AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 206 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2022. The put-call ratio across all filers is 16.41 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2023 | $206,950 | +99.0% | 3,346 | +11.9% | 0.00% | 0.0% |
| Q2 2022 | $104,000 | +5.1% | 2,990 | +7.9% | 0.00% | 0.0% |
| Q1 2022 | $99,000 | +230.0% | 2,770 | +114.4% | 0.00% | – |
| Q4 2021 | $30,000 | +36.4% | 1,292 | +9.3% | 0.00% | – |
| Q3 2021 | $22,000 | -15.4% | 1,182 | -9.6% | 0.00% | – |
| Q2 2021 | $26,000 | -3.7% | 1,307 | -12.4% | 0.00% | – |
| Q1 2021 | $27,000 | +1250.0% | 1,492 | +1889.3% | 0.00% | – |
| Q4 2020 | $2,000 | – | 75 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| MQS Management LLC | 10,935 | $255,000 | 0.41% |
| GLOBEFLEX CAPITAL L P | 144,692 | $3,370,000 | 0.34% |
| CORNERCAP INVESTMENT COUNSEL INC | 58,975 | $1,374,000 | 0.20% |
| Factorial Partners, LLC | 10,900 | $254,000 | 0.17% |
| FEDERATED HERMES, INC. | 3,464,335 | $80,684,000 | 0.15% |
| Campbell & CO Investment Adviser LLC | 14,800 | $345,000 | 0.12% |
| FULLER & THALER ASSET MANAGEMENT, INC. | 611,462 | $14,241,000 | 0.08% |
| Summit Global Investments | 45,900 | $1,069,000 | 0.07% |
| RENAISSANCE GROUP LLC | 63,559 | $1,480,000 | 0.06% |
| PDT Partners, LLC | 33,459 | $779,000 | 0.06% |