AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 250 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2023. The put-call ratio across all filers is 1.02 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,262,104 | -18.9% | 27,443 | +1.3% | 0.01% | -16.7% |
| Q2 2023 | $1,556,575 | +56.8% | 27,085 | +2.3% | 0.01% | +50.0% |
| Q1 2023 | $992,813 | +254.3% | 26,475 | +164.8% | 0.00% | +300.0% |
| Q4 2022 | $280,200 | -15.1% | 10,000 | -14.9% | 0.00% | -50.0% |
| Q3 2022 | $330,000 | -19.3% | 11,755 | 0.0% | 0.00% | 0.0% |
| Q2 2022 | $409,000 | +102.5% | 11,755 | +108.6% | 0.00% | +100.0% |
| Q1 2022 | $202,000 | -24.6% | 5,635 | -60.0% | 0.00% | -50.0% |
| Q3 2016 | $268,000 | +22.4% | 14,105 | +3.8% | 0.00% | 0.0% |
| Q2 2016 | $219,000 | +21.7% | 13,585 | -9.6% | 0.00% | 0.0% |
| Q1 2016 | $180,000 | – | 15,035 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Alambic Investment Management, L.P. | 29,423 | $583,000 | 0.44% |
| Matarin Capital Management, LLC | 223,184 | $4,426,000 | 0.34% |
| Summit Global Investments | 42,725 | $847,000 | 0.10% |
| FEDERATED HERMES, INC. | 1,747,921 | $34,661,000 | 0.08% |
| ROTHSCHILD & CO ASSET MANAGEMENT US INC. | 347,307 | $6,887,000 | 0.08% |
| MARSHALL WACE, LLP | 413,293 | $8,196,000 | 0.06% |
| BOSTON ADVISORS LLC | 42,365 | $840,000 | 0.04% |
| MARTINGALE ASSET MANAGEMENT L P | 214,444 | $4,254,000 | 0.04% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 177,321 | $3,516,000 | 0.04% |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 231,041 | $4,582,000 | 0.04% |