a defined lookback period — typically 20 days — used to signal breakouts when price crosses either band.
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What is the Rate of Change Indicator? Definition, Formula, and Example
The Rate of Change (ROC) indicator is a momentum oscillator that measures the percentage change in price between the current close and the close N periods ago, plotted as a centered line around zero.
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Stock Market Today: May 13, 2026 — Tech Powers Record Highs Despite Hot PPI
The S&P 500 closed 0.58% higher at a record 7,444.25 and the Nasdaq jumped 1.20% to 26,402.34 on May 13, 2026, as a semiconductor-led AI rally absorbed a 1.4% April PPI shock that knocked the Dow lower and pressured banks, utilities, and real estate.
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Most Shorted Stocks Today: May 13, 2026 — Top 25 Squeeze Candidates
On May 13, 2026, Enveric Biosciences (ENVB) tops Tapeboard's most-shorted leaderboard with a perfect 100 squeeze score, a 445.3% borrow fee, and 47.9% float utilization, leading a list dominated by high-fee microcaps and FINRA threshold names.
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What is a Bear Trap? Definition, Formula, and Example
A bear trap is a false breakdown below a key support level that triggers short sellers and stop-loss orders before price reverses sharply higher, forcing shorts to cover at a loss.
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What is a Descending Triangle? Definition, Formula, and Example
A descending triangle is a bearish continuation chart pattern formed by a horizontal support line and a series of lower highs, which resolves with a breakdown through support on expanding volume.
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What is a Pennant? Definition, Formula, and Example
A pennant is a short-term continuation pattern formed when price consolidates inside a small symmetrical triangle after a sharp directional move, then breaks out in the same direction as the prior trend.
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What is Level 2 Data? Definition, Formula, and Example
Level 2 data is a real-time market data feed that shows the full depth of the order book — every visible bid and ask at every price level along with the market participant posting each quote — versus Level 1, which shows only the top of book.
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What is the McClellan Oscillator? Definition, Formula, and Example
The McClellan Oscillator is a market breadth indicator equal to the 19-day EMA minus the 39-day EMA of NYSE net advances, used to measure the momentum of participation and identify overbought and oversold breadth extremes.
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Stock Market Today: May 12, 2026 — Hot CPI, Oil Spike Rattle Tech
Stocks finished mixed on May 12, 2026 after a hotter-than-expected April CPI print of 3.8% and a 3.9% spike in WTI crude pushed tech lower, with the S&P 500 down 0.16% to 7,400.96, the Nasdaq off 0.71% to 26,088.20, and the Dow eking out a 56-point gain.
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Most Shorted Stocks Today: May 12, 2026 — Top 25 Squeeze Candidates
ENVB tops the May 12, 2026 short-squeeze leaderboard with a maximum 100 score driven by a 471.4% borrow fee and 45.7% short interest, with 21 of 25 names on the FINRA threshold list.
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What is a Collar Option Strategy? Definition, Formula, and Example
A collar is an options strategy that pairs long stock with a long protective put and a short covered call, capping both downside losses and upside gains within a defined price range.
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What is Elliott Wave Theory? Definition, Formula, and Example
Elliott Wave Theory is a technical analysis framework that holds financial markets move in repeating fractal patterns of five impulse waves with the trend followed by three corrective waves against it.
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What is the Aroon Indicator? Definition, Formula, and Example
The Aroon indicator measures how recently the highest high and lowest low occurred within a lookback window, plotting two lines that oscillate between 0 and 100 to gauge trend strength and direction.
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What is the Fear and Greed Index? Definition, Formula, and Example
The Fear and Greed Index is a composite market sentiment gauge that scores investor psychology from 0 (extreme fear) to 100 (extreme greed) using seven equally-weighted indicators of price action, volatility, and breadth.
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What is Vanna? Definition, Formula, and Example
Vanna is a second-order option greek that measures how an option's delta changes when implied volatility changes, or equivalently how vega changes when the underlying price moves.
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Borrow Rates Explained: Why Your Short Position Bleeds Overnight
A borrow rate is the annualized cost to borrow shares for shorting. Hard-to-borrow names can cost 50-200% per year. Daily carry is position-value times rate divided by 365 — and most paper trading platforms charge you nothing.
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L2 Order Book, Walked: How Real Fills Actually Work
What Level 2 actually shows you, how a 10,000-share market order fills when the best ask shows 800, and why mid-price paper trading platforms are lying to you.
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Stock Market Today: May 11, 2026 — Records Hold as Oil Spikes on Iran
The S&P 500 and Nasdaq eked out fresh record closes on May 11, 2026, as semiconductors led tech higher while WTI crude jumped 3.2% after President Trump rejected Iran's revised nuclear proposal.
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Most Shorted Stocks Today: May 11, 2026 — Top 25 Squeeze Candidates
On May 11, 2026, Groupon (GRPN) leads Tapeboard's most-shorted stocks list with a 94.4 squeeze score, 59.4% short interest, and 9.1 days to cover, atop a board where 20 of 25 names carry the FINRA threshold flag.
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Paper Trade to Live Trade: A 90-Day Transition Plan
Twelve weeks from sim to live. Weeks 1-2 setup discovery, 3-4 tag system, 5-8 discipline gates, 9-12 micro-sized live. Honest about what doesn't transfer.
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R-Multiple Explained: Why Pros Size by Risk, Not Dollars
An R-multiple expresses every trade in units of the risk you took on entry. Two worked examples and the one pitfall that breaks the whole framework.
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How to Review a Losing Week Without Quitting
A five-step process for diagnosing a bad week so you separate setup failure from execution failure from variance, then commit to a single adjustment for next week.
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Setup Tagging 101: From 'Breakout' to a System You Can Backtest
A three-layer tag taxonomy (Pattern, Trigger, Context) that turns vague labels like 'breakout' into a system you can actually filter analytics against.
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SSR and LULD: The Two Rules That Will Halt Your Trade
SSR triggers at -10% from prior close and locks shorts to the uptick rule. LULD triggers on 5-min VWAP band breaches and halts trading for 5 minutes. Two regs every active trader will eventually encounter live.
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Trade Journal vs Spreadsheet: When Excel Stops Scaling
Spreadsheets are fine for under 200 trades. Past that, manual entry plus no auto-calc plus no calendar view becomes the bottleneck. Four inflection points that signal it's time to switch.
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Trader Tax Basics: What Your Journal Needs to Survive an Audit
What records the IRS expects, why a structured journal is easier than reconstructing from broker PDFs, and what your CPA still needs from you that no tool can produce.
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What Is Paper Trading? (And Why Most of It Lies)
Paper trading is supposed to let you learn execution before risking real money. Most retail paper platforms fill at mid-price, ignore borrow costs, and skip SSR + LULD entirely. That's not paper trading. That's a video game.
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What is a LEAP Option? Definition, Formula, and Example
A LEAP (Long-term Equity AnticiPation Security) is a stock or index option with an expiration date more than 9 months away, giving traders long-dated leveraged exposure with slower theta decay than short-dated contracts.
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What is a Morning Star Pattern? Definition, Formula, and Example
A morning star is a three-candle bullish reversal pattern at the end of a downtrend, composed of a long bearish candle, a small-bodied star, and a long bullish candle that closes well into the first candle's body.
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What is an Ascending Triangle? Definition, Formula, and Example
An ascending triangle is a bullish continuation chart pattern formed by a flat horizontal resistance line and a rising trendline of higher lows, signaling accumulation that usually resolves with an upside breakout.
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What is an Iceberg Order? Definition, Formula, and Example
An iceberg order is a large limit order split into smaller visible chunks, with most of the size hidden from the public order book; each visible slice auto-refreshes after a fill until the full order is executed.
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What is Maximum Drawdown? Definition, Formula, and Example
Maximum drawdown is the largest peak-to-trough decline in a portfolio's value over a given period, expressed as a percentage, and serves as the standard measure of worst-case downside risk.
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What is a Double Bottom Pattern? Definition, Formula, and Example
A double bottom is a W-shaped bullish reversal pattern where price tests a support level twice with a rally between the two lows, confirmed by a breakout above the intervening peak with an upward break-out rate of 64%.
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What is a Falling Wedge? Definition, Formula, and Example
A falling wedge is a bullish chart pattern formed by two downward-sloping, converging trendlines that resolves upward roughly 68% of the time, appearing both as a downtrend reversal and as a continuation pattern within an uptrend.
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What is a SPAC? Definition, Formula, and Example
A SPAC (Special Purpose Acquisition Company) is a publicly traded shell company that raises capital via IPO to acquire a private business within 18-24 months, taking that business public without a traditional IPO process.
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What is Gamma Scalping? Definition, Formula, and Example
Gamma scalping is an options strategy that delta-hedges a long-gamma position by buying and selling the underlying as price moves, capturing profit when the underlying's realized volatility exceeds the implied volatility paid for the options.
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What is the Commodity Channel Index? Definition, Formula, and Example
The Commodity Channel Index (CCI) is an unbounded momentum oscillator that measures how far an asset's price has deviated from its statistical average, with readings above +100 marking overbought and below −100 marking oversold.
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What is a Double Top? Definition, Formula, and Example
A double top is a bearish reversal chart pattern formed by two consecutive peaks at roughly the same price level separated by a moderate trough, confirmed when price breaks below the trough's low.
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What is a Rising Wedge? Definition, Formula, and Example
A rising wedge is a bearish chart pattern formed by two converging upward-sloping trendlines, where the lower support line rises faster than the upper resistance line, signaling exhausting upside momentum.
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What is a Shooting Star? Definition, Formula, and Example
A shooting star is a single-candle bearish reversal pattern with a small real body near the session low and an upper shadow at least twice the body's length, formed at the top of an uptrend.
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What is an Iron Butterfly? Definition, Formula, and Example
An iron butterfly is a four-leg, defined-risk options strategy that sells an at-the-money straddle and buys protective wings at equidistant strikes, profiting when the underlying expires near the short strike.
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What is the Arms Index (TRIN)? Definition, Formula, and Example
The Arms Index, or TRIN, is a market breadth indicator that compares the ratio of advancing to declining stocks against the ratio of advancing to declining volume — values above 1.0 are bearish, below 1.0 are bullish.
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Stock Market Today: May 8, 2026 — Jobs Beat Powers Nasdaq to Record Close
The S&P 500 and Nasdaq closed at fresh record highs on May 8, 2026 after April nonfarm payrolls printed +115K versus +55K consensus, with the S&P 500 up 0.84% to 7,398.93 even as the Russell 2000 dropped 1.63%.
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Most Shorted Stocks Today: May 8, 2026 — Top 25 Squeeze Candidates
Groupon (GRPN) tops Tapeboard's May 8, 2026 most-shorted leaderboard with an 89.3 squeeze score, 59.4% short interest to float, and 9.07 days to cover, leading a board where 21 of the top 25 names sit on the FINRA threshold list.
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Stock Market This Week (May 4–8, 2026): Jobs Beat, Iran Ceasefire Power Sixth Straight Win
A blowout April jobs report (+115K vs. +65K consensus) and on-again, off-again U.S.–Iran ceasefire headlines powered the S&P 500 up 2.3% to a record 7,398.93 and the Nasdaq up 4.5% to 26,247.08 — both notching a sixth straight weekly gain, the longest streak since 2024 — with AMD's data-center blowout and Disney's +88% streaming-income surge leading single-stock action.
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What is a 13F Filing? Definition, Formula, and Example
A 13F filing is a quarterly SEC report disclosing the long U.S. equity holdings of any institutional investment manager with at least $100 million in qualifying assets under management.
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What is a Poor Man's Covered Call? Definition, Formula, and Example
A poor man's covered call is a long-call diagonal debit spread that replicates a covered-call payoff at a fraction of the capital, using a deep ITM LEAP as a stock proxy.
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What is a Reverse Stock Split? Definition, Formula, and Example
A reverse stock split is a corporate action that consolidates multiple existing shares into a single new share at a proportionally higher price, leaving market capitalization unchanged.
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What is the Kelly Criterion? Definition, Formula, and Example
The Kelly Criterion is a position-sizing formula that calculates the fraction of capital to risk on each trade in order to maximize long-term geometric portfolio growth.
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What is the TTM Squeeze? Definition, Formula, and Example
The TTM Squeeze is a volatility indicator that fires when Bollinger Bands contract inside Keltner Channels, signaling compressed price action that resolves into an explosive directional move.
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Stock Market Today: May 7, 2026 — Iran Ceasefire Cracks Halt Record Run
The S&P 500 fell 0.38% to 7,337.11 on May 7, 2026 as Iran accused the U.S. of violating the month-old ceasefire, dragging the Dow down 313 points and pulling every major sector lower a day after a fresh record close.
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Most Shorted Stocks Today: May 7, 2026 — Top 25 Squeeze Candidates
RAYA tops the Tapeboard most shorted stocks leaderboard on May 7, 2026 with a perfect 100 squeeze score, a 229.2% borrow fee, and 100% float utilization, while GRPN and PLAY anchor a list dominated by 60%-plus short interest names.
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What is a Bull Trap? Definition, Formula, and Example
A bull trap is a false breakout above a key resistance level that lures buyers in before reversing sharply, leaving longs trapped at unfavorable prices as the security resumes its decline.
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What is a Dead Cat Bounce? Definition, Formula, and Example
A dead cat bounce is a brief, partial recovery within a sustained downtrend that fails before retracing 38.2% of the prior decline and resumes the downtrend to new lows.
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What is a Trailing Stop Order? Definition, Formula, and Example
A trailing stop order is a stop order whose trigger price automatically ratchets up as price moves favorably, locking in profits while converting to a market order when price retraces by a set dollar amount or percentage.
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What is Heikin Ashi? Definition, Formula, and Example
Heikin Ashi is a Japanese candlestick variant that averages OHLC values across the current and prior bar to smooth price action and visualize trend direction more clearly than standard candles.
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What is Williams %R? Definition, Formula, and Example
Williams %R is a momentum oscillator that measures the position of the current close relative to the highest high over a 14-period lookback, ranging from 0 (overbought) to -100 (oversold).
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Stock Market Today: May 6, 2026 — Iran Peace Hopes, AMD Lift Stocks to Records
On May 6, 2026 the S&P 500 closed at a record 7,365.12 (+1.46%) and the Nasdaq jumped 2.02% to 25,838.94 as a reported U.S.–Iran nuclear-and-ceasefire framework crushed crude 9% and a blowout AMD print powered chipmakers.
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Most Shorted Stocks Today: May 6, 2026 — Top 25 Squeeze Candidates
RAYA leads Tapeboard's most-shorted-stocks board for May 6, 2026 with a maxed-out squeeze score of 100 driven by a 234.5% borrow fee and 100% float utilization, while 21 of the top 25 are flagged on the FINRA threshold short-volume list.
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What is a Bullish Engulfing Pattern? Definition, Formula, and Example
A bullish engulfing pattern is a two-candle reversal signal in which a green candle's real body fully engulfs the prior red candle's body, signaling that buyers have overwhelmed sellers.
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What is Gamma Exposure (GEX)? Definition, Formula, and Example
Gamma exposure (GEX) is the aggregate gamma position of options dealers across all listed strikes on an underlying, expressed in dollars of share-buying or selling required per 1% move.
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What is Keltner Channels? Definition, Formula, and Example
Keltner Channels are volatility-based envelopes plotted around an exponential moving average, with the channel width set as a multiple of Average True Range.
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What is Pivot Points? Definition, Formula, and Example
Pivot points are intraday support and resistance levels calculated from the prior session's high, low, and close, used by day traders to anticipate reaction zones.
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What is the Wheel Strategy? Definition, Formula, and Example
The Wheel is an options income strategy that cycles between selling cash-secured puts on a stock until assigned, then selling covered calls until the shares are called away.
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Stock Market Today: May 5, 2026 — Oil Pullback and Intel Record Fuel Broad Rebound
The S&P 500 closed 0.81% higher at 7,259 on May 5, 2026, as easing oil prices and a blockbuster Intel–Apple foundry report triggered a recovery rally after Monday's Middle East-driven selloff.
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Most Shorted Stocks Today: May 5, 2026 — Top 25 Squeeze Candidates
On May 5, 2026, RAYA leads the Tapeboard short squeeze leaderboard with a perfect score of 100 and a 254.2% borrow fee, headlining a top 25 where 21 names carry FINRA threshold flags and three names post short interest above 59% of float.
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What is a Bear Flag Pattern? Definition, Criteria, and Example
A bear flag is a bearish continuation chart pattern formed by a steep price decline followed by a shallow upward-drifting consolidation channel, which resolves downward when price breaks below the lower channel boundary.
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What is a Bull Flag Pattern? Definition, Formula, and Example
A bull flag is a continuation chart pattern consisting of a sharp price surge (the flagpole) followed by a tight, slightly downward-sloping consolidation channel (the flag) that resolves with a breakout resuming the original trend.
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What is a Calendar Spread? Definition, Formula, and Example
A calendar spread is an options strategy that sells a near-term option and buys a longer-dated option at the same strike, profiting from the near-term contract decaying faster than the back-month contract or from a rise in implied volatility.
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What is a Debit Spread? Definition, Formula, and Example
A debit spread is an options strategy where a trader buys one option and simultaneously sells a cheaper option of the same type and expiration at a different strike, paying a net premium that represents the maximum possible loss.
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What is a Hammer Candlestick? Definition, Formula, and Example
A hammer candlestick is a single-bar bullish reversal pattern that forms at the bottom of a downtrend, characterized by a small real body near the top of its range and a lower shadow at least twice the body length, reflecting intraday rejection of lower prices by buyers.
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What is a Market Maker? Definition, Formula, and Example
A market maker is a registered dealer that continuously posts both bid and ask quotes for a security, earning the bid-ask spread in exchange for providing the immediate liquidity that allows other market participants to buy or sell without waiting for a matching counterparty.
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What is a Protective Put? Definition, Formula, and Example
A protective put is an options strategy where a long stock holder buys a put option on the same position to cap maximum downside loss while preserving unlimited upside — functionally equivalent to owning a long call.
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What is a Strangle? Definition, Formula, and Example
A strangle is an options strategy that simultaneously buys an out-of-the-money call and an out-of-the-money put on the same underlying and expiration, profiting when the stock makes a large move in either direction.
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What is Alpha? Definition, Formula, and Example
Alpha is the excess return of a portfolio above what is predicted by its systematic risk exposure (beta), representing the return attributable to skill, security selection, or strategy rather than broad market movement.
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What is Anchored VWAP? Definition, Formula, and Example
Anchored VWAP (AVWAP) is the Volume Weighted Average Price calculated from a user-specified anchor point — such as an earnings date, IPO, or major price pivot — rather than the session open, producing a multi-day cost-basis line that identifies where groups of participants entered the market.
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What is Delta Hedging? Definition, Formula, and Example
Delta hedging is an options risk management technique that neutralizes an option position's directional price exposure by taking an offsetting position in the underlying asset, leaving the trader exposed only to volatility, time decay, and other non-directional risks.
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What is IV Crush? Definition, Formula, and Example
IV crush is the rapid collapse of implied volatility and option premiums that occurs immediately after a binary event — an earnings release, FDA decision, or Fed announcement — is resolved, often causing options buyers to lose money even when their directional call was correct.
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What is IV Rank? Definition, Formula, and Example
IV Rank (IVR) measures where a security's current implied volatility sits relative to its 52-week high and low, expressed as a 0–100 score where 100 means IV is at its annual peak.
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What is Max Pain? Definition, Formula, and Example
Max pain is the strike price at which the total dollar value paid out to all option holders at expiration is minimized — the price that inflicts the greatest collective loss on options buyers.
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What is Mean Reversion? Definition, Formula, and Example
Mean reversion is the statistical tendency of an asset's price, spread, or volatility to return toward its historical average after an extreme deviation — the foundational principle behind pairs trading, volatility arbitrage, and statistical arbitrage strategies.
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What is On-Balance Volume (OBV)? Definition, Formula, and Example
On-Balance Volume (OBV) is a cumulative momentum indicator that adds a session's full volume when the close is higher than the prior close and subtracts it when lower, creating a running total that reveals whether volume is flowing into or out of a security.
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What is Options Rho? Definition, Formula, and Example
Rho is the options Greek that measures the change in an option's theoretical value for every 1 percentage-point (100 basis-point) move in the risk-free interest rate, expressed in dollars per contract.
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What is Order Flow? Definition, Formula, and Example
Order flow is the real-time stream of buy and sell orders reaching a market, analyzed through metrics like delta and cumulative volume delta (CVD) to determine which side — buyers or sellers — is in directional control at a given price level before that information appears in a price chart.
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What is the Average Directional Index (ADX)? Definition, Formula, and Example
The Average Directional Index (ADX) is a technical indicator developed by J. Welles Wilder that measures trend strength on a 0–100 scale — readings above 25 confirm a strong trend, below 20 indicate a trendless, choppy market.
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What is the Commitment of Traders Report? Definition, Formula, and Example
The Commitment of Traders (COT) report is a weekly CFTC publication released every Friday at 3:30 PM ET that discloses the aggregate futures positions of commercial hedgers, large speculators, and small speculators, enabling traders to identify extreme positioning that historically precedes reversals.
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What is the Money Flow Index? Definition, Formula, and Example
The Money Flow Index (MFI) is a volume-weighted momentum oscillator ranging from 0 to 100 that measures the ratio of positive to negative money flow over a 14-period lookback, combining price direction and trading volume into a single bounded indicator often called the volume-weighted RSI.
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What is the Pattern Day Trader Rule? Definition, Formula, and Example
The Pattern Day Trader (PDT) rule is a FINRA regulation requiring any margin account that executes four or more day trades within five business days to maintain a minimum equity of $25,000.
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What is the Sortino Ratio? Definition, Formula, and Example
The Sortino Ratio is a risk-adjusted performance metric that divides excess return by downside deviation — the standard deviation of negative returns only — rather than total volatility, making it more relevant than the Sharpe Ratio for strategies where upside and downside volatility are not symmetric.
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What is Volatility Skew? Definition, Formula, and Example
Volatility skew is the pattern where options at different strike prices on the same underlying carry different implied volatilities, with equity put options consistently priced at higher IV than equivalent calls due to persistent demand for downside protection.
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What is Volume Profile? Definition, Formula, and Example
Volume Profile is a charting indicator that plots the distribution of traded volume at each price level over a selected period, revealing where the market has spent the most and least time trading.
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Stock Market Today: May 4, 2026 — Iran Missiles Spike Oil, Dow Loses 557 Points
The S&P 500 fell 0.41% to 7,200.75 on May 4, 2026, as the UAE's interception of Iranian loitering munitions sent WTI crude surging 4.4% to $106.42, the VIX spiked 7.6% to 18.29, and Amazon's logistics expansion crushed UPS, FedEx, and GXO by 10–18%.
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Stock Market Today: May 1, 2026 — Nasdaq Crosses 25,000 as Apple Earnings Beat Fuels Tech Rally
The S&P 500 notched a record close at 7,230.12 (+0.29%) on May 1, 2026, while the Nasdaq crossed 25,000 for the first time to finish at 25,114.44 (+0.89%), as Apple's blowout Q2 earnings and a surge in AI software stocks overpowered weakness in energy and industrials.
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Stock Market This Week (April 27–1, 2026): All Five Mag Seven Beat, S&P Hits Record
All five Magnificent Seven companies that reported beat Q1 2026 estimates — led by Alphabet's +10% blowout — carrying the S&P 500 up 0.92% to a record 7,230.12 and the Nasdaq to an all-time high of 25,114.44, even as PCE inflation accelerated to 4.5% and the FOMC held rates at 3.50–3.75% with four dissents, the most since 1992.
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Stock Market Today: April 30, 2026 — S&P 500 Caps Best Month Since 2020
U.S. stocks closed April 30, 2026 at record highs as the S&P 500 broke 7,200 for the first time, the Dow surged 790 points, and the index sealed its best month since November 2020 on blowout big-tech earnings, cooler PCE inflation, and a labor market that refused to crack.
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Most Shorted Stocks Today: April 29, 2026 — Top 25 Squeeze Candidates
RAYA tops Tapeboard's most shorted stocks leaderboard on April 29, 2026 with a perfect 100 squeeze score and a 286.2% annualized IBKR borrow fee, leading a board where 19 of the top 25 names sit on the FINRA short-volume threshold list.
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What is a Cash-Secured Put? Definition, Formula, and Example
A cash-secured put is an options strategy where a trader sells a put option while holding sufficient cash to purchase 100 shares at the strike price, generating income while committing to buy the stock at a lower effective price if assigned.
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What is a Circuit Breaker? Definition, Formula, and Example
A circuit breaker is a regulatory trading halt triggered when the S&P 500 falls by 7%, 13%, or 20% from the prior close, designed to pause panic selling and restore orderly price discovery.
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What is a Cup and Handle Pattern? Definition, Formula, and Example
A cup and handle is a bullish continuation chart pattern where price carves a rounded U-shape followed by a brief consolidation, then breaks out above the rim on expanding volume.
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What is Days to Cover? Definition, Formula, and Example
Days to cover is the ratio of total short interest to the stock's average daily trading volume, expressing how many sessions of normal volume it would take for every short to buy back at once.
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What is Float Utilization? Definition, Formula, and Example
Float utilization is the percentage of a stock's lendable float currently out on loan to short sellers, measuring how much of the available borrow inventory has already been consumed.
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What is a Borrow Fee? Definition, Formula, and Example
A borrow fee is the annualized interest rate a short seller pays the lender of the shares, expressed in percent per year and accruing daily for as long as the position stays open.
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What is the FINRA Threshold Securities List?
The FINRA Threshold Securities List is the official Regulation SHO list of stocks with persistent settlement failures, published daily by FINRA and the listing exchanges since 2005.
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What is the Parabolic SAR? Definition, Formula, and Example
The Parabolic SAR (Stop and Reverse) is a trend-following indicator developed by J. Welles Wilder that plots dots above or below price to mark trailing stop levels and trend reversal points.
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What is the Short Sale Restriction (SSR)? Definition, Formula, and Example
The Short Sale Restriction (SSR), formally SEC Rule 201, bars short sales at or below the national best bid for the rest of the trading day plus the next full session whenever a stock drops 10% or more from the prior close.
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Best Stock Scanners 2026 — The 7 Tools Actually Worth Paying For
A ranked, price-checked comparison of the seven stock scanners retail traders actually use in 2026 — Trade Ideas, Finviz Elite, TradingView, Benzinga Pro, Webull, Tapeboard Pro, and the free Yahoo/Google built-ins — with the verdict on best overall, best free, and best for low-float runners.
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Stock Market Today: April 28, 2026 — Chip Slide on OpenAI Report Pulls Nasdaq Lower
On April 28, 2026, the S&P 500 fell 0.49% to 7,138.80 and the Nasdaq dropped 0.9% as a Wall Street Journal report on slowing OpenAI revenue triggered a sell-off in AI chip stocks while WTI crude pushed above $100 a barrel on stalled US-Iran talks.
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Stock Market Today: April 27, 2026 — Records Hold as Oil Spikes, Small Caps Crack
The S&P 500 and Nasdaq grinded to fresh records on AI chip enthusiasm even as the Dow slipped, oil ripped past $96 on Strait of Hormuz tension, and the Russell 2000 sold off 1.2% into a Fed week.
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Weekly Recap — Week of April 21–25, 2026
Intel's 25% blowout and an extended U.S.–Iran ceasefire pushed the S&P 500 and Nasdaq to fresh records, even as the Dow slipped on weakness in industrials and staples.
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Market Pulse — April 24, 2026
Intel's blowout quarter sent semis to an 18th straight up day and pushed the S&P 500 and Nasdaq to fresh records, while the Dow lagged on energy weakness.
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What is a Head and Shoulders Pattern? Definition, Formula, and Example
A head and shoulders pattern is a bearish reversal chart formation with three peaks—a higher middle peak (the head) flanked by two lower peaks (the shoulders)—that signals a downtrend when price closes below the connecting neckline.
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What is a Margin Call? Definition, Formula, and Example
A margin call is a broker's demand for additional cash or marginable securities when account equity falls below the maintenance margin requirement, after which the broker may liquidate positions without further notice.
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What is a Stop-Limit Order? Definition, Formula, and Example
A stop-limit order is a conditional order with two prices—a stop trigger and a limit price—that converts to a limit order when the stop is hit, providing price protection at the cost of fill certainty during fast or gapping markets.
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What is the Ichimoku Cloud? Definition, Formula, and Example
The Ichimoku Cloud is a five-line Japanese trend indicator that displays support, resistance, momentum, and trend direction in a single overlay, with the shaded 'kumo' acting as forward-projected support or resistance.
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What is the Stochastic Oscillator? Definition, Formula, and Example
The stochastic oscillator is a 0-to-100 momentum indicator that measures where the current close sits within a recent high-low range, with readings above 80 marking overbought and below 20 marking oversold conditions.
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Market Pulse — April 23, 2026
Software earnings misses and a renewed oil spike pulled the S&P back from record highs as Utilities led a defensive rotation.
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What is a Credit Spread? Definition, Formula, and Example
A credit spread is a defined-risk options strategy that collects net premium upfront by simultaneously selling and buying options of the same expiration and type at different strikes.
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What is a Limit Order? Definition, Formula, and Example
A limit order is an instruction to buy or sell a security only at a specified price or better, guaranteeing price but not execution.
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What is Backwardation? Definition, Formula, and Example
Backwardation is a futures market condition where front-month contracts trade at a higher price than deferred contracts, signaling tight near-term supply or strong immediate demand.
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What is the Advance-Decline Line? Definition, Formula, and Example
The Advance-Decline Line (A/D Line) is a cumulative market breadth indicator that tracks the running difference between advancing and declining stocks on an exchange to confirm or contradict index-level trends.
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What is Relative Volume (RVOL)? Definition, Formula, and Example
Relative Volume (RVOL) is a ratio comparing a stock's current traded volume to its average volume over a lookback period, quantifying unusual activity as a multiple of normal.
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Market Pulse — April 22, 2026
S&P 500 and Nasdaq printed fresh records as Trump's extended Iran ceasefire lifted risk appetite ahead of Tesla's after-hours print.
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What is a Death Cross? Definition, Formula, and Example
A death cross is a bearish technical pattern formed when a security's 50-day simple moving average crosses below its 200-day moving average, signaling potential long-term weakness.
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What is Contango? Definition, Formula, and Example
Contango is a futures market structure where longer-dated contracts trade above nearer-dated contracts and spot prices, creating systematic losses for long holders as contracts are rolled forward.
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What is Options Vega? Definition, Formula, and Example
Vega measures the dollar change in an option's price for a one percentage-point change in implied volatility, making it the primary risk metric for volatility traders.
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What is the Bid-Ask Spread? Definition, Formula, and Example
The bid-ask spread is the difference between the highest price buyers will pay and the lowest price sellers will accept, representing the implicit transaction cost of trading and the primary measure of market liquidity.
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What is the Put-Call Ratio? Definition, Formula, and Example
The put-call ratio divides put option volume by call option volume to gauge market sentiment, with extreme readings often used as contrarian signals.
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Market Pulse — April 21, 2026
Stocks slipped across the board as US-Iran ceasefire anxiety and a rising 10-year yield overshadowed a blowout UnitedHealth print.
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What is a Butterfly Spread? Definition, Formula, and Example
A butterfly spread is a four-leg, three-strike options strategy that profits when the underlying pins near the middle strike at expiration, producing a limited-risk, limited-reward payoff tent.
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What is a Doji? Definition, Formula, and Example
A doji is a candlestick pattern where the open and close prices are virtually equal, producing a cross or plus shape that signals indecision between buyers and sellers.
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What is the Sharpe Ratio? Definition, Formula, and Example
The Sharpe ratio measures risk-adjusted return by dividing a portfolio's excess return over the risk-free rate by its volatility, expressed as a single number where higher is better.
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What is the Wash Sale Rule? Definition, Formula, and Example
The wash sale rule is an IRS regulation that disallows claiming a capital loss if you buy the same or substantially identical security within 30 days before or after selling it at a loss.
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What is Triple Witching? Definition, Formula, and Example
Triple witching is the simultaneous expiration of stock index futures, stock index options, and single-stock options that occurs on the third Friday of March, June, September, and December, producing sharply elevated volume and volatility.
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Market Pulse — April 20, 2026
A tech-led slide snaps the Nasdaq's 13-day win streak as Iran tensions flare again, but small caps close higher and the Dow finishes flat.
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What is a Moving Average? Definition, Formula, and Example
A moving average smooths price data by averaging closes over a rolling window of N bars, producing a lagging trend line that filters noise and defines the prevailing direction.
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What is a Stop-Loss Order? Definition, Formula, and Example
A stop-loss order is a standing broker instruction that automatically sells (or buys, for shorts) a security once its price crosses a preset trigger, capping downside without requiring the trader to watch the tape.
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What is a Straddle? Definition, Formula, and Example
A long straddle buys an at-the-money call and put with the same strike and expiration, profiting when the underlying moves sharply in either direction by more than the combined premium paid.
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What is Beta? Definition, Formula, and Example
Beta is a statistical measure of a security's price sensitivity to broad-market moves, computed as the covariance of the security's returns with the market's returns divided by the market's variance.
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What is Open Interest? Definition, Formula, and Example
Open interest is the total number of options or futures contracts currently outstanding — not yet closed, exercised, or expired — reported by exchanges once per day after market close.
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What is a Covered Call? Definition, Formula, and Example
A covered call is an options strategy where you sell one call option against 100 shares you already own, collecting premium in exchange for capping your upside at the strike price.
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What is a Golden Cross? Definition, Formula, and Example
A golden cross occurs when a stock's 50-day moving average crosses above its 200-day moving average — a long-term bullish momentum signal.
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What is an Iron Condor? Definition, Formula, and Example
An iron condor is a four-leg, defined-risk options strategy that profits when the underlying stays between two short strikes through expiration.
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What is Average True Range (ATR)? Definition, Formula, and Example
Average True Range (ATR) is a volatility indicator that measures the average price range of an asset over a set period, quantifying how much it moves each session regardless of direction.
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What is Fibonacci Retracement? Definition, Formula, and Example
Fibonacci retracement is a technical analysis tool that draws horizontal support and resistance levels at ratios derived from the Fibonacci sequence — 23.6%, 38.2%, 61.8%, and 78.6% — across a defined price swing.
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What is Options Gamma? Definition, Formula, and Example
Options gamma is the rate of change of an option's delta for a one-dollar move in the underlying — the second derivative of option price with respect to price.
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What is Options Theta? Definition, Formula, and Example
Options theta (Θ) is the daily dollar amount an option loses in value from time decay alone, expressed as a negative number for long options and a positive number for short options.
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What is Payment for Order Flow? Definition, Formula, and Example
Payment for order flow is the rebate a retail broker receives from a wholesale market maker for routing its customer orders to that market maker for execution.
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What is Short Interest? Definition, Formula, and Example
Short interest is the total number of shares of a stock that have been sold short but not yet covered, reported as a raw count and as a percentage of public float.
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What is the Yield Curve? Definition, Formula, and Example
The yield curve is a graph of U.S. Treasury yields plotted against their maturities from 3 months to 30 years, with its slope — normal, flat, or inverted — serving as a leading indicator of economic expectations and Fed policy direction.
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What is a Dark Pool? Definition, Formula, and Example
A dark pool is a private, off-exchange trading venue where institutional investors execute large block orders anonymously, with trade details reported to the public tape only after execution rather than displayed in the pre-trade order book.
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What is a Gamma Squeeze? Definition, Formula, and Example
A gamma squeeze is a self-reinforcing upward price spike caused when options market makers are forced to continuously buy the underlying stock to delta-hedge short call positions as price rises, with each purchase further increasing the price and triggering additional required hedging.
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What is a Short Squeeze? Definition, Formula, and Example
A short squeeze is a rapid, self-reinforcing price spike in a heavily shorted security caused by short sellers being forced to buy back shares to cover losses, with each round of buying pushing the price higher and triggering more forced covering.
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What is Bollinger Bands? Definition, Formula, and Example
Bollinger Bands are a volatility indicator consisting of a 20-period simple moving average flanked by upper and lower bands set two standard deviations above and below it, widening during high-volatility periods and contracting during low-volatility ones.
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What is Implied Volatility? Definition, Formula, and Example
Implied volatility (IV) is the market's forward-looking estimate of a security's price movement, expressed as an annualized standard deviation percentage, derived by solving backward from an option's current market price using an options pricing model.
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What is MACD? Definition, Formula, and Example
MACD (Moving Average Convergence Divergence) is a trend-following momentum indicator built from the difference between a 12-period and 26-period exponential moving average, with a 9-period signal line and a histogram showing the gap between the two.
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What is Options Delta? Definition, Formula, and Example
Options delta is the rate of change of an option's price for a $1 move in the underlying asset, ranging from 0 to 1 for calls and −1 to 0 for puts, and is also used as a proxy for the probability that the option expires in the money.
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What is RSI? Definition, Formula, and Example
RSI (Relative Strength Index) is a momentum oscillator that measures the speed and magnitude of recent price changes on a 0–100 scale, signaling overbought conditions above 70 and oversold conditions below 30.
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What is the VIX? Definition, Formula, and Example
The VIX is the CBOE Volatility Index, a real-time measure of the market's 30-day implied volatility expectation for the S&P 500, derived from SPX option prices and expressed as an annualized percentage.
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What is VWAP? Definition, Formula, and Example
VWAP (Volume Weighted Average Price) is the ratio of cumulative dollar volume traded to cumulative share volume over a session, giving the average price at which every share exchanged hands weighted by transaction size, and serving as the primary execution benchmark for institutional traders.
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Market Pulse — April 17, 2026
Stocks ripped higher and oil cratered after Iran said the Strait of Hormuz was 'completely open,' sending the S&P 500 to a record close above 7,100.
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Weekly Recap — Week of April 13–17, 2026
Stocks posted their best week since May 2025 as an Israel-Iran ceasefire and a reopened Strait of Hormuz collapsed the war premium and sent oil down nearly 9%.
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Why we built Tapeboard
Bloomberg costs $24k/year. Traders end up juggling six browser tabs for free. Tapeboard is the version we wanted to use.
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Stock Market Today: April 16, 2026 — Records Extend on TSMC, Crude Surge
S&P 500 and Nasdaq closed at fresh records on April 16, 2026 as TSMC's blowout AI-chip quarter and a 3.7% pop in WTI crude lifted tech and energy, even as the 10-year Treasury yield climbed to 4.311% on hot Philly Fed and softer jobless claims.
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Stock Market Today: April 15, 2026 — S&P 500 Closes Above 7,000 for First Time
The S&P 500 booked its first-ever close above 7,000 as a sliding crude tape and an 11th-straight Nasdaq up day extended the post-ceasefire rally.
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Stock Market Today: April 14, 2026 — Soft PPI Lifts Tech, Crude Cracks
A cooler-than-expected March PPI print and a sharp slide in crude on U.S.–Iran peace-talk optimism powered a tech-led rally, with the Nasdaq adding 1.2% as big-bank earnings opened Q1 reporting season.
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Stock Market Today: April 13, 2026 — Software Snapback Outmuscles Hormuz Blockade
U.S. stocks closed firmly higher Monday — S&P 500 +1.02% to 6,886.24 — as a Goldman Sachs software call and Iran de-escalation hopes overpowered an overnight oil spike triggered by Washington's Strait of Hormuz blockade order.