SPRO
Spero Therapeutics, Inc.Company with tickers: SPRO
CIK
1701108
CUSIP
84833T103
Shares Outstanding
57,901,493
13F Activity (30d)
45 filings
45 filers
Short Volume (Last 90 Days)
| Date | Short Volume | Short Exempt | Total Volume | Short % |
|---|---|---|---|---|
| 2026-05-27 | 160,405 | 0 | 654,518 | 24.5% |
| 2026-05-26 | 175,921 | 0 | 719,220 | 24.5% |
| 2026-05-22 | 50,411 | 340 | 289,722 | 17.4% |
| 2026-05-21 | 58,158 | 420 | 223,264 | 26.0% |
| 2026-05-20 | 55,593 | 0 | 156,162 | 35.6% |
| 2026-05-19 | 71,530 | 0 | 147,344 | 48.5% |
| 2026-05-18 | 106,797 | 827 | 272,011 | 39.3% |
| 2026-05-15 | 118,913 | 0 | 489,592 | 24.3% |
| 2026-05-14 | 320,376 | 2,245 | 598,608 | 53.5% |
| 2026-05-13 | 178,987 | 556 | 363,015 | 49.3% |
| 2026-05-12 | 129,418 | 600 | 180,287 | 71.8% |
| 2026-05-11 | 102,973 | 0 | 216,994 | 47.5% |
| 2026-05-08 | 89,510 | 0 | 181,894 | 49.2% |
| 2026-05-07 | 136,047 | 0 | 271,343 | 50.1% |
| 2026-05-06 | 170,613 | 7,564 | 263,740 | 64.7% |
| 2026-05-05 | 64,719 | 0 | 207,060 | 31.3% |
| 2026-05-04 | 80,143 | 16,672 | 190,999 | 42.0% |
| 2026-05-01 | 57,269 | 0 | 202,951 | 28.2% |
| 2026-04-30 | 53,551 | 0 | 210,469 | 25.4% |
| 2026-04-29 | 98,455 | 4,500 | 333,754 | 29.5% |
| 2026-04-28 | 43,010 | 0 | 99,471 | 43.2% |
| 2026-04-27 | 55,000 | 0 | 148,380 | 37.1% |
| 2026-04-24 | 76,610 | 685 | 183,119 | 41.8% |
| 2026-04-23 | 48,583 | 2,000 | 147,189 | 33.0% |
| 2026-04-22 | 41,035 | 0 | 148,589 | 27.6% |
| 2026-04-21 | 48,766 | 6,000 | 126,928 | 38.4% |
| 2026-04-20 | 83,370 | 0 | 220,093 | 37.9% |
| 2026-04-17 | 52,252 | 79 | 214,498 | 24.4% |
| 2026-04-16 | 54,532 | 0 | 211,243 | 25.8% |
| 2026-04-15 | 118,221 | 0 | 350,056 | 33.8% |
| 2026-04-14 | 73,361 | 1,500 | 179,070 | 41.0% |
| 2026-04-13 | 107,524 | 0 | 248,875 | 43.2% |
| 2026-04-10 | 207,834 | 18,461 | 331,358 | 62.7% |
| 2026-04-09 | 84,507 | 0 | 266,670 | 31.7% |
| 2026-04-08 | 90,676 | 89 | 221,372 | 41.0% |
| 2026-04-07 | 121,569 | 299 | 351,573 | 34.6% |
| 2026-04-06 | 25,719 | 0 | 169,260 | 15.2% |