Amphastar Pharmaceuticals Inc Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| BLACKROCK, INC. | 02/12/2026 | 5.46 M | $146.27 M | -0.42% | 11.75% |
| VANGUARD GROUP INC | 01/29/2026 | 2.61 M | $69.85 M | -0.87% | 5.61% |
| TD ASSET MANAGEMENT INC | 02/10/2026 | 1.96 M | $52.57 M | 1.61% | 4.22% |
| DIMENSIONAL FUND ADVISORS LP | 02/12/2026 | 1.80 M | $48.20 M | 2.51% | 3.87% |
| STATE STREET CORP | 02/13/2026 | 1.53 M | $41.02 M | 2.07% | 3.30% |
| FULLER & THALER ASSET MANAGEMENT, INC. | 02/18/2026 | 1.39 M | $37.34 M | 2.99% | 3.00% |
| MARSHALL WACE, LLP | 02/13/2026 | 1.24 M | $33.13 M | 41.55% | 2.66% |
| EPOCH INVESTMENT PARTNERS, INC. | 02/13/2026 | 1.13 M | $30.17 M | -0.65% | 2.42% |
| BOSTON TRUST WALDEN CORP | 01/28/2026 | 1.09 M | $29.12 M | -7.32% | 2.34% |
| GEODE CAPITAL MANAGEMENT, LLC | 02/09/2026 | 886.83 K | $23.75 M | -3.88% | 1.91% |
| AMERICAN CENTURY COMPANIES INC | 02/13/2026 | 665.34 K | $17.82 M | 130.55% | 1.43% |
| MORGAN STANLEY | 02/13/2026 | 591.63 K | $15.84 M | 2.95% | 1.27% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 02/13/2026 | 559.43 K | $14.98 M | 42.60% | 1.20% |
| D. E. SHAW & CO., INC. | 02/17/2026 | 557.07 K | $14.92 M | 7.70% | 1.20% |
| GOLDMAN SACHS GROUP INC | 03/25/2026 | 556.71 K | $14.91 M | 130.78% | 1.20% |
| RENAISSANCE TECHNOLOGIES LLC | 02/12/2026 | 544.70 K | $14.59 M | -7.19% | 1.17% |
| INVESCO LTD. | 02/19/2026 | 501.40 K | $13.43 M | 28.70% | 1.08% |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | 02/09/2026 | 435.58 K | $11.66 M | 2.95% | 0.94% |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 02/17/2026 | 402.56 K | $10.78 M | 23.42% | 0.87% |
| NORTHERN TRUST CORP | 02/17/2026 | 371.39 K | $9.95 M | -7.03% | 0.80% |
| ROYCE & ASSOCIATES LP | 02/09/2026 | 352.30 K | $9.43 M | -3.83% | 0.76% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 02/13/2026 | 350.71 K | $9.39 M | -1.60% | 0.75% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 02/17/2026 | 323.55 K | $8.66 M | 3.59% | 0.70% |
| CLARK CAPITAL MANAGEMENT GROUP, INC. | 02/17/2026 | 317.48 K | $8.50 M | 11.92% | 0.68% |
| VICTORY CAPITAL MANAGEMENT INC | 02/13/2026 | 305.16 K | $8.17 M | 44.08% | 0.66% |
| MILLENNIUM MANAGEMENT LLC | 02/17/2026 | 290.67 K | $7.78 M | -58.34% | 0.63% |
| BANK OF NEW YORK MELLON CORP | 02/10/2026 | 259.06 K | $6.94 M | -3.27% | 0.56% |
| UBS GROUP AG | 01/29/2026 | 256.62 K | $6.87 M | -17.82% | 0.55% |
| BRIDGE CITY CAPITAL, LLC | 02/13/2026 | 235.49 K | $6.31 M | 72.82% | 0.51% |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 02/17/2026 | 231.31 K | $6.19 M | -20.91% | 0.50% |
| CITADEL ADVISORS LLC | 02/17/2026 | 228.72 K | $6.13 M | 0.86% | 0.49% |
| PRINCIPAL FINANCIAL GROUP INC | 02/02/2026 | 217.97 K | $5.84 M | 5.98% | 0.47% |
| JANE STREET GROUP, LLC | 02/12/2026 | 217.54 K | $5.83 M | 46.53% | 0.47% |
| DENALI ADVISORS LLC | 02/03/2026 | 211.77 K | $5.67 M | 56.86% | 0.46% |
| PACER ADVISORS, INC. | 02/24/2026 | 177.74 K | $4.76 M | 2,864.38% | 0.38% |
| EMPOWERED FUNDS, LLC | 02/18/2026 | 165.91 K | $4.44 M | 10.76% | 0.36% |
| JPMORGAN CHASE & CO | 02/11/2026 | 158.64 K | $4.25 M | -37.35% | 0.34% |
| FIRST TRUST ADVISORS LP | 02/13/2026 | 140.31 K | $3.76 M | -6.72% | 0.30% |
| AMERIPRISE FINANCIAL INC | 02/17/2026 | 133.72 K | $3.58 M | 2.98% | 0.29% |
| LAM GROUP, INC. | 01/23/2026 | 130.80 K | $3.50 M | 0.00% | 0.28% |
| NORDEA INVESTMENT MANAGEMENT AB | 01/08/2026 | 129.14 K | $3.46 M | -15.79% | 0.28% |
| BANK OF AMERICA CORP /DE/ | 02/17/2026 | 128.17 K | $3.43 M | 0.85% | 0.28% |
| NEW YORK STATE COMMON RETIREMENT FUND | 02/12/2026 | 125.97 K | $3.37 M | 39.70% | 0.27% |
| ALGERT GLOBAL LLC | 02/17/2026 | 125.13 K | $3.35 M | -68.15% | 0.27% |
| PUBLIC SECTOR PENSION INVESTMENT BOARD | 02/13/2026 | 122.51 K | $3.28 M | -12.29% | 0.26% |
| RICE HALL JAMES & ASSOCIATES, LLC | 02/17/2026 | 121.18 K | $3.25 M | -6.31% | 0.26% |
| BNP PARIBAS ARBITRAGE, SNC | 02/10/2026 | 120.89 K | $3.24 M | -45.55% | 0.26% |
| BESSEMER GROUP INC | 02/05/2026 | 120.89 K | $3.24 M | 84,438.46% | 0.26% |
| TREXQUANT INVESTMENT LP | 02/17/2026 | 113.67 K | $3.04 M | 100.00% | 0.24% |
| QUBE RESEARCH & TECHNOLOGIES LTD | 02/17/2026 | 111.44 K | $2.98 M | -53.80% | 0.24% |
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Amphastar Pharmaceuticals Inc institutional Ownership - FAQ's
During the previous two years, 331 institutional investors and hedge funds held shares of Amphastar Pharmaceuticals Inc. The most heavily invested institutionals were:
DIMENSIONAL FUND ADVISORS LP: 2.03 M
TD ASSET MANAGEMENT INC: 1.54 M
Boston Trust Walden Corp: 944,789
LSV ASSET MANAGEMENT: 651,714
Invesco Ltd.: 604,774
UBS Group AG: 420,263
72.25% of Amphastar Pharmaceuticals Inc stock is owned by institutional investors.
Institutional investors have bought a total of 50.69 M shares in the last 24 months. This purchase volume represents approximately $973.75 M in transactions.