Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) has 229 institutional investors that have filed 13F reports for the period ending December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| BlackRock, Inc. | 31 Dec, 2025 | 5,462,015 | -23,042 | -0.42% | $146,272,762.00 |
| BlackRock, Inc. | 31 Dec, 2025 | 5,421,343 | -40,672 | -0.74% | $106,204,108.00 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 31 Dec, 2025 | 2,788,926 | 1,434,999 | 105.99% | $74,687,450.00 |
| VANGUARD GROUP INC | 31 Dec, 2025 | 2,608,158 | -22,882 | -0.87% | $69,846,471.00 |
| DIMENSIONAL FUND ADVISORS LP | 31 Dec, 2025 | 2,027,947 | 228,262 | 12.68% | $39,726,234.00 |
| TD ASSET MANAGEMENT INC | 31 Dec, 2025 | 1,963,052 | 31,160 | 1.61% | $52,570,533.00 |
| DIMENSIONAL FUND ADVISORS LP | 31 Dec, 2025 | 1,799,685 | 44,020 | 2.51% | $48,196,126.00 |
| State Street Corp | 31 Dec, 2025 | 1,607,515 | 75,729 | 4.94% | $31,491,219.00 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Dec, 2025 | 1,543,655 | 1,543,655 | 0.00% | $30,240,201.00 |
| TD ASSET MANAGEMENT INC | 31 Dec, 2025 | 1,541,044 | -422,008 | -21.50% | $30,189,052.00 |
| State Street Corp | 31 Dec, 2025 | 1,531,786 | 31,044 | 2.07% | $41,021,229.00 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 31 Dec, 2025 | 1,395,139 | -1,393,787 | -49.98% | $27,330,780.00 |
| MARSHALL WACE, LLP | 31 Dec, 2025 | 1,237,284 | 363,216 | 41.55% | $33,134,466.00 |
| Epoch Investment Partners, Inc. | 31 Dec, 2025 | 1,126,585 | -7,401 | -0.65% | $30,169,946.00 |
| Goldman Sachs Group Inc | 31 Dec, 2025 | 1,113,418 | 872,190 | 361.56% | $29,817,334.00 |
| Boston Trust Walden Corp | 31 Dec, 2025 | 1,087,266 | -85,841 | -7.32% | $29,116,984.00 |
| MARSHALL WACE, LLP | 31 Dec, 2025 | 1,025,640 | -211,644 | -17.11% | $20,092,287.00 |
| AMERICAN CENTURY COMPANIES INC | 31 Dec, 2025 | 1,017,538 | 352,202 | 52.94% | $19,933,570.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Dec, 2025 | 976,650 | 89,825 | 10.13% | $19,135,848.00 |
| Epoch Investment Partners, Inc. | 31 Dec, 2025 | 898,895 | -227,690 | -20.21% | $17,609,353.00 |