Amphastar Pharmaceuticals Inc Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| BLACKROCK, INC. | 08/07/2026 | 5.22 M | $105.44 M | -3.62% | 11.53% |
| DIMENSIONAL FUND ADVISORS LP | 08/11/2026 | 2.31 M | $46.52 M | 13.67% | 5.09% |
| STATE STREET CORP | 08/07/2026 | 1.64 M | $33.14 M | 2.15% | 3.62% |
| VANGUARD CAPITAL MANAGEMENT LLC | 08/13/2026 | 1.48 M | $29.91 M | -4.00% | 3.27% |
| AMERICAN CENTURY COMPANIES INC | 08/12/2026 | 1.18 M | $23.74 M | 15.63% | 2.60% |
| MARSHALL WACE, LLP | 08/13/2026 | 1.07 M | $21.52 M | 3.97% | 2.35% |
| GEODE CAPITAL MANAGEMENT, LLC | 08/12/2026 | 969.84 K | $19.58 M | -0.70% | 2.14% |
| FULLER & THALER ASSET MANAGEMENT, INC. | 08/12/2026 | 949.24 K | $19.16 M | -31.96% | 2.09% |
| D. E. SHAW & CO., INC. | 08/14/2026 | 887.05 K | $17.90 M | 33.28% | 1.96% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 08/13/2026 | 809.57 K | $16.34 M | 2.76% | 1.79% |
| LSV ASSET MANAGEMENT | 08/06/2026 | 642.01 K | $12.96 M | -1.49% | 1.42% |
| RENAISSANCE TECHNOLOGIES LLC | 08/13/2026 | 525.10 K | $10.60 M | -5.20% | 1.16% |
| GOLDMAN SACHS GROUP INC | 08/14/2026 | 505.36 K | $10.20 M | 53.42% | 1.12% |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | 08/14/2026 | 437.38 K | $8.83 M | -3.43% | 0.97% |
| MORGAN STANLEY | 08/13/2026 | 434.84 K | $8.78 M | 3.45% | 0.96% |
| UBS GROUP AG | 08/13/2026 | 393.11 K | $7.93 M | -6.46% | 0.87% |
| HRT FINANCIAL LP | 08/14/2026 | 387.53 K | $7.82 M | 589.79% | 0.86% |
| DENALI ADVISORS LLC | 08/10/2026 | 375.97 K | $7.59 M | 41.09% | 0.83% |
| NORTHERN TRUST CORP | 08/13/2026 | 370.99 K | $7.49 M | -0.35% | 0.82% |
| BRIDGE CITY CAPITAL, LLC | 08/11/2026 | 338.71 K | $6.84 M | 1.08% | 0.75% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 08/14/2026 | 310.18 K | $6.26 M | -3.38% | 0.68% |
| SIXTH STREET PARTNERS MANAGEMENT COMPANY, L.P. | 08/14/2026 | 310.18 K | $6.26 M | 100.00% | 0.68% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 08/14/2026 | 298.95 K | $6.03 M | -9.53% | 0.66% |
| ROYCE & ASSOCIATES LP | 08/14/2026 | 294.76 K | $5.95 M | -27.43% | 0.65% |
| TWO SIGMA INVESTMENTS, LP | 08/14/2026 | 248.12 K | $5.01 M | 79.60% | 0.55% |
| FIRST TRUST ADVISORS LP | 08/11/2026 | 246.95 K | $4.98 M | 63.99% | 0.54% |
| PACER ADVISORS, INC. | 08/13/2026 | 241.18 K | $4.87 M | -7.76% | 0.53% |
| BANK OF NEW YORK MELLON CORP | 08/06/2026 | 232.34 K | $4.69 M | -4.47% | 0.51% |
| VANGUARD FIDUCIARY TRUST CO | 08/13/2026 | 224.48 K | $4.53 M | -2.84% | 0.50% |
| AQR CAPITAL MANAGEMENT LLC | 08/14/2026 | 208.65 K | $4.21 M | 164.86% | 0.46% |
| PRINCIPAL FINANCIAL GROUP INC | 08/04/2026 | 204.25 K | $4.12 M | -2.33% | 0.45% |
| NEW YORK STATE COMMON RETIREMENT FUND | 07/29/2026 | 181.12 K | $3.66 M | 21.79% | 0.40% |
| JANE STREET GROUP, LLC | 08/14/2026 | 178.73 K | $3.61 M | 93.28% | 0.39% |
| EMPOWERED FUNDS, LLC | 08/17/2026 | 162.81 K | $3.29 M | -10.21% | 0.36% |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 08/13/2026 | 159.43 K | $3.22 M | 53.40% | 0.35% |
| INVESCO LTD. | 08/14/2026 | 158.06 K | $3.19 M | -73.86% | 0.35% |
| VICTORY CAPITAL MANAGEMENT INC | 08/07/2026 | 149.61 K | $3.02 M | -40.06% | 0.33% |
| UNIVERSAL- BETEILIGUNGS- UND SERVICEGESELLSCHAFT MBH | 08/06/2026 | 139.40 K | $2.81 M | 0.00% | 0.31% |
| BANK OF AMERICA CORP /DE/ | 08/14/2026 | 136.82 K | $2.76 M | -21.51% | 0.30% |
| ALGERT GLOBAL LLC | 08/13/2026 | 131.40 K | $2.65 M | 110.71% | 0.29% |
| LAM GROUP, INC. | 07/10/2026 | 130.80 K | $2.64 M | 0.00% | 0.29% |
| NORDEA INVESTMENT MANAGEMENT AB | 08/05/2026 | 126.93 K | $2.56 M | 2.51% | 0.28% |
| BESSEMER GROUP INC | 08/12/2026 | 121.35 K | $2.45 M | -0.57% | 0.27% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 08/13/2026 | 116.65 K | $2.35 M | -64.14% | 0.26% |
| PUBLIC SECTOR PENSION INVESTMENT BOARD | 08/13/2026 | 116.65 K | $2.35 M | -7.84% | 0.26% |
| NUVEEN, LLC | 08/11/2026 | 88.40 K | $1.78 M | 15.41% | 0.20% |
| VANGUARD GLOBAL ADVISERS, LLC | 08/13/2026 | 87.64 K | $1.77 M | 74.71% | 0.19% |
| EXCHANGE TRADED CONCEPTS, LLC | 08/11/2026 | 87.05 K | $1.76 M | 5.63% | 0.19% |
| RHUMBLINE ADVISERS | 08/12/2026 | 80.45 K | $1.62 M | -3.90% | 0.18% |
| SQUAREPOINT OPS LLC | 08/14/2026 | 78.80 K | $1.59 M | 177.99% | 0.17% |
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Amphastar Pharmaceuticals Inc institutional Ownership - FAQ's
During the previous two years, 313 institutional investors and hedge funds held shares of Amphastar Pharmaceuticals Inc. The most heavily invested institutionals were:
BlackRock, Inc.: 5.22 M
DIMENSIONAL FUND ADVISORS LP: 2.31 M
STATE STREET CORP: 1.64 M
VANGUARD CAPITAL MANAGEMENT LLC: 1.48 M
AMERICAN CENTURY COMPANIES INC: 1.18 M
MARSHALL WACE, LLP: 1.07 M
63.11% of Amphastar Pharmaceuticals Inc stock is owned by institutional investors.
Institutional investors have bought a total of 45.77 M shares in the last 24 months. This purchase volume represents approximately $879.30 M in transactions.