Amphastar Pharmaceuticals, Inc. AMPH
CIK 0001297184 · CUSIP 03209R103
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock, Inc. CIK 2012383 · View history | $130.16M 5,668,793 shares | 0.00% | -478.87K(-7.80%)Reduced | SEC filing ↗ Aug 12, 2025 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $61.69M 2,686,950 shares | 0.00% | +264.05K(+10.90%)Added | SEC filing ↗ Aug 11, 2025 | ▾ |
| 03 | TD Asset Management Inc CIK 1056053 · View history | $46.72M 2,034,930 shares | 0.04% | -177.21K(-8.00%)Reduced | SEC filing ↗ Jul 28, 2025 | ▾ |
| 04 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $37.35M 1,626,884 shares | 0.01% | +270.52K(+19.90%)Added | SEC filing ↗ Aug 12, 2025 | ▾ |
| 05 | STATE STREET CORP CIK 93751 · View history | $36.19M 1,576,233 shares | 0.00% | -28.38K(-1.80%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 06 | FULLER & THALER ASSET MANAGEMENT, INC. CIK 1082327 · View history | $29.02M 1,263,772 shares | 0.11% | +174(0.00%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 07 | Epoch Investment Partners, Inc. CIK 1305841 · View history | $28.50M 1,241,369 shares | 0.15% | -19.94K(-1.60%)Reduced | SEC filing ↗ Aug 13, 2025 | ▾ |
| 08 | Boston Trust Walden Corp CIK 1534866 · View history | $27.01M 1,176,453 shares | 0.19% | -39.17K(-3.20%)Reduced | SEC filing ↗ Jul 28, 2025 | ▾ |
| 09 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $22.35M 973,237 shares | 0.00% | +18.16K(+1.90%)Added | SEC filing ↗ Aug 8, 2025 | ▾ |
| 10 | MARSHALL WACE, LLP CIK 1318757 · View history | $19.49M 848,685 shares | 0.02% | -183.04K(-17.70%)Reduced | SEC filing ↗ Aug 13, 2025 | ▾ |
| 11 | MORGAN STANLEY CIK 895421 · View history | $15.64M 681,222 shares | 0.00% | +159.11K(+30.50%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 12 | MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history | $14.21M 618,984 shares | 0.01% | -249.57K(-28.70%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 13 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $13.24M 576,500 shares | 0.02% | +81.50K(+16.50%)Added | SEC filing ↗ Aug 13, 2025 | ▾ |
| 14 | Qube Research & Technologies Ltd CIK 1729829 · View history | $10.78M 469,492 shares | 0.01% | +210.51K(+81.30%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 15 | NORTHERN TRUST CORP CIK 73124 · View history | $9.67M 421,136 shares | 0.00% | -173.30K(-29.20%)Reduced | SEC filing ↗ Aug 13, 2025 | ▾ |
| 16 | Invesco Ltd. CIK 914208 · View history | $8.88M 386,971 shares | 0.00% | +27.83K(+7.70%)Added | SEC filing ↗ Aug 13, 2025 | ▾ |
| 17 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC CIK 1164833 · View history | $8.40M 365,920 shares | 0.03% | +95.77K(+35.50%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 18 | SYSTEMATIC FINANCIAL MANAGEMENT LP CIK 1085936 · View history | $8.25M 359,307 shares | 0.22% | +32.76K(+10.00%)Added | SEC filing ↗ Aug 13, 2025 | ▾ |
| 19 | GOLDMAN SACHS GROUP INC CIK 886982 · View history | $8.18M 356,250 shares | 0.00% | -50.46K(-12.40%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history | $7.96M 346,784 shares | 0.00% | +20.56K(+6.30%)Added | SEC filing ↗ Aug 12, 2025 | ▾ |
Showing 20 / 246 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
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