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 | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $12,183,000 | +218.2% | 339,347 | +106.4% | 0.01% | +200.0% |
| Q4 2021 | $3,829,000 | +33.6% | 164,396 | +9.0% | 0.00% | 0.0% |
| Q3 2021 | $2,866,000 | -6.5% | 150,788 | -0.8% | 0.00% | 0.0% |
| Q2 2021 | $3,065,000 | +51.4% | 152,030 | +37.6% | 0.00% | +100.0% |
| Q1 2021 | $2,024,000 | +0.2% | 110,486 | +10.0% | 0.00% | 0.0% |
| Q4 2020 | $2,020,000 | -7.9% | 100,459 | -14.1% | 0.00% | -50.0% |
| Q3 2020 | $2,193,000 | -14.6% | 116,968 | +2.3% | 0.00% | 0.0% |
| Q2 2020 | $2,569,000 | +101.3% | 114,380 | +33.0% | 0.00% | +100.0% |
| Q1 2020 | $1,276,000 | -44.7% | 85,969 | -28.1% | 0.00% | -50.0% |
| Q4 2019 | $2,307,000 | -25.7% | 119,606 | -23.6% | 0.00% | -33.3% |
| Q3 2019 | $3,106,000 | -14.3% | 156,648 | -8.7% | 0.00% | 0.0% |
| Q2 2019 | $3,624,000 | +12.8% | 171,656 | +9.1% | 0.00% | 0.0% |
| Q1 2019 | $3,214,000 | -20.8% | 157,332 | -22.8% | 0.00% | -25.0% |
| Q4 2018 | $4,056,000 | +82.0% | 203,827 | +76.0% | 0.00% | +100.0% |
| Q3 2018 | $2,228,000 | +136.3% | 115,806 | +87.4% | 0.00% | +100.0% |
| Q2 2018 | $943,000 | -33.1% | 61,792 | -17.8% | 0.00% | 0.0% |
| Q1 2018 | $1,409,000 | +2.8% | 75,132 | +5.5% | 0.00% | 0.0% |
| Q4 2017 | $1,370,000 | +57.1% | 71,182 | +45.9% | 0.00% | 0.0% |
| Q3 2017 | $872,000 | +7.0% | 48,791 | +7.0% | 0.00% | 0.0% |
| Q2 2017 | $815,000 | +111.7% | 45,615 | +72.0% | 0.00% | 0.0% |
| Q1 2017 | $385,000 | -67.4% | 26,524 | -58.6% | 0.00% | -50.0% |
| Q4 2016 | $1,182,000 | +0.1% | 64,145 | +3.1% | 0.00% | 0.0% |
| Q3 2016 | $1,181,000 | +27.8% | 62,233 | +8.5% | 0.00% | +100.0% |
| Q2 2016 | $924,000 | +64.7% | 57,345 | +22.6% | 0.00% | 0.0% |
| Q1 2016 | $561,000 | -6.2% | 46,769 | +11.3% | 0.00% | 0.0% |
| Q4 2015 | $598,000 | +219.8% | 42,038 | +162.6% | 0.00% | – |
| Q3 2015 | $187,000 | – | 16,009 | – | 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% |