AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 206 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2022. The put-call ratio across all filers is 0.50 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $459,472 | -50.3% | 16,398 | -50.2% | 0.00% | -50.0% |
| Q3 2022 | $924,000 | +241.0% | 32,900 | +321.8% | 0.01% | +166.7% |
| Q2 2022 | $271,000 | -66.4% | 7,800 | -65.3% | 0.00% | -57.1% |
| Q1 2022 | $807,000 | -40.4% | 22,500 | -67.9% | 0.01% | -78.8% |
| Q4 2019 | $1,354,000 | +278.2% | 70,179 | +312.8% | 0.03% | +153.8% |
| Q2 2019 | $358,000 | -59.7% | 17,000 | -60.9% | 0.01% | -58.1% |
| Q1 2019 | $888,000 | +88.9% | 43,500 | +70.2% | 0.03% | -49.2% |
| Q4 2016 | $470,000 | – | 25,561 | – | 0.06% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 130,250 | $4,884,375 | 4.79% |
| SHAKER INVESTMENTS LLC/OH | 82,253 | $3,084,488 | 1.72% |
| Mesirow Institutional Investment Management, Inc. | 325,669 | $12,212,588 | 1.33% |
| Portolan Capital Management | 340,593 | $12,772,238 | 1.22% |
| OBERWEIS ASSET MANAGEMENT INC/ | 178,200 | $6,682,500 | 1.04% |
| Granite Investment Partners, LLC | 536,821 | $20,130,788 | 0.84% |
| Capital Impact Advisors, LLC | 15,304 | $573,900 | 0.70% |
| Hillsdale Investment Management Inc. | 155,038 | $5,813,926 | 0.50% |
| GLOBEFLEX CAPITAL L P | 89,192 | $3,344,700 | 0.41% |
| Jackson Creek Investment Advisors LLC | 25,877 | $970 | 0.41% |