AMPH
Amphastar Pharmaceuticals, Inc.Company with tickers: AMPH
CIK
1297184
CUSIP
03209R103
Shares Outstanding
44,092,919
13F Activity (30d)
179 filings
176 filers
Price
$18.17
Market Cap
$811.75M
P/E Ratio
8.95
EPS (Diluted)
$2.03
52W High
$31.26
52W Low
$16.65
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 | 70,012 | 261 | 128,434 | 54.5% |
| 2026-05-21 | 168,392 | 335 | 860,266 | 19.6% |
| 2026-05-20 | 120,829 | 336 | 342,705 | 35.3% |
| 2026-05-19 | 135,955 | 0 | 266,880 | 50.9% |
| 2026-05-18 | 248,970 | 31 | 325,776 | 76.4% |
| 2026-05-15 | 209,877 | 0 | 264,267 | 79.4% |
| 2026-05-14 | 141,809 | 0 | 290,815 | 48.8% |
| 2026-05-13 | 143,188 | 4 | 321,472 | 44.5% |
| 2026-05-12 | 229,401 | 0 | 556,836 | 41.2% |
| 2026-05-11 | 283,119 | 2,618 | 451,089 | 62.8% |
| 2026-05-08 | 476,889 | 4,923 | 933,282 | 51.1% |
| 2026-05-07 | 84,509 | 0 | 124,548 | 67.9% |
| 2026-05-06 | 96,430 | 0 | 124,110 | 77.7% |
| 2026-05-05 | 89,225 | 0 | 126,464 | 70.6% |
| 2026-05-04 | 144,870 | 0 | 183,353 | 79.0% |
| 2026-05-01 | 120,010 | 39,100 | 139,392 | 86.1% |
| 2026-04-30 | 105,105 | 0 | 142,848 | 73.6% |
| 2026-04-29 | 56,947 | 0 | 79,672 | 71.5% |
| 2026-04-28 | 58,282 | 0 | 91,087 | 64.0% |
| 2026-04-27 | 80,996 | 0 | 107,113 | 75.6% |
| 2026-04-24 | 92,374 | 0 | 124,049 | 74.5% |
| 2026-04-23 | 62,472 | 0 | 105,038 | 59.5% |
| 2026-04-22 | 89,026 | 0 | 143,555 | 62.0% |
| 2026-04-21 | 167,564 | 0 | 227,046 | 73.8% |
| 2026-04-20 | 154,810 | 0 | 188,437 | 82.2% |
| 2026-04-17 | 115,949 | 0 | 186,907 | 62.0% |
| 2026-04-16 | 70,541 | 192 | 125,583 | 56.2% |
| 2026-04-15 | 72,331 | 0 | 108,486 | 66.7% |
| 2026-04-14 | 95,781 | 66 | 150,296 | 63.7% |
| 2026-04-13 | 231,881 | 8 | 282,377 | 82.1% |
| 2026-04-10 | 57,176 | 297 | 98,156 | 58.3% |
| 2026-04-09 | 81,730 | 0 | 132,598 | 61.6% |
| 2026-04-08 | 107,973 | 1 | 174,289 | 62.0% |
| 2026-04-07 | 64,435 | 100 | 132,755 | 48.5% |
| 2026-04-06 | 49,059 | 1 | 84,972 | 57.7% |