$37.75
-0.81-2.10%
At Close: -
$37.75
00.00%
After Hours: Jul 5, 4:00 PM EDT
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Amphastar Pharma
AMPHNASDAQ
Amphastar Pharma (NASDAQ:AMPH) Stock, Short Interest Report
Short interest for Amphastar Pharma gives investors a sense of the degree to which investors are betting on the decline of Amphastar Pharma's stock. Short interest data is updated every two weeks.
Short Interest
4.1M
Short Interest %
12.9%
Days to Cover
10.94
| Get Alert | ||||||||
|---|---|---|---|---|---|---|---|---|
| AMPH | Amphastar Pharmaceuticals, Inc | 06/26/2024 | 12.92% | 32,101,959 | 4,146,983 | 378,909 | 10.94 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 06/11/2024 | 11.73% | 32,101,959 | 3,764,831 | 282,364 | 13.33 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 05/24/2024 | 11.74% | 32,101,959 | 3,769,533 | 397,537 | 9.48 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 05/09/2024 | 12.42% | 32,101,959 | 3,987,025 | 316,652 | 12.59 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 04/24/2024 | 12.06% | 32,065,932 | 3,866,483 | 340,376 | 11.36 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 04/09/2024 | 12.07% | 30,435,220 | 3,674,842 | 351,660 | 10.45 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 03/26/2024 | 11.81% | 30,435,220 | 3,595,530 | 572,698 | 6.28 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 03/11/2024 | 12.22% | 30,435,220 | 3,720,310 | 551,482 | 6.75 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 02/27/2024 | 11.88% | 30,246,769 | 3,593,022 | 367,840 | 9.77 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 02/09/2024 | 10.56% | 30,246,769 | 3,194,684 | 412,914 | 7.74 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 01/24/2024 | 9.73% | 30,246,769 | 2,944,087 | 684,797 | 4.3 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 01/10/2024 | 9.20% | 30,246,769 | 2,781,357 | 362,050 | 7.68 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 12/27/2023 | 9.35% | 30,246,769 | 2,827,421 | 537,740 | 5.26 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 12/11/2023 | 9.42% | 30,246,769 | 2,849,167 | 365,694 | 7.79 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 11/27/2023 | 9.56% | 30,246,769 | 2,891,180 | 518,542 | 5.58 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 11/09/2023 | 8.27% | 30,246,769 | 2,502,884 | 285,162 | 8.78 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 10/24/2023 | 8.52% | 31,194,960 | 2,656,364 | 345,343 | 7.69 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 10/10/2023 | 8.40% | 31,194,960 | 2,619,270 | 338,723 | 7.73 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 09/26/2023 | 8.63% | 31,194,960 | 2,692,654 | 944,564 | 2.85 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 09/12/2023 | 4.17% | 31,194,960 | 1,300,986 | 282,777 | 4.6 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 08/24/2023 | 4.78% | 31,194,960 | 1,490,264 | 453,100 | 3.29 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 08/09/2023 | 4.59% | 31,158,164 | 1,430,156 | 392,144 | 3.65 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 07/25/2023 | 6.76% | 30,613,400 | 2,068,587 | 364,455 | 5.68 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 07/12/2023 | 6.57% | 30,613,400 | 2,012,424 | 587,536 | 3.43 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 06/27/2023 | 6.80% | 30,613,400 | 2,080,966 | 493,047 | 4.22 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 06/09/2023 | 6.14% | 30,613,400 | 1,878,289 | 376,148 | 4.99 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 05/24/2023 | 6.20% | 30,613,400 | 1,896,592 | 410,375 | 4.62 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 05/09/2023 | 6.09% | 30,613,400 | 1,864,098 | 430,259 | 4.33 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 04/25/2023 | 4.71% | 30,532,535 | 1,439,328 | 406,203 | 3.54 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 04/12/2023 | 4.30% | 30,532,535 | 1,313,266 | 361,347 | 3.63 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 03/24/2023 | 4.88% | 29,907,193 | 1,460,010 | 397,676 | 3.67 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 03/09/2023 | 5.86% | 29,907,193 | 1,752,791 | 240,281 | 7.29 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 02/27/2023 | 5.80% | 29,907,193 | 1,733,892 | 196,230 | 8.84 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 02/09/2023 | 5.69% | 30,122,442 | 1,715,211 | 188,804 | 9.08 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 01/25/2023 | 5.65% | 30,122,442 | 1,702,945 | 210,053 | 8.11 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 01/11/2023 | 5.71% | 30,122,442 | 1,720,807 | 259,379 | 6.63 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 12/27/2022 | 5.79% | 30,341,559 | 1,757,348 | 194,835 | 9.02 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 12/09/2022 | 5.84% | 30,341,559 | 1,772,096 | 180,608 | 9.81 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 11/25/2022 | 6.07% | 30,341,559 | 1,842,830 | 244,021 | 7.55 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 11/09/2022 | 6.38% | 30,341,559 | 1,935,577 | 187,911 | 10.3 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 10/25/2022 | 6.24% | 30,622,918 | 1,911,814 | 229,548 | 8.33 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 10/11/2022 | 6.17% | 30,622,918 | 1,889,467 | 288,532 | 6.55 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 09/26/2022 | 6.69% | 31,025,545 | 2,077,129 | 305,659 | 6.8 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 09/12/2022 | 7.06% | 31,025,545 | 2,189,474 | 236,851 | 9.24 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 08/24/2022 | 6.97% | 31,025,545 | 2,161,318 | 456,641 | 4.73 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 08/09/2022 | 7.37% | 31,025,545 | 2,287,102 | 251,811 | 9.08 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 07/26/2022 | 7.61% | 31,002,662 | 2,360,566 | 347,888 | 6.79 | Get Alert |
| AMPH | Amphastar Pharmaceuticals, Inc | 07/12/2022 | 7.42% | 31,002,662 | 2,299,447 | 585,438 | 3.93 | Get Alert |
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