Who owns Amphastar Pharmaceuticals?
- Ticker: AMPH
- CUSIP Number: 03209r103
Tip: Access positions for across all investors
Analyze quarterly positions in Amphastar Pharmaceuticals with up to 7 years of data, all consolidated into one spreadsheet
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Top investors of Amphastar Pharmaceuticals stock
Who bought or sold Amphastar Pharmaceuticals this quarter?
| Fund or Company Name | Shares Held | Valued At | Change in Shares | As Of | Actions |
|---|---|---|---|---|---|
| BlackRock | 5.5M | $146M | 0% | Dec 2025 |
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| Vanguard Group | 2.6M | $70M | -1% | Dec 2025 |
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| TD Asset Management | 2.0M | $53M | 2% | Dec 2025 |
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| Dimensional Fund Advisors | 1.8M | $48M | 3% | Dec 2025 |
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| State Street Corporation | 1.5M | $41M | 2% | Dec 2025 |
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| Hanna Zanoni | 1.4M | $37M | 3% | Dec 2025 |
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| Marshall Wace | 1.2M | $33M | 42% | Dec 2025 |
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| Epoch Investment Partners | 1.1M | $30M | -1% | Dec 2025 |
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| Btim | 1.1M | $29M | -7% | Dec 2025 |
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| Geode Capital Management | 887k | $24M | -4% | Dec 2025 |
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| Millennium Management | 698k | $19M | 13% | Sep 2025 |
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| American Century Companies | 665k | $18M | 131% | Dec 2025 |
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| Arrowstreet Capital, Limited Partnership | 559k | $15M | 43% | Dec 2025 |
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| Goldman Sachs Group | 557k | $15M | 131% | Dec 2025 |
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| Renaissance Technologies | 545k | $15M | -7% | Dec 2025 |
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| D. E. Shaw & Co | 517k | $14M | 76% | Sep 2025 |
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| Invesco | 501k | $13M | 29% | Dec 2025 |
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| Systematic Financial Management | 436k | $12M | 3% | Dec 2025 |
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| Algert Coldiron Investors | 393k | $11M | 216% | Sep 2025 |
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| Northern Trust | 371k | $9.9M | -7% | Dec 2025 |
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| Royce & Associates | 352k | $9.4M | -4% | Dec 2025 |
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| Charles Schwab Investment Management | 351k | $9.4M | -2% | Dec 2025 |
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| Hotchkis and Wiley Capital Management | 326k | $8.7M | -11% | Sep 2025 |
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| Bridgeway Capital Management | 312k | $8.3M | 267% | Sep 2025 |
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| Victory Capital Management | 305k | $8.2M | 44% | Dec 2025 |
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| Clark Capital Management Group | 284k | $7.6M | 100% | Sep 2025 |
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| Bank of New York Mellon | 259k | $6.9M | -3% | Dec 2025 |
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| UBS Group | 257k | $6.9M | -18% | Dec 2025 |
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| Citadel Advisors | 254k | $6.8M | -21% | Sep 2025 |
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| Jpmorgan Chase & Co | 253k | $6.7M | 100% | Sep 2025 |
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| Bridge City Capital | 236k | $6.3M | 73% | Dec 2025 |
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| Voloridge Investment Management | 231k | $6.2M | -21% | Dec 2025 |
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| Jane Street | 231k | $6.2M | 12% | Dec 2025 |
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| Principal Financial Group | 218k | $5.8M | 6% | Dec 2025 |
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| Denali Advisors | 212k | $5.7M | 57% | Dec 2025 |
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| Pacer Advisors | 178k | $4.8M | 2864% | Dec 2025 |
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| Empowered Funds | 166k | $4.4M | 11% | Dec 2025 |
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| Balyasny Asset Management | 142k | $3.8M | -47% | Sep 2025 |
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| First Trust Advisors | 140k | $3.8M | -7% | Dec 2025 |
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| Ameriprise Financial | 134k | $3.6M | 3% | Dec 2025 |
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| Lam Group | 131k | $3.5M | 0% | Dec 2025 |
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| Nordea Investment Management Ab | 129k | $3.5M | -16% | Dec 2025 |
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| New York State Common Retirement Fund | 126k | $3.4M | 40% | Dec 2025 |
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| Public Sector Pension Investment Board | 123k | $3.3M | -12% | Dec 2025 |
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| Rice Hall James & Associates | 121k | $3.2M | -6% | Dec 2025 |
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| Bnp Paribas Arbitrage, Snc | 121k | $3.2M | -46% | Dec 2025 |
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| Bessemer | 121k | $3.2M | 84438% | Dec 2025 |
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| Trexquant Investment | 114k | $3.0M | 100% | Dec 2025 |
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| Qube Research & Technologies | 111k | $3.0M | -54% | Dec 2025 |
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| LSV Asset Management | 110k | $3.0M | 50% | Dec 2025 |
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| Brandywine Global Investment Management | 105k | $2.8M | 100% | Dec 2025 |
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| Two Sigma Investments | 99k | $2.6M | 23% | Sep 2025 |
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| SG Americas Securities | 94k | $2.5M | 100% | Dec 2025 |
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| Quantedge Capital Pte | 92k | $2.5M | 103% | Dec 2025 |
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| Legal & General Group | 91k | $2.4M | -7% | Dec 2025 |
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| O'shaughnessy Asset Management | 87k | $2.3M | 26% | Dec 2025 |
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| Raymond James Financial | 85k | $2.3M | -29% | Dec 2025 |
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| Rhumbline Advisers | 82k | $2.2M | -9% | Dec 2025 |
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| Nuveen | 76k | $2.0M | -2% | Dec 2025 |
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| Barclays | 75k | $2.0M | 13% | Dec 2025 |
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| Swiss National Bank | 73k | $1.9M | 0% | Dec 2025 |
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| Susquehanna Portfolio Strategies | 67k | $1.8M | 69% | Dec 2025 |
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| CX Institutional | 64k | $1.7M | 1% | Dec 2025 |
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| Intech Investment Management | 63k | $1.7M | 24% | Dec 2025 |
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| CIBC World Markets | 62k | $1.7M | 100% | Dec 2025 |
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| AQR Capital Management | 62k | $1.7M | -18% | Sep 2025 |
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| Steel Peak Wealth Management | 56k | $1.5M | 0% | Dec 2025 |
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| Ubs Global Asset Management Americas | 55k | $1.5M | 2% | Dec 2025 |
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| Assetmark | 54k | $1.5M | -4% | Dec 2025 |
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| Creative Planning | 52k | $1.4M | -6% | Dec 2025 |
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| Alliancebernstein | 51k | $1.3M | 0% | Sep 2025 |
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| Royal Bank of Canada | 50k | $1.3M | -84% | Sep 2025 |
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| XTX Topco | 49k | $1.3M | 100% | Dec 2025 |
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| Prudential Financial | 47k | $1.3M | 0% | Dec 2025 |
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| Wells Fargo & Company | 45k | $1.2M | 58% | Dec 2025 |
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| SummerHaven Investment Management | 38k | $1.0M | 0% | Dec 2025 |
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| California State Teachers Retirement System | 36k | $959k | 0% | Dec 2025 |
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| Polaris Capital Management | 36k | $952k | 171% | Dec 2025 |
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| Campbell & Co. Investment Adviser | 31k | $822k | -30% | Dec 2025 |
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| Great-West Life Assurance Company | 30k | $809k | 0% | Dec 2025 |
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| Deutsche Bank Aktiengesellschaft | 30k | $792k | 4% | Dec 2025 |
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| Universal- Beteiligungs- und Servicegesellschaft mbH | 29k | $785k | 100% | Dec 2025 |
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| Envestnet Asset Management | 29k | $772k | 31% | Dec 2025 |
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| Illumine Investment Management | 28k | $759k | 2% | Dec 2025 |
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| Alaska Retirement Management Board | 28k | $745k | 34% | Dec 2025 |
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| Freestone Grove Partners | 28k | $739k | 100% | Dec 2025 |
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| Legato Capital Management | 27k | $712k | -26% | Dec 2025 |
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| Arkadios Wealth Advisors | 26k | $704k | -27% | Dec 2025 |
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| Franklin Resources | 26k | $697k | 173% | Dec 2025 |
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| Advisor OS | 25k | $680k | 0% | Dec 2025 |
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| Thrivent Financial for Lutherans | 24k | $651k | -6% | Dec 2025 |
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| Federated Investors | 24k | $630k | 100% | Dec 2025 |
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| New York State Teachers Retirement System | 23k | $615k | -2% | Dec 2025 |
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| Two Sigma Advisers | 23k | $608k | -76% | Sep 2025 |
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| MetLife Investment Advisors | 21k | $564k | -9% | Dec 2025 |
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| Illinois Municipal Retirement Fund | 21k | $560k | 1% | Dec 2025 |
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| DekaBank Deutsche Girozentrale | 21k | $953k | 0% | Dec 2025 |
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| Canada Pension Plan Investment Board | 21k | $552k | 393% | Sep 2025 |
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| Round Rock Advisors | 21k | $548k | 139% | Dec 2025 |
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| Vident Advisory | 20k | $547k | 11% | Dec 2025 |
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| LPL Financial | 20k | $531k | 36% | Dec 2025 |
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| Thomas Stevens, CFA" | 19k | $478k | 2% | Dec 2025 |
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| State of Wisconsin Investment Board | 18k | $469k | -18% | Dec 2025 |
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| Wellington Management Company | 17k | $458k | 10% | Sep 2025 |
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| Mirae Asset Global Etfs Holdings | 17k | $452k | -2% | Dec 2025 |
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| Henderson Group | 17k | $449k | 100% | Sep 2025 |
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| Sterling Capital Management | 17k | $445k | 42% | Dec 2025 |
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| ALPS Advisors | 16k | $440k | 1% | Dec 2025 |
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| Manufacturers Life Insurance Company | 16k | $439k | -8% | Dec 2025 |
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| Vestcor Investment Management Corp | 16k | $439k | 75% | Dec 2025 |
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| Louisiana State Employees Retirement System | 16k | $434k | -2% | Dec 2025 |
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| Quantinno Capital Management | 16k | $417k | 17% | Dec 2025 |
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| Gotham Asset Management | 15k | $410k | 10% | Sep 2025 |
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| CI Private Wealth | 15k | $411k | -2% | Dec 2025 |
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| Assenagon Asset Management | 15k | $408k | 0% | Dec 2025 |
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| Advisory Research | 15k | $406k | -2% | Dec 2025 |
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| ExodusPoint Capital Management | 15k | $400k | 100% | Dec 2025 |
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| Squarepoint Ops | 15k | $398k | -70% | Dec 2025 |
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| Deerfield Management Company | 15k | $398k | 100% | Dec 2025 |
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| Mml Investors Services | 15k | $393k | 73% | Dec 2025 |
|
| Sei Investments | 15k | $392k | 22% | Dec 2025 |
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| Quantbot Technologies | 15k | $389k | -51% | Dec 2025 |
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| Janney Montgomery Scott | 14k | $381k | 6% | Dec 2025 |
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| Man Group | 14k | $379k | -56% | Dec 2025 |
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| Brevan Howard Capital Management | 14k | $360k | -72% | Sep 2025 |
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| Advisor Group Holdings | 13k | $344k | -59% | Dec 2025 |
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| Martingale Asset Management | 12k | $332k | -33% | Dec 2025 |
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| Virginia Retirement System | 12k | $331k | -9% | Dec 2025 |
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| Cim | 11k | $304k | -2% | Dec 2025 |
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| Segall Bryant & Hamill | 11k | $300k | 0% | Dec 2025 |
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| ProFund Advisors | 11k | $298k | 36% | Dec 2025 |
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| Florida State Board of Administration | 11k | $292k | 0% | Dec 2025 |
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| JustInvest | 11k | $280k | -5% | Dec 2025 |
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| Arizona State Retirement System | 10k | $279k | -6% | Dec 2025 |
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| Amalgamated Bank | 10k | $279k | -1% | Dec 2025 |
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| Police & Firemen's Retirement System of New Jersey | 10k | $275k | 0% | Dec 2025 |
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| Significant Wealth Partners | 9.6k | $258k | -53% | Dec 2025 |
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| Exchange Traded Concepts | 9.4k | $252k | -6% | Dec 2025 |
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| Acadian Asset Management | 9.3k | $249k | -79% | Dec 2025 |
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| Ameritas Advisory Services | 9.2k | $246k | 100% | Dec 2025 |
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| ProShare Advisors | 9.1k | $243k | 5% | Dec 2025 |
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| Teachers Retirement System Of The State Of Kentucky | 9.1k | $242k | -14% | Dec 2025 |
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| Commonwealth of Pennsylvania | 8.8k | $235k | -4% | Dec 2025 |
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| Commonwealth Equity Services | 8.7k | $234k | 11% | Dec 2025 |
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| Yousif Capital Management | 8.7k | $226k | -6% | Dec 2025 |
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| State of Tennessee, Treasury Department | 8.6k | $228k | -7% | Dec 2025 |
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| Brian McDonald | 8.5k | $227k | -10% | Dec 2025 |
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| Oregon Public Employees Retirement Fund | 8.1k | $218k | 1% | Dec 2025 |
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| Susquehanna International | 8.1k | $218k | 100% | Dec 2025 |
|
| Quest Partners | 7.7k | $207k | -10% | Dec 2025 |
|
| China Universal Asset Management | 7.5k | $201k | -8% | Dec 2025 |
|
Who sold out of Amphastar Pharmaceuticals?
| Fund or Company Name | Date Sold | Shares Held | Valued At |
|---|---|---|---|
| Leucadia National Corporation | Sep 2025 | 89k | $2.4M |
| Hrt Financial | Sep 2025 | 78k | $2.1M |
| Capital Fund Management | Jun 2025 | 41k | $932k |
| Y-Intercept | Sep 2025 | 25k | $669k |
| Danske Bank A/s | Sep 2025 | 23k | $614k |
| Lighthouse Investment Partners | Sep 2025 | 22k | $576k |
| Cynosure Management | Sep 2025 | 18k | $475k |
| Jackson Creek Investment Advisors | Sep 2025 | 15k | $393k |
| PDT Partners | Sep 2025 | 15k | $390k |
| Handelsbanken Fonder AB | Sep 2025 | 14k | $384k |
| Magnetar Financial | Jun 2025 | 13k | $306k |
| Tudor Investment Corporation | Jun 2025 | 13k | $297k |
| Susquehanna Fundamental Investments | Sep 2025 | 13k | $335k |
| Hohimer Wealth Management | Sep 2025 | 12k | $319k |
| Teacher Retirement System Of Texas | Sep 2025 | 9.4k | $249k |