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 | $1,955,633 | -26.9% | 42,523 | -8.7% | 0.00% | -25.0% |
| Q2 2023 | $2,676,033 | +48.0% | 46,564 | -3.4% | 0.00% | +33.3% |
| Q1 2023 | $1,808,100 | +30.6% | 48,216 | -2.4% | 0.00% | +50.0% |
| Q4 2022 | $1,384,440 | +0.5% | 49,409 | +0.8% | 0.00% | 0.0% |
| Q3 2022 | $1,378,000 | -20.4% | 49,024 | -1.5% | 0.00% | -33.3% |
| Q2 2022 | $1,731,000 | -0.3% | 49,751 | +2.9% | 0.00% | +50.0% |
| Q1 2022 | $1,736,000 | +42.2% | 48,368 | -7.7% | 0.00% | +100.0% |
| Q4 2021 | $1,221,000 | +26.3% | 52,424 | +3.1% | 0.00% | 0.0% |
| Q3 2021 | $967,000 | -6.1% | 50,866 | -0.5% | 0.00% | 0.0% |
| Q2 2021 | $1,030,000 | +2.3% | 51,101 | -7.0% | 0.00% | 0.0% |
| Q1 2021 | $1,007,000 | -9.2% | 54,945 | -0.4% | 0.00% | -50.0% |
| Q4 2020 | $1,109,000 | +7.3% | 55,143 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $1,034,000 | -15.0% | 55,143 | +1.8% | 0.00% | 0.0% |
| Q2 2020 | $1,217,000 | +51.4% | 54,193 | 0.0% | 0.00% | 0.0% |
| Q1 2020 | $804,000 | -23.3% | 54,193 | -0.2% | 0.00% | 0.0% |
| Q4 2019 | $1,048,000 | -5.5% | 54,321 | -2.8% | 0.00% | 0.0% |
| Q3 2019 | $1,109,000 | -4.9% | 55,912 | +1.2% | 0.00% | 0.0% |
| Q2 2019 | $1,166,000 | +6.0% | 55,244 | +2.6% | 0.00% | 0.0% |
| Q1 2019 | $1,100,000 | -3.0% | 53,838 | -5.5% | 0.00% | -33.3% |
| Q4 2018 | $1,134,000 | +8.3% | 56,973 | +4.7% | 0.00% | +50.0% |
| Q3 2018 | $1,047,000 | +26.1% | 54,411 | -0.0% | 0.00% | 0.0% |
| Q2 2018 | $830,000 | -19.9% | 54,414 | -1.5% | 0.00% | 0.0% |
| Q1 2018 | $1,036,000 | -5.9% | 55,238 | -3.4% | 0.00% | 0.0% |
| Q4 2017 | $1,101,000 | +6.2% | 57,208 | -1.4% | 0.00% | 0.0% |
| Q3 2017 | $1,037,000 | -9.7% | 58,013 | -9.8% | 0.00% | 0.0% |
| Q2 2017 | $1,149,000 | +13.0% | 64,333 | -8.3% | 0.00% | 0.0% |
| Q1 2017 | $1,017,000 | -24.8% | 70,133 | -4.5% | 0.00% | -33.3% |
| Q4 2016 | $1,353,000 | -5.3% | 73,433 | -2.5% | 0.00% | 0.0% |
| Q3 2016 | $1,429,000 | +18.8% | 75,333 | +0.9% | 0.00% | 0.0% |
| Q2 2016 | $1,203,000 | +48.9% | 74,633 | +10.8% | 0.00% | +50.0% |
| Q1 2016 | $808,000 | -3.5% | 67,342 | +14.5% | 0.00% | 0.0% |
| Q4 2015 | $837,000 | +23.8% | 58,831 | +1.7% | 0.00% | 0.0% |
| Q3 2015 | $676,000 | -33.7% | 57,822 | -0.3% | 0.00% | 0.0% |
| Q2 2015 | $1,020,000 | +296.9% | 58,022 | +237.9% | 0.00% | +100.0% |
| Q1 2015 | $257,000 | +29.1% | 17,173 | 0.0% | 0.00% | – |
| Q4 2014 | $199,000 | 0.0% | 17,173 | +0.4% | 0.00% | – |
| Q3 2014 | $199,000 | – | 17,100 | – | 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% |