AMPH
Amphastar Pharmaceuticals, Inc.Company with tickers: AMPH
CIK
1297184
CUSIP
03209R103
Shares Outstanding
45,370,171
Price
Holdings
Short Volume
Short Interest
Fails to Deliver
SEC Filings
Earnings Calls
Insider Trading
Congress Trades
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 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 |
| 2025-04-30 | 3,206,270 | 2,967,637 | +238,633 | 6.89 |
| 2025-04-15 | 2,967,637 | 3,422,379 | -454,742 | 3.78 |
| 2025-03-31 | 3,422,379 | 3,852,850 | -430,471 | 5.69 |