Stocktoria
Amphastar Pharmaceuticals, Inc. AMPH
Amphastar Pharmaceuticals, Inc. institutional holders
| Investor | Shares | Value | % of company |
|---|---|---|---|
| BlackRock Finance, Inc. | 5,942,524 | $237.7M | 12.33% |
| D. E. Shaw & Co., Inc. | 887,048 | $17.9M | 1.84% |
| RENAISSANCE TECHNOLOGIES LLC | 525,100 | $10.6M | 1.09% |
| TWO SIGMA INVESTMENTS, LP | 248,115 | $5.0M | 0.51% |
| AQR CAPITAL MANAGEMENT LLC | 208,651 | $4.2M | 0.43% |
| Point72 Asset Management, L.P. | 54,964 | $1.1M | 0.11% |
| CITADEL ADVISORS LLC | 37,631 | $759,394 | 0.08% |
| MILLENNIUM MANAGEMENT LLC | 31,814 | $642,007 | 0.07% |
% of company = reported institutional shares ÷ shares outstanding. Based on the latest reports; not every holder reports every quarter.
Computed from company filings · US · as of 2025-12-31. Facts plus Stocktoria's own computed scores — not investment advice.