AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 117 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2018. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2019 | $248,000 | -33.5% | 11,758 | -35.5% | 0.00% | -55.6% |
| Q1 2019 | $373,000 | +67.3% | 18,231 | +57.2% | 0.01% | +125.0% |
| Q3 2018 | $223,000 | +13.2% | 11,600 | +13.0% | 0.00% | +33.3% |
| Q4 2017 | $197,000 | -55.3% | 10,261 | -58.4% | 0.00% | -40.0% |
| Q2 2017 | $441,000 | -48.2% | 24,680 | -58.0% | 0.01% | -50.0% |
| Q1 2017 | $852,000 | +50.0% | 58,746 | +90.4% | 0.01% | +66.7% |
| Q4 2016 | $568,000 | – | 30,862 | – | 0.01% | – |
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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% |