AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 211 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2022. The put-call ratio across all filers is 0.20 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $15,016,057 | -23.6% | 326,507 | -4.6% | 0.00% | -25.0% |
| Q2 2023 | $19,661,694 | +51.0% | 342,121 | -1.5% | 0.00% | +33.3% |
| Q1 2023 | $13,020,452 | +34.3% | 347,212 | +0.3% | 0.00% | +50.0% |
| Q4 2022 | $9,695,367 | -4.9% | 346,016 | -4.6% | 0.00% | 0.0% |
| Q3 2022 | $10,197,000 | -19.9% | 362,875 | -0.8% | 0.00% | -33.3% |
| Q2 2022 | $12,727,000 | -11.7% | 365,846 | -8.9% | 0.00% | 0.0% |
| Q1 2022 | $14,409,000 | +66.8% | 401,405 | +8.2% | 0.00% | +50.0% |
| Q4 2021 | $8,639,000 | +24.8% | 370,943 | +1.9% | 0.00% | +100.0% |
| Q3 2021 | $6,920,000 | -3.4% | 364,000 | +2.4% | 0.00% | 0.0% |
| Q2 2021 | $7,167,000 | +3.3% | 355,548 | -6.1% | 0.00% | 0.0% |
| Q1 2021 | $6,937,000 | -10.7% | 378,683 | -2.0% | 0.00% | -50.0% |
| Q4 2020 | $7,769,000 | +7.4% | 386,352 | +0.1% | 0.00% | 0.0% |
| Q3 2020 | $7,237,000 | -14.7% | 386,025 | +2.2% | 0.00% | 0.0% |
| Q2 2020 | $8,481,000 | +53.2% | 377,604 | +1.2% | 0.00% | 0.0% |
| Q1 2020 | $5,535,000 | -26.2% | 372,980 | -4.1% | 0.00% | 0.0% |
| Q4 2019 | $7,498,000 | -1.4% | 388,765 | +1.4% | 0.00% | 0.0% |
| Q3 2019 | $7,602,000 | -7.6% | 383,321 | -1.7% | 0.00% | 0.0% |
| Q2 2019 | $8,230,000 | +0.6% | 389,898 | -2.6% | 0.00% | 0.0% |
| Q1 2019 | $8,179,000 | -8.1% | 400,380 | -10.5% | 0.00% | -33.3% |
| Q4 2018 | $8,898,000 | +10.4% | 447,128 | +6.7% | 0.00% | +50.0% |
| Q3 2018 | $8,060,000 | +29.4% | 418,903 | +2.7% | 0.00% | 0.0% |
| Q2 2018 | $6,227,000 | -19.9% | 408,066 | -1.5% | 0.00% | 0.0% |
| Q1 2018 | $7,770,000 | -0.2% | 414,388 | +2.4% | 0.00% | 0.0% |
| Q4 2017 | $7,788,000 | -4.5% | 404,789 | -11.3% | 0.00% | 0.0% |
| Q3 2017 | $8,152,000 | -4.6% | 456,156 | -4.7% | 0.00% | 0.0% |
| Q2 2017 | $8,549,000 | +13.4% | 478,646 | -7.9% | 0.00% | 0.0% |
| Q1 2017 | $7,536,000 | -12.3% | 519,802 | +11.4% | 0.00% | 0.0% |
| Q4 2016 | $8,595,000 | +4.2% | 466,588 | +7.3% | 0.00% | 0.0% |
| Q3 2016 | $8,246,000 | +168.1% | 434,724 | +127.8% | 0.00% | +100.0% |
| Q2 2016 | $3,076,000 | +100.1% | 190,849 | +49.0% | 0.00% | – |
| Q1 2016 | $1,537,000 | -13.6% | 128,118 | +2.5% | 0.00% | -100.0% |
| Q4 2015 | $1,778,000 | +21.7% | 124,942 | 0.0% | 0.00% | – |
| Q3 2015 | $1,461,000 | -32.2% | 124,942 | +2.0% | 0.00% | -100.0% |
| Q2 2015 | $2,154,000 | +313.4% | 122,513 | +252.1% | 0.00% | – |
| Q1 2015 | $521,000 | +64.9% | 34,791 | +27.8% | 0.00% | – |
| Q4 2014 | $316,000 | +28.5% | 27,217 | +29.3% | 0.00% | – |
| Q3 2014 | $246,000 | – | 21,042 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EAM Investors, LLC | 173,018 | $3,187,000 | 0.42% |
| GLOBEFLEX CAPITAL L P | 50,686 | $934,000 | 0.23% |
| KALMAR INVESTMENTS INC /DE/ | 240,648 | $4,433,000 | 0.23% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 63,661 | $1,173,000 | 0.19% |
| OBERWEIS ASSET MANAGEMENT INC/ | 27,200 | $501,000 | 0.15% |
| Invictus RG | 11,950 | $220,000 | 0.15% |
| ACADIAN ASSET MANAGEMENT LLC | 1,502,151 | $27,668,000 | 0.13% |
| FOX RUN MANAGEMENT, L.L.C. | 12,600 | $232,000 | 0.12% |
| Piermont Capital Management Inc. | 26,153 | $482,000 | 0.11% |
| FEDERATED HERMES, INC. | 1,344,684 | $24,769,000 | 0.07% |