SPRO
Spero Therapeutics, Inc.Company with tickers: SPRO
CIK
1701108
CUSIP
84833T103
Shares Outstanding
57,901,493
Price History
Institutional Holders
Short Volume
Short Interest
Fails to Deliver
SEC Filings
Earnings Calls
Insider Trades
Congressional Trades
Short Volume (Last 90 Days)
| Date | Short Volume | Short Exempt | Total Volume | Short % |
|---|---|---|---|---|
| 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% |