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 | $61,719 | -77.4% | 1,342 | -71.7% | 0.01% | -83.8% |
| Q2 2023 | $272,580 | +630.5% | 4,743 | +376.7% | 0.08% | +566.7% |
| Q1 2023 | $37,313 | -65.3% | 995 | -74.1% | 0.01% | -66.7% |
| Q4 2022 | $107,457 | +76.2% | 3,835 | +77.0% | 0.04% | +20.0% |
| Q3 2022 | $61,000 | -14.1% | 2,167 | +5.6% | 0.03% | -31.8% |
| Q2 2022 | $71,000 | -37.7% | 2,053 | -35.3% | 0.04% | -22.8% |
| Q1 2022 | $114,000 | +90.0% | 3,172 | +22.8% | 0.06% | +103.6% |
| Q4 2021 | $60,000 | – | 2,584 | – | 0.03% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 128,000 | $5,886,720 | 5.78% |
| Beacon Harbor Wealth Advisors, Inc. | 103,095 | $4,741 | 1.58% |
| Capital Impact Advisors, LLC | 15,304 | $703,831 | 1.18% |
| Quantedge Capital Pte Ltd | 36,389 | $1,673,530 | 0.91% |
| Mesirow Institutional Investment Management, Inc. | 183,805 | $8,453,192 | 0.86% |
| Monashee Investment Management LLC | 39,461 | $1,814,811 | 0.76% |
| OBERWEIS ASSET MANAGEMENT INC/ | 152,500 | $7,013,475 | 0.74% |
| Granite Investment Partners, LLC | 330,911 | $15,218,597 | 0.64% |
| Portolan Capital Management | 132,850 | $6,109,772 | 0.57% |
| SHAKER INVESTMENTS LLC/OH | 20,795 | $956,362 | 0.53% |