ALT
Altimmune, Inc.Company with tickers: ALT
CIK
1326190
CUSIP
02155H200
Shares Outstanding
194,474,154
Price History
Institutional Holders
Short Volume
Short Interest
Fails to Deliver
Financials
SEC Filings
Earnings Calls
Insider Trades
Congressional Trades
Short Volume (Last 90 Days)
| Date | Short Volume | Short Exempt | Total Volume | Short % |
|---|---|---|---|---|
| 2026-05-22 | 350,212 | 0 | 966,513 | 36.2% |
| 2026-05-21 | 463,799 | 3,607 | 1,830,184 | 25.3% |
| 2026-05-20 | 342,536 | 60 | 1,035,932 | 33.1% |
| 2026-05-19 | 521,428 | 1,107 | 1,218,061 | 42.8% |
| 2026-05-18 | 655,420 | 141 | 1,839,766 | 35.6% |
| 2026-05-15 | 506,634 | 1,064 | 1,276,818 | 39.7% |
| 2026-05-14 | 565,442 | 20,974 | 1,389,400 | 40.7% |
| 2026-05-13 | 670,438 | 2,524 | 1,638,919 | 40.9% |
| 2026-05-12 | 440,682 | 2 | 1,208,815 | 36.5% |
| 2026-05-11 | 758,328 | 12,652 | 1,486,828 | 51.0% |
| 2026-05-08 | 658,801 | 23 | 1,482,035 | 44.5% |
| 2026-05-07 | 994,315 | 3,800 | 1,929,282 | 51.5% |
| 2026-05-06 | 886,297 | 6,584 | 2,148,179 | 41.3% |
| 2026-05-05 | 797,859 | 6,000 | 1,758,615 | 45.4% |
| 2026-05-04 | 917,395 | 100 | 2,592,654 | 35.4% |
| 2026-05-01 | 1,027,293 | 0 | 2,324,489 | 44.2% |
| 2026-04-30 | 1,905,072 | 0 | 3,436,496 | 55.4% |
| 2026-04-29 | 1,616,710 | 8,346 | 2,546,964 | 63.5% |
| 2026-04-28 | 1,252,806 | 544 | 2,277,845 | 55.0% |
| 2026-04-27 | 1,764,406 | 161 | 3,018,995 | 58.4% |
| 2026-04-24 | 3,894,596 | 216,639 | 6,399,570 | 60.9% |
| 2026-04-23 | 9,998,203 | 599,761 | 15,704,910 | 63.7% |
| 2026-04-22 | 556,381 | 275 | 939,787 | 59.2% |
| 2026-04-21 | 774,258 | 100 | 1,534,469 | 50.5% |
| 2026-04-20 | 585,837 | 0 | 1,029,729 | 56.9% |
| 2026-04-17 | 603,721 | 1,600 | 1,445,873 | 41.8% |
| 2026-04-16 | 579,250 | 365 | 1,381,073 | 41.9% |
| 2026-04-15 | 402,449 | 4,739 | 1,063,900 | 37.8% |
| 2026-04-14 | 373,677 | 0 | 995,746 | 37.5% |
| 2026-04-13 | 413,973 | 0 | 1,105,663 | 37.4% |
| 2026-04-10 | 459,904 | 3,138 | 983,239 | 46.8% |
| 2026-04-09 | 437,077 | 233 | 977,887 | 44.7% |
| 2026-04-08 | 380,591 | 72 | 798,285 | 47.7% |
| 2026-04-07 | 487,513 | 0 | 982,318 | 49.6% |
| 2026-04-06 | 578,920 | 15 | 1,091,096 | 53.1% |