Amphastar Pharmaceuticals Inc Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| BLACKROCK, INC. | 05/13/2026 | 5.42 M | $106.20 M | -0.74% | 11.60% |
| DIMENSIONAL FUND ADVISORS LP | 05/07/2026 | 2.03 M | $39.73 M | 12.68% | 4.34% |
| STATE STREET CORP | 05/15/2026 | 1.61 M | $31.49 M | 4.94% | 3.44% |
| 05/15/2026 | 1.54 M | $30.24 M | 100.00% | 3.30% | |
| TD ASSET MANAGEMENT INC | 05/11/2026 | 1.54 M | $30.19 M | -21.50% | 3.30% |
| FULLER & THALER ASSET MANAGEMENT, INC. | 05/14/2026 | 1.40 M | $27.33 M | 0.05% | 2.98% |
| MARSHALL WACE, LLP | 05/15/2026 | 1.03 M | $20.09 M | -17.11% | 2.19% |
| AMERICAN CENTURY COMPANIES INC | 05/15/2026 | 1.02 M | $19.93 M | 52.94% | 2.18% |
| GEODE CAPITAL MANAGEMENT, LLC | 05/15/2026 | 976.65 K | $19.14 M | 10.13% | 2.09% |
| BOSTON TRUST WALDEN CORP | 04/24/2026 | 944.79 K | $18.51 M | -13.10% | 2.02% |
| EPOCH INVESTMENT PARTNERS, INC. | 05/14/2026 | 898.90 K | $17.61 M | -20.21% | 1.92% |
| 05/08/2026 | 787.82 K | $15.43 M | 100.00% | 1.69% | |
| D. E. SHAW & CO., INC. | 05/15/2026 | 665.54 K | $13.04 M | 19.47% | 1.42% |
| LSV ASSET MANAGEMENT | 05/11/2026 | 651.71 K | $12.77 M | 490.86% | 1.39% |
| INVESCO LTD. | 05/12/2026 | 604.77 K | $11.85 M | 20.62% | 1.29% |
| RENAISSANCE TECHNOLOGIES LLC | 05/14/2026 | 553.90 K | $10.85 M | 1.69% | 1.19% |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | 05/13/2026 | 452.90 K | $8.87 M | 3.98% | 0.97% |
| MORGAN STANLEY | 05/15/2026 | 420.34 K | $8.23 M | -28.95% | 0.90% |
| UBS GROUP AG | 05/05/2026 | 420.26 K | $8.23 M | 63.77% | 0.90% |
| ROYCE & ASSOCIATES LP | 05/12/2026 | 406.18 K | $7.96 M | 15.29% | 0.87% |
| NORTHERN TRUST CORP | 05/14/2026 | 372.28 K | $7.29 M | 0.24% | 0.80% |
| MILLENNIUM MANAGEMENT LLC | 05/15/2026 | 371.37 K | $7.28 M | 27.76% | 0.79% |
| BRIDGE CITY CAPITAL, LLC | 05/13/2026 | 335.11 K | $6.56 M | 42.30% | 0.72% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 05/15/2026 | 330.46 K | $6.47 M | 2.14% | 0.71% |
| GOLDMAN SACHS GROUP INC | 05/15/2026 | 329.39 K | $6.45 M | -40.83% | 0.70% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 05/14/2026 | 325.29 K | $6.37 M | -41.85% | 0.70% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 05/15/2026 | 321.04 K | $6.29 M | -8.46% | 0.69% |
| DENALI ADVISORS LLC | 05/08/2026 | 266.47 K | $5.22 M | 25.83% | 0.57% |
| PACER ADVISORS, INC. | 06/18/2026 | 261.48 K | $5.12 M | 47.11% | 0.56% |
| VICTORY CAPITAL MANAGEMENT INC | 05/15/2026 | 249.62 K | $4.89 M | -18.20% | 0.53% |
| BANK OF NEW YORK MELLON CORP | 05/05/2026 | 243.23 K | $4.76 M | -6.11% | 0.52% |
| VANGUARD FIDUCIARY TRUST CO | 05/08/2026 | 231.04 K | $4.53 M | 100.00% | 0.49% |
| PRINCIPAL FINANCIAL GROUP INC | 05/04/2026 | 209.13 K | $4.10 M | -4.06% | 0.45% |
| RICE HALL JAMES & ASSOCIATES, LLC | 05/15/2026 | 187.35 K | $3.67 M | 54.61% | 0.40% |
| EMPOWERED FUNDS, LLC | 06/16/2026 | 181.33 K | $3.55 M | 9.30% | 0.39% |
| BANK OF AMERICA CORP /DE/ | 05/18/2026 | 174.32 K | $3.41 M | 36.01% | 0.37% |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 05/15/2026 | 171.19 K | $3.35 M | -25.99% | 0.37% |
| BNP PARIBAS ARBITRAGE, SNC | 05/12/2026 | 156.08 K | $3.06 M | 29.10% | 0.33% |
| FIRST TRUST ADVISORS LP | 05/13/2026 | 150.59 K | $2.95 M | 7.33% | 0.32% |
| NEW YORK STATE COMMON RETIREMENT FUND | 05/06/2026 | 148.72 K | $2.91 M | 18.06% | 0.32% |
| UNIVERSAL- BETEILIGUNGS- UND SERVICEGESELLSCHAFT MBH | 05/11/2026 | 139.40 K | $2.73 M | 378.98% | 0.30% |
| FRANKLIN RESOURCES INC | 05/13/2026 | 139.31 K | $2.73 M | 434.86% | 0.30% |
| TWO SIGMA INVESTMENTS, LP | 05/15/2026 | 138.15 K | $2.71 M | 40.00% | 0.30% |
| LAM GROUP, INC. | 04/22/2026 | 130.80 K | $2.56 M | 0.00% | 0.28% |
| PUBLIC SECTOR PENSION INVESTMENT BOARD | 05/13/2026 | 126.57 K | $2.48 M | 3.32% | 0.27% |
| NORDEA INVESTMENT MANAGEMENT AB | 05/13/2026 | 123.82 K | $2.42 M | -4.12% | 0.26% |
| BESSEMER GROUP INC | 05/06/2026 | 122.05 K | $2.39 M | 0.96% | 0.26% |
| JPMORGAN CHASE & CO | 05/13/2026 | 104.57 K | $2.01 M | -34.08% | 0.22% |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 05/13/2026 | 103.93 K | $2.04 M | 19.21% | 0.22% |
| JANE STREET GROUP, LLC | 05/12/2026 | 92.48 K | $1.81 M | -57.49% | 0.20% |
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Amphastar Pharmaceuticals Inc institutional Ownership - FAQ's
During the previous two years, 318 institutional investors and hedge funds held shares of Amphastar Pharmaceuticals Inc. The most heavily invested institutionals were:
BlackRock, Inc.: 5.42 M
DIMENSIONAL FUND ADVISORS LP: 2.03 M
STATE STREET CORP: 1.61 M
TD ASSET MANAGEMENT INC: 1.54 M
FULLER & THALER ASSET MANAGEMENT, INC.: 1.4 M
MARSHALL WACE, LLP: 1.03 M
69.20% of Amphastar Pharmaceuticals Inc stock is owned by institutional investors.
Institutional investors have bought a total of 47.14 M shares in the last 24 months. This purchase volume represents approximately $905.51 M in transactions.