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.
On May 13, 2026, Enveric Biosciences (ENVB) sits atop the Tapeboard most-shorted leaderboard with a maximum squeeze score of 100, a 445.3% annualized borrow fee, 45.7% short interest as a share of float, and 47.9% float utilization. The broader board skews toward small- and mid-cap biotech, clean-energy, and consumer-cyclical names — 21 of today's top 25 are flagged on the FINRA threshold list, and four names show days to cover above 15.
May 13, 2026 Top 25 Short Squeeze Candidates
| Rank | Symbol | Squeeze Score | SI % Float | Borrow Fee | Days to Cover | T |
|---|---|---|---|---|---|---|
| 1 | ENVB | 100.0 | 45.7% | 445.3% | 0.1 | T |
| 2 | GRPN | 80.5 | 59.2% | 1.0% | 6.7 | T |
| 4 | CLSK | 63.9 | 49.5% | 0.3% | 4.5 | T |
| 5 | RXRX | 60.4 | 34.2% | 1.0% | 15.0 | T |
| 6 | NVAX | 59.2 | 30.3% | 0.4% | 15.6 | |
| 7 | EVGO | 57.9 | 33.5% | 0.6% | 11.9 | T |
| 8 | IBRX | 57.9 | 35.6% | 3.9% | 9.3 | T |
| 10 | NTLA | 57.6 | 39.3% | 0.4% | 6.8 | |
| 11 | BTDR | 57.5 | 34.7% | 0.8% | 8.2 | |
| 12 | INDI | 54.7 | 29.4% | 3.6% | 13.4 | T |
| 13 | RH | 54.3 | 38.1% | 0.4% | 3.1 | T |
| 14 | AI | 54.3 | 33.1% | 0.4% | 9.2 | T |
| 15 | CSIQ | 53.9 | 31.4% | 0.8% | 6.7 | T |
| 16 | ARCT | 53.1 | 28.2% | 0.6% | 15.5 | T |
| 17 | PLAY | 52.9 | 34.0% | 0.4% | 4.5 | T |
| 18 | LCID | 52.8 | 35.8% | 8.2% | 3.0 | T |
| 19 | H | 52.8 | 39.1% | 0.5% | 9.0 | T |
| 20 | PCRX | 52.1 | 28.6% | 0.4% | 14.9 | T |
| 21 | UPST | 52.0 | 32.3% | 0.4% | 6.2 | T |
| 23 | TRIP | 51.0 | 31.9% | 0.4% | 9.1 | T |
| 24 | BEAM | 50.7 | 31.5% | 0.3% | 9.7 | T |
| 25 | PRME | 50.6 | 21.5% | 0.4% | 16.4 | T |
| 26 | TWST | 49.8 | 28.7% | 0.3% | 11.0 | |
| 27 | CRSP | 49.6 | 26.7% | 0.4% | 12.9 | T |
| 28 | TGTX | 49.6 | 25.5% | 0.3% | 14.9 | T |
Top 5 Names by Squeeze Score
1. ENVB — Squeeze Score 100
ENVB is the textbook hard-to-borrow microcap setup: 45.7% short interest on a thin float, 47.9% float utilization, and an annualized borrow fee of 445.3% — meaning shorts are paying more than four times the share price per year just to hold the position. Days to cover is only 0.09 because daily volume swamps the size of the short book, but that cuts both ways: the float is so small and so utilized that any forced unwind has nowhere to source borrow from. Price has bled 23.3% over the last five sessions to $2.47, which is keeping shorts in the trade — but if borrow tightens further or a covering wave hits a thin tape, the cost of staying short becomes uneconomical fast.
2. GRPN — Squeeze Score 80.5
GRPN is the cleanest "crowded short into strength" setup on today's board: 59.2% of the float is sold short, 51.8% float utilization, and the stock has rallied 16.0% over the last five days to $18.60. The borrow fee is still cheap at 0.99%, which tells you supply hasn't broken yet — but with 6.65 days to cover and a FINRA threshold flag, every percent higher pushes more shorts underwater. A continued bid that drives borrow availability lower would be the mechanical trigger to watch.
4. CLSK — Squeeze Score 63.9
CLSK carries a 49.5% short interest into a 36.4% float-utilized name at $13.35, with 4.48 days to cover and a 0.31% borrow fee. Five-day momentum is -8.3%, so shorts are currently in the money and there is no urgency to cover. This is a "loaded spring" setup rather than an imminent short squeeze: the short interest and threshold flag are squeeze-grade, but a catalyst — a bitcoin-correlated bid, a covering rotation through mining names — would have to do the work to ignite it.
5. RXRX — Squeeze Score 60.4
RXRX shows 34.2% short interest, 33.4% float utilization, and an outsized 15.03 days to cover at $3.07. Borrow is still cheap (0.96%) and momentum is -11.1% over five sessions, which means shorts are comfortable. The squeeze mechanic here is the cover math: with daily volume that thin relative to the short book, even a modest positive surprise forces shorts to chase across many sessions rather than exit in one print.
6. NVAX — Squeeze Score 59.2
NVAX ranks just outside the top five but is structurally similar to RXRX: 30.3% short interest, 35.0% float utilization, 15.57 days to cover at $9.25, and a tame 0.45% borrow fee. NVAX is notably not on the FINRA threshold list today, so daily short-volume pressure has eased even though the resting short book is still heavy. A positive clinical or commercial print would meet a very slow-to-cover float — the mechanical setup for a multi-day grind higher rather than a one-session pop.
Highest Borrow Fees on May 13, 2026
ENVB dominates the borrow cost stack at 445.3%, an order of magnitude above anything else on the board. The next tier is LCID at 8.2%, IBRX at 3.9%, and INDI at 3.6%. Everything else on today's top 25 borrows for under 1% annualized, which means the squeeze pressure on those names is coming from short interest and float utilization rather than from cost-of-carry pain.
Stocks Flagged on the FINRA Threshold List
Twenty-one of today's top 25 carry the "T" flag — including the entire top 5. The T flag means a symbol shows sustained heavy short pressure on the FINRA Consolidated NMS daily short-volume file: more than 50% of recent reported volume was executed on the short side within the last seven trading days. It is the cleanest proxy for active, daily short-side participation, separate from the bi-monthly resting short interest report. Full scoring detail lives at /methodology/short-squeeze-score.
How the Tapeboard Squeeze Score Is Built
The 0-100 score is a weighted composite: 35% short interest as a percent of float (Yahoo Finance), 25% borrow fee (IBKR via iborrowdesk), 20% float utilization, 15% days to cover, and 5% 5-day momentum (Schwab). The weights bias the score toward the slow-moving structural variables — supply, cost, and crowding — rather than chasing day-to-day price. Methodology and refresh cadence are documented at /methodology/short-squeeze-score.
Tomorrow's ranking is published before the U.S. open at the live leaderboard.