Most Shorted Stocks Today: October 7, 2026 — Top 25 Squeeze Candidates
On October 7, 2026, FCEL leads the most shorted stocks board with a 98.5 squeeze score, 32.7% short interest, and a 41.4% borrow fee, on a day where 21 of 25 names sit on the FINRA threshold list.
FuelCell Energy (FCEL) tops the most shorted stocks leaderboard on October 7, 2026, with a squeeze score of 98.5, short interest of 32.7% of float, a 41.4% borrow fee, and 4.1 days to cover. The board is defined by threshold concentration today: 21 of 25 names carry the T flag, and borrow costs are elevated across the list, capped by BIRD at an extreme 1,299.4% annualized fee. The top five is entirely new versus the previous record, led by FCEL, TWST, RXRX, PRME, and SDGR.
October 7, 2026 Top 25 Short Squeeze Candidates
| Rank | Symbol | Squeeze Score | SI % Float | Borrow Fee | Days to Cover | T |
|---|---|---|---|---|---|---|
| 1 | FCEL | 98.5 | 32.7% | 41.4% | 4.1 | T |
| 2 | TWST | 97.6 | 22.6% | 25.9% | 4.2 | T |
| 3 | RXRX | 95.0 | 34.8% | 58.8% | 6.5 | T |
| 4 | PRME | 94.7 | 27.9% | 41.9% | 7.6 | T |
| 5 | SDGR | 93.2 | 19.4% | 26.1% | 3.4 | T |
| 6 | HUT | 89.0 | 16.2% | 25.0% | 3.5 | T |
| 7 | CIFR | 83.1 | 21.2% | 38.0% | 2.1 | |
| 8 | SMR | 81.8 | 22.4% | 46.9% | 2.0 | T |
| 9 | LEU | 80.0 | 28.2% | 50.8% | 6.8 | T |
| 10 | OKLO | 80.0 | 22.5% | 47.8% | 3.2 | T |
| 11 | GENI | 79.8 | 17.8% | 41.4% | 4.6 | T |
| 12 | NBIS | 78.9 | 20.5% | 31.3% | 3.0 | T |
| 13 | NVAX | 78.5 | 35.0% | 42.1% | 6.8 | T |
| 14 | CHPT | 78.2 | 21.6% | 372.6% | 4.0 | T |
| 15 | WULF | 78.0 | 31.7% | 35.4% | 4.3 | T |
| 16 | AGEN | 76.9 | 16.9% | 51.1% | 5.8 | T |
| 18 | TE | 75.4 | 34.0% | 186.8% | 3.6 | |
| 19 | IBRX | 74.5 | 30.8% | 52.0% | 8.8 | T |
| 20 | CRBP | 72.5 | 20.8% | 41.6% | 1.9 | T |
| 21 | BIRD | 70.3 | 15.8% | 1299.4% | 2.1 | T |
| 22 | CLSK | 69.4 | 31.9% | 31.7% | 4.6 | T |
| 23 | IREN | 69.2 | 24.0% | 46.6% | 2.3 | |
| 24 | VKTX | 69.0 | 19.9% | 42.5% | 2.6 | |
| 25 | ARCT | 68.3 | 20.9% | 41.4% | 6.6 | T |
| 26 | BTDR | 67.0 | 34.3% | 33.3% | 5.7 |
Highest Borrow Fees on October 7, 2026
1. FCEL — Squeeze Score 98.5
FCEL leads the board with short interest at 32.7% of float, a 41.4% borrow fee, 4.1 days to cover, and a T flag on the FINRA threshold file. Its 5-day momentum of +11.8% means shorts are already underwater on the week, which raises the cost of holding the position. This is a classic high-SI, threshold-flagged setup: if a positive catalyst forces covering, 4.1 days of volume stands between current price and a cleared short book.
2. TWST — Squeeze Score 97.6
TWST scores 97.6 on 22.6% short interest, a 25.9% borrow fee, and 4.2 days to cover, with the threshold flag set. The twist is momentum: the stock is down 19.5% over five days, so shorts are winning and have less pressure to exit. A squeeze here would need a sharp reversal that traps late shorts who added into the decline; if borrow availability tightens further at a $155.01 share price, margin math gets uncomfortable quickly.
3. RXRX — Squeeze Score 95.0
RXRX combines the second-highest short interest in the top five at 34.8% of float with a steep 58.8% borrow fee and 6.5 days to cover. At $4.27, this is a high-fee, tight-float small cap where carrying a short position costs roughly 0.16% per day in borrow alone. The setup squeezes if any forced covering begins, because 6.5 days of volume means exits are slow and crowded.
4. PRME — Squeeze Score 94.7
PRME posts 27.9% short interest, a 41.9% borrow fee, and the longest days-to-cover in the top five at 7.6. Five-day momentum of +27.7% at $3.90 means shorts are deep underwater and paying a heavy fee for the privilege. This is the most mechanically pressured name on the board: rising price, rising cost, slow exit. Traders reviewing how similar setups played out in their own history sometimes journal the pattern, and our TradeZella comparison covers tools built for that.
5. SDGR — Squeeze Score 93.2
SDGR rounds out the top five at 19.4% short interest, a 26.1% borrow fee, and 3.4 days to cover, with the T flag set. Momentum is negative at -12.1% over five days, so this is a threshold-flagged name where shorts currently have the upper hand. The squeeze case rests on the fee and the flag: sustained short-side volume above 50% plus a 26.1% annualized carry cost means any upside surprise forces rapid repositioning.
Stocks Flagged on the FINRA Threshold List
The T flag marks symbols showing sustained heavy short pressure on the FINRA Consolidated NMS daily short-volume file, meaning more than 50% of recent volume was short-side within the last 7 trading days. Twenty-one of today's 25 names carry the flag, an unusually dense reading. See /methodology/short-squeeze-score for the full scoring breakdown.
How the Squeeze Score Is Built
The short squeeze score weights five inputs: 35% SI%Float (FINRA), 25% Borrow Fee, 20% float utilization, 15% Days to Cover, and 5% 5-day momentum. Underlying data comes from FINRA and SEC filings. Full methodology: /methodology/short-squeeze-score.
What Changed vs the Previous Record
TWST enters the top 5 at rank 2 (score 97.6), new to the leader board. RXRX enters the top 5 at rank 3 (score 95.0), new to the leader board. PRME enters the top 5 at rank 4 (score 94.7), new to the leader board. SDGR enters the top 5 at rank 5 (score 93.2), new to the leader board.
For current rankings, see the live leaderboard and the full daily archive.