Amphastar PharmaceuticalsAMPH
13F holders, Q2 2026 (June 30)211holders −4
29new positions
32sold out
7famous investors
$20.20avg. 13F price*
At the end of Q2 2026, 211 institutions reported holding Amphastar Pharmaceuticals Inc. (AMPH) in their 13F filings, down 4 from Q1 2026. 29 opened new positions and 32 sold out. The largest holders were BlackRock, Inc. ($105.4M), Dimensional Fund Advisors LP ($46.5M) and State Street Corp. ($33.1M). 7 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Amphastar Pharmaceuticals Inc.
- CUSIP
- 03209R103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 29 | $6.0M |
| Exits | 32 | $76.2M |
All 13F filers, Q1 2026 → Q2 2026: 2,645,146 shares bought and 6,674,057 shares sold, net −4,028,911 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 211 holders
| BlackRock, Inc. | 0.00% | Reduce -3.6% | 5,224,934 | $105.4M |
| Dimensional Fund Advisors LP | 0.01% | Add +13.7% | 2,305,107 | $46.5M |
| State Street Corp. | 0.00% | Add +2.1% | 1,642,126 | $33.1M |
| Vanguard Capital Management LLC | 0.00% | Reduce -4.0% | 1,481,952 | $29.9M |
| American Century Companies Inc. | 0.01% | Add +15.6% | 1,176,626 | $23.7M |
| Marshall Wace, LLP | 0.02% | Add +4.0% | 1,066,322 | $21.5M |
| Geode Capital Management, LLC | 0.00% | Reduce -0.7% | 969,840 | $19.6M |
| Fuller & Thaler Asset Management, Inc. | 0.05% | Reduce -32.0% | 949,238 | $19.2M |
| D. E. Shaw & Co. | 0.01% | Add +33.3% | 887,048 | $17.9M |
| Vanguard Portfolio Management LLC | 0.00% | Add +2.8% | 809,568 | $16.3M |
| LSV Asset Management | 0.02% | Reduce -1.5% | 642,014 | $13.0M |
| Renaissance Technologies | 0.01% | Reduce -5.2% | 525,100 | $10.6M |
| Goldman Sachs Group Inc. | 0.00% | Add +53.4% | 505,360 | $10.2M |
| Systematic Financial Management LP | 0.18% | Reduce -3.4% | 437,384 | $8.8M |
| Morgan Stanley | 0.00% | Add +3.5% | 434,840 | $8.8M |
| UBS Group AG | 0.00% | Reduce -6.5% | 393,110 | $7.9M |
| HRT Financial LP | 0.01% | Add +589.8% | 387,530 | $7.8M |
| Denali Advisors LLC | 0.76% | Add +41.1% | 375,965 | $7.6M |
| Northern Trust Corp. | 0.00% | Reduce -0.3% | 370,991 | $7.5M |
| Bridge City Capital, LLC | 1.56% | Add +1.1% | 338,708 | $6.8M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -3.4% | 310,178 | $6.3M |
| Bridgeway Capital Management, LLC | 0.11% | Reduce -9.5% | 298,954 | $6.0M |
| Royce & Associates LP | 0.05% | Reduce -27.4% | 294,758 | $5.9M |
| Two Sigma Investments, LP | 0.00% | Add +79.6% | 248,115 | $5.0M |
| First Trust Advisors LP | 0.00% | Add +64.0% | 246,951 | $5.0M |
| Pacer Advisors, Inc. | 0.01% | Reduce -7.8% | 241,181 | $4.9M |
| Bank of New York Mellon Corp | 0.00% | Reduce -4.5% | 232,343 | $4.7M |
| Vanguard Fiduciary Trust Co. | 0.00% | Reduce -2.8% | 224,478 | $4.5M |
| AQR Capital Management | 0.00% | Add +164.9% | 208,651 | $4.2M |
| Principal Financial Group Inc. | 0.00% | Reduce -2.3% | 204,250 | $4.1M |
| New York State Common Retirement Fund | 0.00% | Add +21.8% | 181,122 | $3.7M |
| Jane Street Group, LLC | 0.00% | Add +93.3% | 178,734 | $3.6M |
| Empowered Funds, LLC | 0.02% | Reduce -10.2% | 162,812 | $3.3M |
| O'shaughnessy Asset Management, LLC | 0.01% | Add +53.4% | 159,427 | $3.2M |
| Invesco Ltd. | 0.00% | Reduce -73.9% | 158,064 | $3.2M |
| Victory Capital Management Inc. | 0.00% | Reduce -40.1% | 149,612 | $3.0M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | No change | 139,402 | $2.8M |
| Bank of America Corp. | 0.00% | Reduce -21.5% | 136,824 | $2.8M |
| Algert Global LLC | 0.03% | Add +110.7% | 131,400 | $2.7M |
| Lam Group, Inc. | 1.31% | No change | 130,800 | $2.6M |
| Nordea Investment Management AB | 0.00% | Add +2.5% | 126,931 | $2.6M |
| Bessemer Group Inc. | 0.00% | Reduce -0.6% | 121,345 | $2.4M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Reduce -64.1% | 116,653 | $2.4M |
| Public Sector Pension Investment Board | 0.01% | Reduce -7.8% | 116,648 | $2.4M |
| Nuveen, LLC | 0.00% | Add +15.4% | 88,397 | $1.8M |
| Vanguard Global Advisers, LLC | 0.00% | Add +74.7% | 87,639 | $1.8M |
| Exchange Traded Concepts, LLC | 0.01% | Add +5.6% | 87,054 | $1.8M |
| Rhumbline Advisers | 0.00% | Reduce -3.9% | 80,454 | $1.6M |
| Squarepoint Ops LLC | 0.00% | Add +178.0% | 78,795 | $1.6M |
| Legal & General Group Plc | 0.00% | Reduce -3.3% | 78,281 | $1.6M |
| Assetmark, Inc. | 0.00% | Add +27.6% | 68,590 | $1.4M |
| Ameriprise Financial Inc. | 0.00% | Reduce -13.4% | 68,244 | $1.4M |
| Robeco Institutional Asset Management B.V. | 0.00% | No change | 66,407 | $1.3M |
| Swiss National Bank | 0.00% | Reduce -10.7% | 64,800 | $1.3M |
| JPMorgan Chase & Co. | 0.00% | Reduce -45.0% | 57,563 | $1.2M |
| Jump Financial, LLC | 0.01% | New | 56,781 | $1.1M |
| Wells Fargo & Company | 0.00% | Add +33.1% | 55,913 | $1.1M |
| Citigroup Inc. | 0.00% | Add +55.4% | 55,779 | $1.1M |
| Point72 Asset Management | 0.00% | New | 54,964 | $1.1M |
| Alliancebernstein L.P. | 0.00% | No change | 56,430 | $1.1M |
| BNP Paribas Financial Markets | 0.00% | Reduce -65.0% | 54,663 | $1.1M |
| Creative Planning | 0.00% | Add +213.6% | 51,444 | $1.0M |
| T. Rowe Price Associates Inc. | 0.00% | Add +13.8% | 51,103 | $1.0M |
| Voloridge Investment Management, LLC | 0.00% | Reduce -70.3% | 50,912 | $1.0M |
| Susquehanna International Group, LLP | 0.00% | Add +246.3% | 50,565 | $1.0M |
| Intech Investment Management LLC | 0.01% | Add +105.9% | 49,839 | $1.0M |
| SteelPeak Wealth, LLC | 0.03% | Add +0.5% | 48,684 | $982K |
| XTX Topco Ltd | 0.01% | Reduce -46.6% | 46,808 | $945K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -20.4% | 44,062 | $889K |
| Polaris Capital Management, LLC | 0.08% | No change | 43,232 | $872K |
| California State Teachers Retirement System | 0.00% | Add +27.8% | 36,151 | $730K |
| Deutsche Bank AG | 0.00% | Add +6.6% | 35,307 | $712K |
| Prudential Financial Inc. | 0.00% | Reduce -30.7% | 35,133 | $709K |
| Y-Intercept (Hong Kong) Ltd | 0.01% | New | 34,704 | $700K |
| Vident Advisory, LLC | 0.01% | Add +47.2% | 34,221 | $691K |
| Brevan Howard Capital Management LP | 0.01% | Add +194.5% | 34,201 | $690K |
| Legato Capital Management LLC | 0.06% | No change | 34,135 | $689K |
| Janney Montgomery Scott LLC | 0.00% | Add +144.9% | 33,841 | $683K |
| Segall Bryant & Hamill, LLC | 0.01% | No change | 33,318 | $672K |
| SummerHaven Investment Management, LLC | 0.35% | No change | 32,633 | $659K |
| Millennium Management | 0.00% | Reduce -91.4% | 31,814 | $642K |
| SG Americas Securities, LLC | 0.00% | Reduce -3.3% | 31,709 | $640K |
| Engineers Gate Manager LP | 0.01% | New | 30,191 | $609K |
| FMR LLC | 0.00% | Add +2137.9% | 28,958 | $584K |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -11.3% | 26,787 | $541K |
| State of Alaska, Department of Revenue | 0.01% | Reduce -3.6% | 26,433 | $531K |
| Advisor OS, LLC | 0.03% | No change | 25,405 | $513K |
| Advisory Research Inc. | 0.05% | Add +0.0% | 25,337 | $511K |
| Barclays PLC | 0.00% | Add +18.5% | 25,217 | $509K |
| Franklin Resources Inc. | 0.00% | Reduce -82.1% | 24,986 | $504K |
| Quadrature Capital Ltd | 0.00% | Reduce -20.1% | 24,428 | $493K |
| Campbell & CO Investment Adviser LLC | 0.02% | New | 23,211 | $468K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | No change | 23,052 | $465K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -5.6% | 22,295 | $450K |
| New York State Teachers Retirement System | 0.00% | Reduce -3.0% | 21,180 | $427K |
| Quantinno Capital Management LP | 0.00% | New | 20,827 | $420K |
| MetLife Investment Management, LLC | 0.00% | No change | 20,761 | $419K |
| Raymond James Financial Inc. | 0.00% | Add +1.4% | 19,313 | $390K |
| Russell Investments Group, Ltd. | 0.00% | Add +425.6% | 18,108 | $365K |
| Illinois Municipal Retirement Fund | 0.00% | Reduce -10.6% | 17,452 | $352K |
| Man Group plc | 0.00% | Reduce -53.5% | 17,342 | $350K |
| State of Wisconsin Investment Board | 0.00% | Reduce -2.0% | 17,039 | $344K |
| Jupiter Topco LLC | 0.00% | — | 16,868 | $340K |
| Citadel Advisors | 0.00% | Reduce -75.2% | 16,231 | $328K |
| Assenagon Asset Management S.A. | 0.00% | No change | 15,216 | $307K |
| Louisiana State Employees Retirement System | 0.00% | Reduce -5.1% | 14,900 | $301K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -11.7% | 14,873 | $300K |
| Fox Run Management, L.L.C. | 0.05% | New | 14,556 | $294K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -10.3% | 14,247 | $288K |
| Jain Global LLC | 0.00% | New | 14,183 | $286K |
| Hohimer Wealth Management, LLC | 0.03% | Add +0.5% | 13,128 | $265K |
| Osaic Holdings, Inc. | 0.00% | Reduce -2.3% | 12,742 | $257K |
| Profund Advisors LLC | 0.01% | Add +12.7% | 12,015 | $242K |
| Envestnet Asset Management Inc. | 0.00% | Reduce -34.3% | 11,999 | $242K |
| Canada Pension Plan Investment Board | 0.00% | Reduce -29.4% | 11,500 | $232K |
| Allstate Corp. | 0.00% | New | 11,353 | $229K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 10,913 | $220K |
| Magnetar Financial LLC | 0.00% | Reduce -2.9% | 10,906 | $220K |
| State of New Jersey Common Pension Fund D | 0.00% | Reduce -16.9% | 10,440 | $211K |
| Significant Wealth Partners LLC | 0.23% | New | 10,424 | $210K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 10,263 | $207K |
| Gotham Asset Management | 0.00% | New | 10,139 | $205K |
| Sterling Capital Management LLC | 0.00% | Reduce -4.5% | 9,912 | $200K |
| Teachers Retirement System of the State of Kentucky | 0.00% | No change | 9,053 | $182K |
| State of Tennessee, Department of Treasury | 0.00% | No change | 8,619 | $174K |
| Vanguard Investments Australia, Ltd. | 0.00% | No change | 8,567 | $173K |
| KLP Kapitalforvaltning As | 0.00% | No change | 7,900 | $159K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 7,783 | $157K |
| Oregon Public Employees Retirement Fund | 0.00% | Reduce -3.7% | 7,742 | $156K |
| Fifth Third Bancorp | 0.00% | Reduce -16.6% | 7,300 | $147K |
| State of Wyoming | 0.01% | New | 7,022 | $142K |
| China Universal Asset Management Co., Ltd. | 0.01% | Reduce -12.8% | 7,017 | $142K |
| Corient IA LP | 0.12% | No change | 6,670 | $135K |
| Vestcor Inc | 0.00% | Reduce -47.5% | 5,743 | $116K |
| Public Employees Retirement Association of Colorado | 0.00% | No change | 5,265 | $106K |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -8.2% | 5,004 | $101K |
| Royal Bank of Canada | 0.00% | Add +34.5% | 4,739 | $97K |
| Basecamp Wealth Advisors LLC | 0.02% | Add +1.4% | 4,416 | $89K |
| New Age Alpha Advisors, LLC | 0.00% | New | 3,147 | $64K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 3,101 | $63K |
| Parallel Advisors, LLC | 0.00% | Add +354.8% | 2,988 | $60K |
| Federated Hermes, Inc. | 0.00% | Reduce -79.3% | 2,910 | $59K |
| Hantz Financial Services, Inc. | 0.00% | Add +19.2% | 2,417 | $49K |
| TD Private Client Wealth LLC | 0.00% | No change | 2,379 | $48K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Reduce -16.6% | 1,972 | $40K |
| Quantbot Technologies LP | 0.00% | New | 1,924 | $39K |
| Arax Advisory Partners | 0.00% | Add +2911.7% | 1,807 | $36K |
| Fulcrum Asset Management LLP | 0.00% | New | 1,750 | $36K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -61.4% | 1,514 | $31K |
| Blue Trust, Inc. | 0.00% | Reduce -20.8% | 1,273 | $26K |
| CX Institutional | 0.00% | Reduce -57.6% | 1,259 | $25K |
| Pinnacle Wealth Planning Services, Inc. | 0.00% | Add +311.7% | 1,165 | $24K |
| US Bancorp \de | 0.00% | Add +251.9% | 1,119 | $23K |
| GF Fund Management Co. LTD. | 0.00% | Reduce -6.0% | 963 | $19K |
| Vanguard National Trust Co | 0.00% | No change | 886 | $18K |
| Farther Finance Advisors, LLC | 0.00% | Reduce -31.9% | 774 | $16K |
| Public Employees Retirement System of Ohio | 0.00% | Add +28.0% | 754 | $15K |
| 1620 Investment Advisors, Inc. | 0.01% | Reduce -14.3% | 615 | $12K |
| Nykredit A/S | 0.00% | — | 595 | $12K |
| Allworth Financial LP | 0.00% | Add +1209.3% | 563 | $11K |
| Huntington National Bank | 0.00% | New | 525 | $11K |
| Nisa Investment Advisors, LLC | 0.00% | Add +39.1% | 502 | $10K |
| MassMutual Private Wealth & Trust, FSB | 0.00% | Add +93.3% | 433 | $9K |
| Harbor Capital Advisors, Inc. | 0.00% | No change | 391 | $8K |
| GAMMA Investing LLC | 0.00% | Reduce -8.0% | 312 | $6K |
| UMB Bank, n.a. | 0.00% | Add +62.2% | 292 | $6K |
| Global Retirement Partners, LLC | 0.00% | — | 291 | $6K |
| Smartleaf Asset Management LLC | 0.00% | No change | 273 | $6K |
| Signaturefd, LLC | 0.00% | Reduce -52.9% | 277 | $6K |
| Jones Financial Companies LLLP | 0.00% | Reduce -20.8% | 228 | $5K |
| Aster Capital Management (DIFC) Ltd | 0.00% | New | 238 | $5K |
| Versant Capital Management, Inc | 0.00% | No change | 218 | $4K |
| Los Angeles Capital Management LLC | 0.00% | No change | 217 | $4K |
| Spire Wealth Management | 0.00% | No change | 206 | $4K |
| Optiver Holding B.V. | 0.00% | Add +585.7% | 192 | $4K |
| Rothschild Investment LLC | 0.00% | Add +17600.0% | 177 | $4K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +533.3% | 152 | $3K |
| City State Bank | 0.00% | No change | 150 | $3K |
| WealthCollab, LLC | 0.00% | Add +81.3% | 116 | $2K |
| Bank of New Hampshire | 0.00% | Reduce -46.6% | 110 | $2K |
| Parkside Financial Bank & Trust | 0.00% | Reduce -31.4% | 107 | $2K |
| MCF Advisors LLC | 0.00% | No change | 100 | $2K |
| Steward Partners Investment Advisory, LLC | 0.00% | No change | 100 | $2K |
| Essential Partners LLC | 0.00% | Reduce -25.6% | 90 | $2K |
| Salomon & Ludwin, LLC | 0.00% | New | 81 | $2K |
| IFP Advisors, Inc | 0.00% | No change | 70 | $1K |
| HighMark Wealth Management LLC | 0.00% | No change | 55 | $1K |
| SBI Securities Co., Ltd. | 0.00% | Add +15.9% | 51 | $1K |
| Covestor Ltd | 0.00% | Add +75.7% | 65 | $1K |
| Zions Bancorporation, National Association | 0.00% | New | 37 | $747 |
| Wealth Enhancement Trust Services, Inc. | 0.00% | New | 35 | $706 |
| Keating Financial Advisory Services, Inc. | 0.00% | New | 28 | $565 |
| Brown, Lisle/Cummings, Inc. | 0.00% | No change | 27 | $545 |
| Farmers & Merchants Investments Inc. | 0.00% | No change | 25 | $505 |
| Bare Financial Services, Inc | 0.00% | Reduce -50.0% | 23 | $464 |
| Larson Financial Group LLC | 0.00% | No change | 20 | $404 |
| Clearstead Advisors, LLC | 0.00% | New | 17 | $344 |
| Continuum Advisory, LLC | 0.00% | New | 17 | $343 |
| Torren Management, LLC | 0.00% | No change | 15 | $303 |
| Trust Co | 0.00% | No change | 15 | $303 |
| Elequin Capital, LP | 0.00% | Add +57.1% | 11 | $222 |
| Gilpin Wealth Management, LLC | 0.00% | Add +60.0% | 8 | $162 |
| Rockefeller Capital Management L.P. | 0.00% | Reduce -94.3% | 7 | $141 |
| JFS Wealth Advisors, LLC | 0.00% | New | 6 | $122 |
| SJS Investment Consulting Inc. | 0.00% | New | 6 | $122 |
| JPL Wealth Management, LLC | 0.00% | New | 5 | $101 |
| Abound Wealth Management | 0.00% | No change | 4 | $81 |
| Davis Capital Management | 0.00% | New | 2 | $40 |
| Hughes Financial Services, LLC | 0.00% | New | 1 | $20 |
| Capital Advisors, Ltd. LLC | 0.00% | Reduce -85.9% | 24 | $0 |
| Evolution Advisers, Inc. | 0.00% | New | 4 | $0 |
"% of holder's portfolio" is AMPH's weight in each manager's 13F, not the share of Amphastar Pharmaceuticals Inc. the manager owns.