The institutional landscape for Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) includes 71 filers as of the latest reporting cycle ending December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| BlackRock, Inc. | 30 Sep, 2025 | 5,485,057 | -183,736 | -3.24% | $146,176,770.00 |
| VANGUARD GROUP INC | 30 Sep, 2025 | 2,631,040 | -55,910 | -2.08% | $70,117,216.00 |
| TD ASSET MANAGEMENT INC | 30 Sep, 2025 | 1,931,892 | -103,038 | -5.06% | $51,484,922.00 |
| DIMENSIONAL FUND ADVISORS LP | 30 Sep, 2025 | 1,755,665 | 128,781 | 7.92% | $46,789,114.00 |
| STATE STREET CORP | 30 Sep, 2025 | 1,500,742 | -75,491 | -4.79% | $39,994,774.00 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 30 Sep, 2025 | 1,353,927 | 90,155 | 7.13% | $36,082,167.00 |
| Boston Trust Walden Corp | 30 Sep, 2025 | 1,173,107 | -3,346 | -0.28% | $31,263,302.00 |
| Epoch Investment Partners, Inc. | 30 Sep, 2025 | 1,133,986 | -107,383 | -8.65% | $30,220,727.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 30 Sep, 2025 | 922,577 | -50,660 | -5.21% | $24,590,067.00 |
| MARSHALL WACE, LLP | 30 Sep, 2025 | 874,068 | 25,383 | 2.99% | $23,293,911.00 |
| MILLENNIUM MANAGEMENT LLC | 30 Sep, 2025 | 697,765 | 78,781 | 12.73% | $18,595,437.00 |
| RENAISSANCE TECHNOLOGIES LLC | 30 Sep, 2025 | 586,900 | 10,400 | 1.80% | $15,640,885.00 |
| MORGAN STANLEY | 30 Sep, 2025 | 574,679 | -106,543 | -15.64% | $15,315,209.00 |
| D. E. Shaw & Co., Inc. | 30 Sep, 2025 | 517,222 | 223,294 | 75.97% | $13,783,966.00 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | 30 Sep, 2025 | 423,112 | 63,805 | 17.76% | $11,275,974.00 |
| NORTHERN TRUST CORP | 30 Sep, 2025 | 399,470 | -21,666 | -5.14% | $10,645,876.00 |
| ALGERT GLOBAL LLC | 30 Sep, 2025 | 392,902 | 268,612 | 216.12% | $10,471.00 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 30 Sep, 2025 | 392,310 | 311,071 | 382.91% | $10,455,062.00 |
| Invesco Ltd. | 30 Sep, 2025 | 389,593 | 2,622 | 0.68% | $10,382,654.00 |
| ROYCE & ASSOCIATES LP | 30 Sep, 2025 | 366,322 | 83,135 | 29.36% | $9,762,481.00 |