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.
ENVB holds the top of Tapeboard's most-shorted-stocks board on May 19, 2026 with a perfect 100 squeeze score, anchored by an outlier 260.1% annualized borrow fee against 45.7% short interest and just 0.1 days to cover. Twenty of the top 25 names carry the FINRA threshold flag for sustained heavy short-side volume, and eight tickers — led by GRPN (59.2%) and RH (55.8%) — show short interest above 35% of float. Outside the ENVB outlier, fees remain mostly tame, so today's pressure is dominated by crowded positioning rather than stock-loan stress.
May 19, 2026 Top 25 Short Squeeze Candidates
| Rank | Symbol | Squeeze Score | SI % Float | Borrow Fee | Days to Cover | T |
|---|---|---|---|---|---|---|
| 1 | ENVB | 100 | 45.7% | 260.1% | 0.1 | |
| 2 | GRPN | 94.2 | 59.2% | 1.1% | 6.7 | T |
| 4 | RH | 81 | 55.8% | 0.4% | 3.2 | T |
| 5 | CLSK | 78.4 | 49.5% | 0.3% | 4.5 | T |
| 6 | RXRX | 72.4 | 34.2% | 0.9% | 15.0 | T |
| 7 | NVAX | 72.1 | 30.3% | 0.4% | 15.6 | T |
| 8 | BTDR | 70.2 | 34.7% | 0.8% | 8.2 | T |
| 9 | NTLA | 70.1 | 39.3% | 0.4% | 6.8 | T |
| 11 | AI | 69.2 | 35.2% | 0.4% | 10.2 | |
| 12 | IBRX | 69.1 | 35.6% | 6.2% | 9.3 | T |
| 13 | EVGO | 68.5 | 33.5% | 0.7% | 11.9 | T |
| 14 | PLAY | 65.2 | 34.0% | 0.5% | 4.5 | |
| 15 | INDI | 65.2 | 29.4% | 2.9% | 13.4 | T |
| 16 | PCRX | 65.1 | 28.6% | 0.4% | 14.9 | T |
| 18 | LCID | 63.5 | 35.8% | 10.7% | 3.0 | T |
| 19 | CSIQ | 63.5 | 31.4% | 0.9% | 6.7 | T |
| 20 | ARCT | 63.5 | 28.2% | 0.5% | 15.5 | T |
| 21 | TRIP | 62.7 | 31.9% | 0.4% | 9.1 | T |
| 22 | UPST | 62.1 | 32.3% | 0.4% | 6.2 | T |
| 23 | BEAM | 60.9 | 31.5% | 0.3% | 9.7 | T |
| 24 | PRME | 60.7 | 21.5% | 0.4% | 16.4 | T |
| 25 | CRSP | 60.2 | 26.7% | 0.5% | 12.9 | T |
| 26 | ASAN | 59.9 | 30.9% | 0.5% | 4.5 | T |
| 27 | TGTX | 59.5 | 25.5% | 0.3% | 14.9 | |
| 28 | IOVA | 59.5 | 27.5% | 0.4% | 8.1 |
Top 5 Short Squeeze Setups for May 19, 2026
1. ENVB — Squeeze Score 100
ENVB prints a 260.1% annualized borrow fee — the only triple-digit fee on the leaderboard — against 45.7% short interest, 0.1 days to cover, and float utilization of 24.6%. The stock closed at $2.21 and is down 3.1% over the last five sessions. This is a tight-float biotech in acute stock-loan stress: with a sub-day coverage runway, the daily volume base cannot absorb a forced cover without shorts bidding for stock outright. ENVB is not on the FINRA threshold list today, so the pressure lives in the borrow market rather than in tape-side short volume. If borrow availability tightens further or a single block buyer arrives, there is no supply cushion to dampen the move.
2. GRPN — Squeeze Score 94.2
GRPN holds the highest raw short interest on the board at 59.2% of float, with float utilization at 57.1% — more than half of stock-loan inventory is already on loan. Borrow fee remains modest at 1.1%, days to cover sits at 6.7, five-day momentum is +6.2%, and price closed at $17.80. Threshold-flagged. The setup is a crowded short on a name already grinding higher: short interest is structurally elevated and the borrow desk is approaching its supply ceiling. If utilization breaks into the 70-80% band, fee rates can reprice in a single session, and that fee move itself becomes a forcing function for the fee-sensitive part of the short book.
4. RH — Squeeze Score 81
RH is the rare mid-cap consumer name on the leaderboard, trading at $139 with +8.8% momentum over five sessions. Short interest is 55.8% of float, days to cover 3.2, borrow fee just 0.4%, threshold-flagged. The pattern is unusual: a heavily-shorted name where stock-loan remains cheap and available, but bears face a tape working against them. With only 3.2 days of coverage at recent volume, a gap-up open compresses that window quickly, and the dollar size of the short book means cover orders here move the print rather than getting absorbed by retail flow.
5. CLSK — Squeeze Score 78.4
CLSK carries 49.5% short interest, 4.5 days to cover, and the strongest five-session momentum in the top ten at +12.7%. Borrow fee is cheap at 0.3%, price $15.83, threshold-flagged. The squeeze mechanic is momentum-driven: shorts are already underwater on a name trending higher, and float utilization of 40.4% still leaves headroom for additional borrow — until the fee resets. Bitcoin-correlated miners tend to re-rate quickly when spot moves, and the stock-loan desk typically follows; a sustained leg up in the underlying pulls fees up within days, which then forces the marginal short.
6. RXRX — Squeeze Score 72.4
RXRX shows a different profile — moderate short interest at 34.2%, but 15.0 days to cover, the second-highest figure in the top ten. Borrow fee is 0.9%, momentum +2.3%, price $3.11, threshold-flagged. The 15-day coverage runway is the operative number here: any forced-in buying meets a structurally thin daily seller base, which is exactly the condition under which covering itself becomes the dominant volume on the print. The data does not predict a catalyst; it describes the mechanics if one arrives.
Stocks Flagged on the FINRA Threshold List
The "T" column marks names that appear on the FINRA Consolidated NMS daily short-volume file with sustained heavy short pressure — specifically, short-side volume exceeding 50% of total volume within the last seven trading days. Twenty of the top 25 today carry the flag, which means the short-side pressure on this leaderboard is broad rather than isolated to a handful of high-fee names. See /methodology/short-squeeze-score for how the threshold input is weighted alongside borrow and float data.
How the Tapeboard Squeeze Score Is Built
The Tapeboard short squeeze score blends five inputs: short interest as a percent of float (35%, sourced from Yahoo), annualized borrow fee (25%, IBKR via iborrowdesk), float utilization (20%), days to cover (15%), and trailing five-day price momentum (5%, Schwab). The output is a 0-100 ranking that surfaces names where multiple short-side pressures stack, rather than relying on any single metric. Full weighting and edge-case handling are documented at /methodology/short-squeeze-score.
The live leaderboard refreshes intraday and reranks tomorrow with the next FINRA short-volume file.