Amphastar PharmaceuticalsAMPH
13F holders, Q2 2025 (June 30)245holders +4
42new positions
40sold out
7famous investors
$22.98avg. 13F price*
At the end of Q2 2025, 245 institutions reported holding Amphastar Pharmaceuticals Inc. (AMPH) in their 13F filings, up 4 from Q1 2025. 42 opened new positions and 40 sold out. The largest holders were BlackRock, Inc. ($130.2M), Vanguard Group Inc. ($61.7M) and TD Asset Management Inc ($46.7M). 7 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Amphastar Pharmaceuticals Inc.
- CUSIP
- 03209R103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 42 | $17.1M |
| Exits | 40 | $41.2M |
All 13F filers, Q1 2025 → Q2 2025: 4,136,244 shares bought and 4,655,640 shares sold, net −519,396 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 245 holders
| BlackRock, Inc. | 0.00% | Reduce -7.8% | 5,668,793 | $130.2M |
| Vanguard Group Inc. | 0.00% | Add +10.9% | 2,686,950 | $61.7M |
| TD Asset Management Inc | 0.04% | Reduce -8.0% | 2,034,930 | $46.7M |
| Dimensional Fund Advisors LP | 0.01% | Add +19.9% | 1,626,884 | $37.4M |
| State Street Corp. | 0.00% | Reduce -1.8% | 1,576,233 | $36.2M |
| Fuller & Thaler Asset Management, Inc. | 0.11% | Add +0.0% | 1,263,772 | $29.0M |
| Epoch Investment Partners, Inc. | 0.15% | Reduce -1.6% | 1,241,369 | $28.5M |
| Boston Trust Walden Corp | 0.19% | Reduce -3.2% | 1,176,453 | $27.0M |
| Geode Capital Management, LLC | 0.00% | Add +1.9% | 973,237 | $22.3M |
| Marshall Wace, LLP | 0.02% | Reduce -17.7% | 848,685 | $19.5M |
| Morgan Stanley | 0.00% | Add +30.5% | 681,222 | $15.6M |
| Millennium Management | 0.01% | Reduce -28.7% | 618,984 | $14.2M |
| Renaissance Technologies | 0.02% | Add +16.5% | 576,500 | $13.2M |
| Qube Research & Technologies Ltd | 0.01% | Add +81.3% | 469,492 | $10.8M |
| Northern Trust Corp. | 0.00% | Reduce -29.1% | 421,136 | $9.7M |
| Invesco Ltd. | 0.00% | Add +7.8% | 386,971 | $8.9M |
| Hotchkis & Wiley Capital Management LLC | 0.03% | Add +35.5% | 365,920 | $8.4M |
| Systematic Financial Management LP | 0.22% | Add +10.0% | 359,307 | $8.2M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -12.4% | 356,250 | $8.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +6.3% | 346,784 | $8.0M |
| Pacer Advisors, Inc. | 0.02% | Reduce -32.0% | 326,098 | $7.5M |
| Voloridge Investment Management, LLC | 0.03% | Add +50.7% | 325,512 | $7.5M |
| Royal Bank of Canada | 0.00% | Add +1122.1% | 318,717 | $7.3M |
| Bank of New York Mellon Corp | 0.00% | Add +18.3% | 314,803 | $7.2M |
| D. E. Shaw & Co. | 0.01% | Add +907.0% | 293,928 | $6.7M |
| Citadel Advisors | 0.01% | Add +87.4% | 292,345 | $6.7M |
| Royce & Associates LP | 0.07% | Add +14.3% | 283,187 | $6.5M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -49.5% | 273,288 | $6.3M |
| Balyasny Asset Management L.P. | 0.01% | Add +64.3% | 266,306 | $6.1M |
| CX Institutional | 0.21% | Add +220.5% | 263,283 | $6.0M |
| American Century Companies Inc. | 0.00% | Reduce -24.3% | 233,161 | $5.4M |
| Principal Financial Group Inc. | 0.00% | Add +3.0% | 219,042 | $5.0M |
| Ameriprise Financial Inc. | 0.00% | Add +9.5% | 169,849 | $3.9M |
| Jane Street Group, LLC | 0.01% | Add +243.1% | 160,082 | $3.7M |
| JPMorgan Chase & Co. | 0.00% | Add +136.4% | 158,114 | $3.6M |
| Trexquant Investment LP | 0.04% | Add +70.0% | 155,229 | $3.6M |
| Nordea Investment Management AB | 0.00% | Add +0.7% | 152,015 | $3.5M |
| Bank of America Corp. | 0.00% | Add +36.0% | 145,125 | $3.3M |
| Bridge City Capital, LLC | 0.89% | Add +19.7% | 138,644 | $3.2M |
| Lam Group, Inc. | 2.01% | No change | 130,800 | $3.0M |
| Public Sector Pension Investment Board | 0.01% | Add +5.5% | 125,363 | $2.9M |
| Algert Global LLC | 0.06% | Add +618.4% | 124,290 | $2.9M |
| Raymond James Financial Inc. | 0.00% | Add +294.7% | 117,119 | $2.7M |
| Susquehanna Fundamental Investments, LLC | 0.06% | Reduce -11.8% | 101,553 | $2.3M |
| Legal & General Group Plc | 0.00% | Reduce -0.4% | 101,154 | $2.3M |
| Rhumbline Advisers | 0.00% | Add +7.1% | 95,287 | $2.2M |
| Two Sigma Advisers, LP | 0.00% | Add +12.4% | 95,200 | $2.2M |
| First Trust Advisors LP | 0.00% | Add +428.3% | 94,305 | $2.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +18.4% | 93,652 | $2.2M |
| Twinbeech Capital LP | 0.05% | Add +101.3% | 88,530 | $2.0M |
| Bridgeway Capital Management, LLC | 0.05% | New | 85,112 | $2.0M |
| Empowered Funds, LLC | 0.02% | New | 85,112 | $2.0M |
| Barclays PLC | 0.00% | Add +22.6% | 82,087 | $1.9M |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 81,239 | $1.9M |
| Nuveen, LLC | 0.00% | Reduce -15.2% | 81,142 | $1.9M |
| Two Sigma Investments, LP | 0.00% | Add +6.4% | 80,130 | $1.8M |
| Victory Capital Management Inc. | 0.00% | Reduce -5.2% | 76,862 | $1.8M |
| Prudential Financial Inc. | 0.00% | Add +11.5% | 41,951 | $1.7M |
| AQR Capital Management | 0.00% | Add +41.4% | 75,845 | $1.7M |
| Swiss National Bank | 0.00% | Reduce -2.5% | 72,600 | $1.7M |
| BNP Paribas Financial Markets | 0.00% | Add +802.3% | 71,689 | $1.6M |
| UBS Group AG | 0.00% | Reduce -25.2% | 66,834 | $1.5M |
| Jump Financial, LLC | 0.02% | New | 63,334 | $1.5M |
| Quantbot Technologies LP | 0.04% | Add +188.8% | 60,955 | $1.4M |
| Gsa Capital Partners LLP | 0.09% | Add +26.0% | 57,057 | $1.3M |
| SteelPeak Wealth, LLC | 0.05% | No change | 55,795 | $1.3M |
| Susquehanna International Group, LLP | 0.00% | Reduce -22.8% | 54,598 | $1.3M |
| Engineers Gate Manager LP | 0.02% | Add +38.4% | 53,348 | $1.2M |
| Aurora Investment Counsel | 0.64% | Reduce -1.5% | 53,253 | $1.2M |
| Intech Investment Management LLC | 0.01% | Reduce -15.3% | 51,071 | $1.2M |
| Alliancebernstein L.P. | 0.00% | No change | 50,630 | $1.2M |
| Brevan Howard Capital Management LP | 0.01% | Add +469.8% | 48,920 | $1.1M |
| New York State Common Retirement Fund | 0.00% | Reduce -40.7% | 48,369 | $1.1M |
| Assetmark, Inc. | 0.00% | Add +8.0% | 43,766 | $1.0M |
| LSV Asset Management | 0.00% | No change | 43,200 | $992K |
| Creative Planning | 0.00% | Add +111.8% | 42,620 | $979K |
| Citigroup Inc. | 0.00% | Reduce -45.7% | 42,220 | $969K |
| HRT Financial LP | 0.00% | Reduce -51.3% | 42,080 | $966K |
| Capital Fund Management S.A. | 0.01% | New | 40,570 | $931K |
| O'shaughnessy Asset Management, LLC | 0.01% | New | 40,309 | $925K |
| Susquehanna Portfolio Strategies, LLC | 0.02% | New | 39,564 | $908K |
| Edgestream Partners, L.P. | 0.02% | New | 37,112 | $852K |
| Legato Capital Management LLC | 0.10% | Add +21.4% | 36,060 | $828K |
| California State Teachers Retirement System | 0.00% | Reduce -1.4% | 35,877 | $824K |
| Arkadios Wealth Advisors | 0.02% | Add +3.5% | 35,163 | $807K |
| Polaris Capital Management, LLC | 0.05% | Add +14.0% | 35,100 | $806K |
| Aristeia Capital, L.L.C. | 0.04% | No change | 33,835 | $777K |
| Dynamic Technology Lab Private Ltd | 0.10% | New | 33,300 | $765K |
| ExodusPoint Capital Management, LP | 0.01% | Reduce -90.5% | 32,444 | $745K |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -3.4% | 30,216 | $694K |
| Danske Bank A/S | 0.00% | New | 29,898 | $686K |
| AlphaQuest LLC | 0.07% | Add +149.1% | 28,882 | $663K |
| Illumine Investment Management, LLC | 0.50% | Add +2.3% | 27,126 | $623K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -1.9% | 27,036 | $621K |
| Advisor OS, LLC | 0.06% | No change | 25,405 | $583K |
| State of Wisconsin Investment Board | 0.00% | Reduce -1.0% | 25,332 | $582K |
| Deutsche Bank AG | 0.00% | Reduce -18.5% | 25,178 | $578K |
| Martingale Asset Management L P | 0.01% | No change | 24,542 | $563K |
| SG Americas Securities, LLC | 0.00% | New | 24,448 | $561K |
| Wells Fargo & Company | 0.00% | Reduce -16.9% | 24,396 | $560K |
| Centiva Capital, LP | 0.04% | New | 24,161 | $555K |
| New York State Teachers Retirement System | 0.00% | Reduce -0.6% | 23,732 | $545K |
| MetLife Investment Management, LLC | 0.00% | No change | 23,093 | $530K |
| Squarepoint Ops LLC | 0.00% | Reduce -67.0% | 23,026 | $529K |
| Campbell & CO Investment Adviser LLC | 0.03% | Reduce -51.0% | 22,433 | $515K |
| State of Alaska, Department of Revenue | 0.01% | Add +5.3% | 21,892 | $502K |
| Fox Run Management, L.L.C. | 0.08% | New | 21,199 | $487K |
| Aquatic Capital Management LLC | 0.01% | New | 21,195 | $487K |
| DekaBank Deutsche Girozentrale | 0.00% | No change | 20,848 | $475K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -9.6% | 20,338 | $467K |
| Man Group plc | 0.00% | Reduce -46.9% | 20,300 | $466K |
| Graham Capital Management, L.P. | 0.01% | Reduce -23.2% | 20,288 | $466K |
| Illinois Municipal Retirement Fund | 0.01% | Reduce -2.0% | 19,937 | $458K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -5.7% | 18,688 | $429K |
| Voya Investment Management LLC | 0.00% | Reduce -0.2% | 18,099 | $416K |
| Cynosure Group, LLC | 0.05% | Add +43.7% | 17,820 | $409K |
| Y-Intercept (Hong Kong) Ltd | 0.01% | New | 17,727 | $407K |
| Vident Advisory, LLC | 0.00% | New | 17,279 | $397K |
| Louisiana State Employees Retirement System | 0.01% | Reduce -2.8% | 17,200 | $395K |
| Janus Henderson Group PLC | 0.00% | Reduce -86.4% | 16,868 | $387K |
| Assenagon Asset Management S.A. | 0.00% | Add +9.2% | 16,610 | $381K |
| Significant Wealth Partners LLC | 0.18% | Add +58.4% | 16,178 | $371K |
| Occudo Quantitative Strategies LP | 0.04% | New | 15,774 | $362K |
| Wellington Management Group LLP | 0.00% | Reduce -7.7% | 15,618 | $359K |
| Osaic Holdings, Inc. | 0.00% | Reduce -5.6% | 15,236 | $357K |
| Advisory Research Inc. | 0.05% | Add +7.3% | 14,898 | $342K |
| PDT Partners, LLC | 0.02% | New | 14,630 | $336K |
| Handelsbanken Fonder AB | 0.00% | No change | 14,400 | $331K |
| Gotham Asset Management | 0.00% | Add +28.9% | 14,014 | $322K |
| Magnetar Financial LLC | 0.00% | New | 13,337 | $306K |
| Tudor Investment Corporation | 0.00% | Reduce -40.7% | 12,916 | $297K |
| Sei Investments Co. | 0.00% | Add +32.1% | 12,672 | $291K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Add +62.5% | 12,624 | $290K |
| Hohimer Wealth Management, LLC | 0.05% | Add +48.0% | 11,845 | $272K |
| Bank of Montreal | 0.00% | Add +43.7% | 11,790 | $271K |
| Teachers Retirement System of the State of Kentucky | 0.00% | No change | 11,691 | $268K |
| Comerica Bank | 0.00% | Reduce -0.1% | 11,553 | $265K |
| Cim, LLC | 0.04% | Add +15.6% | 11,429 | $262K |
| Quantinno Capital Management LP | 0.00% | New | 11,269 | $259K |
| Federated Hermes, Inc. | 0.00% | Reduce -98.1% | 11,224 | $258K |
| Segall Bryant & Hamill, LLC | 0.00% | No change | 11,185 | $257K |
| Arizona State Retirement System | 0.00% | Add +0.7% | 11,090 | $255K |
| Yousif Capital Management, LLC | 0.00% | Reduce -0.3% | 11,078 | $254K |
| Maryland State Retirement & Pension System | 0.01% | No change | 10,936 | $251K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 10,913 | $251K |
| Amalgamated Bank | 0.00% | Reduce -2.0% | 10,549 | $242K |
| Schonfeld Strategic Advisors LLC | 0.00% | New | 10,340 | $237K |
| Teacher Retirement System of Texas | 0.00% | Reduce -1.0% | 10,251 | $235K |
| Sterling Capital Management LLC | 0.00% | Add +9.6% | 10,217 | $235K |
| ProShare Advisors LLC | 0.00% | Reduce -9.4% | 10,039 | $230K |
| Exchange Traded Concepts, LLC | 0.00% | Add +10.9% | 9,831 | $226K |
| Profund Advisors LLC | 0.01% | Reduce -14.4% | 9,638 | $221K |
| Deerfield Management Company, L.P. | 0.00% | New | 9,579 | $220K |
| China Universal Asset Management Co., Ltd. | 0.02% | Reduce -1.8% | 9,468 | $217K |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.00% | Add +5.2% | 9,440 | $217K |
| Vestcor Inc | 0.01% | No change | 9,383 | $215K |
| State of Tennessee, Department of Treasury | 0.00% | No change | 9,300 | $214K |
| VIRGINIA RETIREMENT SYSTEMS ET Al | 0.00% | Reduce -8.4% | 8,762 | $201K |
| Oregon Public Employees Retirement Fund | 0.00% | Reduce -1.2% | 8,442 | $194K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 8,288 | $190K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 7,504 | $172K |
| KLP Kapitalforvaltning As | 0.00% | No change | 7,400 | $170K |
| FMR LLC | 0.00% | Add +49.9% | 7,203 | $165K |
| PNC Financial Services Group, Inc. | 0.00% | Add +35.5% | 6,483 | $149K |
| Lazard Asset Management LLC | 0.00% | New | 6,344 | $145K |
| Oakworth Capital, Inc. | 0.01% | No change | 6,000 | $138K |
| Public Employees Retirement Association of Colorado | 0.00% | No change | 5,265 | $121K |
| Cwm, LLC | 0.00% | Add +574.0% | 4,502 | $103K |
| Canada Pension Plan Investment Board | 0.00% | Add +55.6% | 4,200 | $96K |
| Shell Asset Management Co. | 0.00% | Reduce -9.9% | 4,173 | $96K |
| Brooklyn Investment Group | 0.01% | Add +2435.6% | 3,778 | $87K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 3,762 | $86K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +263.0% | 3,583 | $82K |
| State of Wyoming | 0.01% | Reduce -44.0% | 2,723 | $63K |
| IFP Advisors, Inc | 0.00% | Add +75.7% | 2,035 | $52K |
| GAMMA Investing LLC | 0.00% | Add +62.2% | 2,162 | $50K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +13.2% | 1,821 | $42K |
| Blue Trust, Inc. | 0.00% | Add +21.7% | 1,776 | $41K |
| TD Private Client Wealth LLC | 0.00% | Reduce -1.9% | 1,695 | $39K |
| Allworth Financial LP | 0.00% | Reduce -1.3% | 1,545 | $35K |
| Hantz Financial Services, Inc. | 0.00% | Add +3430.8% | 1,377 | $32K |
| Simplex Trading, LLC | 0.00% | New | 1,379 | $31K |
| Signaturefd, LLC | 0.00% | Add +45.9% | 1,272 | $29K |
| MassMutual Private Wealth & Trust, FSB | 0.00% | Add +192.8% | 1,262 | $29K |
| GF Fund Management Co. LTD. | 0.00% | No change | 1,230 | $28K |
| Leonteq Securities AG | 0.00% | No change | 1,000 | $23K |
| Pinnacle Financial Partners Inc | 0.00% | No change | 1,000 | $23K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -59.4% | 835 | $19K |
| CIBC Private Wealth Group LLC | 0.00% | Reduce -9.5% | 721 | $17K |
| 1620 Investment Advisors, Inc. | 0.01% | Reduce -70.0% | 682 | $16K |
| Versant Capital Management, Inc | 0.00% | Add +75.3% | 624 | $14K |
| Fifth Third Bancorp | 0.00% | Add +29.0% | 480 | $11K |
| US Bancorp \de | 0.00% | Add +7.2% | 431 | $10K |
| Public Employees Retirement System of Ohio | 0.00% | Add +16.0% | 414 | $10K |
| Nisa Investment Advisors, LLC | 0.00% | Reduce -69.4% | 374 | $9K |
| Caitong International Asset Management Co., Ltd | 0.01% | Add +202.4% | 372 | $9K |
| Jones Financial Companies LLLP | 0.00% | Add +180.2% | 367 | $8K |
| Global Retirement Partners, LLC | 0.00% | — | 321 | $7K |
| Truvestments Capital LLC | 0.00% | No change | 317 | $7K |
| Parallel Advisors, LLC | 0.00% | Add +420.7% | 302 | $7K |
| Harbour Investments, Inc. | 0.00% | No change | 270 | $6K |
| Harbor Capital Advisors, Inc. | 0.00% | Add +17.2% | 266 | $6K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +6375.0% | 259 | $6K |
| Huntington National Bank | 0.00% | Reduce -59.5% | 253 | $6K |
| Bessemer Group Inc. | 0.00% | Reduce -64.3% | 200 | $5K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.00% | New | 199 | $5K |
| Spire Wealth Management | 0.00% | No change | 212 | $5K |
| WealthCollab, LLC | 0.00% | New | 207 | $5K |
| Farther Finance Advisors, LLC | 0.00% | Add +53.3% | 207 | $5K |
| Smartleaf Asset Management LLC | 0.00% | Reduce -66.3% | 191 | $4K |
| MAI Capital Management | 0.00% | New | 186 | $4K |
| Private Wealth Management Group, LLC | 0.00% | Add +795.0% | 179 | $4K |
| Daiwa Securities Group Inc. | 0.00% | No change | 185 | $4K |
| Essential Partners LLC | 0.00% | — | 156 | $4K |
| City State Bank | 0.00% | No change | 150 | $3K |
| Parkside Financial Bank & Trust | 0.00% | Reduce -86.5% | 136 | $3K |
| TD Waterhouse Canada Inc. | 0.00% | New | 100 | $2K |
| Rothschild Investment LLC | 0.00% | Add +58.3% | 95 | $2K |
| Covestor Ltd | 0.00% | Reduce -77.8% | 66 | $2K |
| Arax Advisory Partners | 0.00% | New | 81 | $2K |
| Anchor Investment Management, LLC | 0.00% | Reduce -50.0% | 75 | $2K |
| Northwestern Mutual Wealth Management Co. | 0.00% | New | 62 | $1K |
| CoreCap Advisors, LLC | 0.00% | No change | 59 | $1K |
| First Horizon Advisors, Inc. | 0.00% | New | 58 | $1K |
| Private Trust Co. NA | 0.00% | New | 49 | $1K |
| Avion Wealth | 0.00% | New | 60 | $1K |
| Picton Mahoney Asset Management | 0.00% | Reduce -98.5% | 24 | $1K |
| Physician Wealth Advisors, Inc. | 0.00% | New | 41 | $942 |
| SBI Securities Co., Ltd. | 0.00% | No change | 40 | $918 |
| Clearstead Trust, LLC | 0.00% | New | 33 | $758 |
| Farmers & Merchants Investments Inc. | 0.00% | No change | 28 | $643 |
| Larson Financial Group LLC | 0.00% | Reduce -95.5% | 28 | $643 |
| Rialto Wealth Management, LLC | 0.00% | New | 20 | $460 |
| HighMark Wealth Management LLC | 0.00% | New | 20 | $459 |
| Bare Financial Services, Inc | 0.00% | New | 19 | $436 |
| UMB Bank, n.a. | 0.00% | Reduce -91.6% | 19 | $436 |
| Principal Securities, Inc. | 0.00% | Reduce -97.7% | 18 | $413 |
| Annis Gardner Whiting Capital Advisors, LLC | 0.00% | New | 16 | $368 |
| Kilter Group LLC | 0.00% | New | 15 | $345 |
| Kayne Anderson Rudnick Investment Management LLC | 0.00% | No change | 15 | $344 |
| Elequin Capital, LP | 0.00% | New | 14 | $321 |
| Legacy Investment Solutions, LLC | 0.00% | — | 10 | $230 |
| Legacy Wealth Managment, LLC | 0.00% | No change | 10 | $230 |
| WealthTrak Capital Management LLC | 0.00% | New | 5 | $115 |
| Abound Wealth Management | 0.00% | No change | 4 | $92 |
"% of holder's portfolio" is AMPH's weight in each manager's 13F, not the share of Amphastar Pharmaceuticals Inc. the manager owns.