FULC · Fulcrum Therapeutics, Inc.
$3.68
+0.06 (+1.66%)
At close · Jul 21
Market Cap
$246.54M
Shares
66.63M
Total shares sold short and not yet covered, reported to FINRA by broker-dealers and published twice a month (bi-monthly). Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.
Short Squeeze Score
55/100
Short interest 9.6% of shares — P88
Days to cover 1.5 — P37
Price vs VWAP -6.4% — P34
Short-volume trend -23.6% — P5
Short interest change +16.3% — P74
Worst FTD 0.19% of shares — P82
Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-06-30). Weighted mean of the available factors (short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, fails-to-deliver 10%) plus catalyst boosts (price spike, volume surge, earnings within days), capped at +20 and clamped to 100.
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 2026-06-30 | 6,425,180 | 5,524,373 | +900,807 | 1.48 |
| 2026-06-15 | 5,524,373 | 7,994,430 | -2,470,057 | 1.00 |
| 2026-05-29 | 7,994,430 | 7,799,579 | +194,851 | 19.81 |
| 2026-05-15 | 7,799,579 | 7,967,121 | -167,542 | 13.58 |
| 2026-04-30 | 7,967,121 | 7,553,337 | +413,784 | 9.31 |
| 2026-04-15 | 7,553,337 | 6,962,035 | +591,302 | 9.63 |
| 2026-03-31 | 6,962,035 | 4,932,604 | +2,029,431 | 4.64 |
| 2026-03-13 | 4,932,604 | 4,210,945 | +721,659 | 4.10 |
| 2026-02-27 | 4,210,945 | 3,518,354 | +692,591 | 3.81 |
| 2026-02-13 | 3,518,354 | 3,872,332 | -353,978 | 7.51 |
| 2026-01-30 | 3,872,332 | 3,588,926 | +283,406 | 5.16 |
| 2026-01-15 | 3,588,926 | 3,268,648 | +320,278 | 4.57 |
| 2025-12-31 | 3,268,648 | 2,994,328 | +274,320 | 3.78 |
| 2025-12-15 | 2,994,328 | 3,806,493 | -812,165 | 1.00 |
| 2025-11-28 | 3,806,493 | 3,564,671 | +241,822 | 3.94 |
| 2025-11-14 | 3,564,671 | 3,525,229 | +39,442 | 5.76 |
| 2025-10-31 | 3,525,229 | 3,550,355 | -25,126 | 5.16 |
| 2025-10-15 | 3,550,355 | 3,349,875 | +200,480 | 7.84 |
| 2025-09-30 | 3,349,875 | 3,687,485 | -337,610 | 5.43 |
| 2025-09-15 | 3,687,485 | 3,721,073 | -33,588 | 9.10 |
| 2025-08-29 | 3,721,073 | 5,823,141 | -2,102,068 | 9.38 |
| 2025-08-15 | 5,823,141 | 5,020,641 | +802,500 | 9.68 |
| 2025-07-31 | 5,020,641 | 4,917,362 | +103,279 | 4.31 |
Showing 1–23 of 23 settlements
Key facts
CIK
1680581
CUSIP
359616109
13F (30d)
16 filings
16 filers
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