AMPH
Amphastar Pharmaceuticals, Inc.Company with tickers: AMPH
CIK
1297184
CUSIP
03209R103
Shares Outstanding
44,092,919
Price History
Institutional Holders
Short Volume
Short Interest
Fails to Deliver
Financials
SEC Filings
Earnings Calls
Insider Trades
Congressional Trades
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 2026-04-30 | 3,585,957 | 3,903,290 | -317,333 | 8.71 |
| 2026-04-15 | 3,903,290 | 3,527,477 | +375,813 | 8.63 |
| 2026-03-31 | 3,527,477 | 3,738,333 | -210,856 | 6.70 |
| 2026-03-13 | 3,738,333 | 3,658,291 | +80,042 | 5.15 |
| 2026-02-27 | 3,658,291 | 3,719,566 | -61,275 | 6.13 |
| 2026-02-13 | 3,719,566 | 3,843,799 | -124,233 | 11.17 |
| 2026-01-30 | 3,843,799 | 3,803,135 | +40,664 | 14.99 |
| 2026-01-15 | 3,803,135 | 4,096,041 | -292,906 | 9.91 |
| 2025-12-31 | 4,096,041 | 3,981,951 | +114,090 | 11.40 |
| 2025-12-15 | 3,981,951 | 3,343,646 | +638,305 | 10.62 |
| 2025-11-28 | 3,343,646 | 3,589,725 | -246,079 | 8.66 |
| 2025-11-14 | 3,589,725 | 4,194,131 | -604,406 | 6.57 |
| 2025-10-31 | 4,194,131 | 4,291,932 | -97,801 | 11.62 |
| 2025-10-15 | 4,291,932 | 3,977,178 | +314,754 | 11.92 |
| 2025-09-30 | 3,977,178 | 4,130,306 | -153,128 | 7.28 |
| 2025-09-15 | 4,130,306 | 4,155,237 | -24,931 | 10.03 |
| 2025-08-29 | 4,155,237 | 4,134,257 | +20,980 | 10.22 |
| 2025-08-15 | 4,134,257 | 4,024,867 | +109,390 | 5.10 |
| 2025-07-31 | 4,024,867 | 4,005,661 | +19,206 | 9.09 |
| 2025-07-15 | 4,005,661 | 4,062,426 | -56,765 | 8.27 |
| 2025-06-30 | 4,062,426 | 4,080,346 | -17,920 | 7.79 |
| 2025-06-13 | 4,080,346 | 4,096,720 | -16,374 | 8.13 |
| 2025-05-30 | 4,096,720 | 4,005,726 | +90,994 | 9.00 |
| 2025-05-15 | 4,005,726 | 3,206,270 | +799,456 | 6.13 |