AMPH · Company research
Amphastar Pharmaceuticals, Inc. (AMPH): Ownership & Institutional Holders
Reported institutional positions. Filing dates and sources matter.
RESEARCH CONTEXT
Understand the numbers
Reported institutional positions. Filing dates and sources matter. Use period, currency, units and source fields when interpreting values.
80records availableHealthcare
Ownership & Institutional Holders data
Database-backed records only
| holder name | cik | period end | shares held | market value | ownership percent | shares change | shares change percent | filing date | data source |
|---|---|---|---|---|---|---|---|---|---|
| State of Tennessee, Department of Treasury | 1587973 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8619 | 173932 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Davis Capital Management | 1811806 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2 | 40 | — | — | — | Jul 16, 2026 | SEC_13F_DATASET |
| NORDEA INVESTMENT MANAGEMENT AB | 1218210 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 91231 | 1839217 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| SteelPeak Wealth, LLC | 1801868 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 48684 | 982444 | — | — | — | Jul 13, 2026 | SEC_13F_DATASET |
| Trust Co | 1632554 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15 | 303 | — | — | — | Jul 10, 2026 | SEC_13F_DATASET |
| Allworth Financial LP | 1555170 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 563 | 11362 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 809568 | 16337082 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| AMERIPRISE FINANCIAL INC | 820027 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 67485 | 1361848 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1481952 | 29905791 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Assenagon Asset Management S.A. | 1546007 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15216 | 307059 | — | — | — | Jul 8, 2026 | SEC_13F_DATASET |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1368163 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7783 | 157061 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| ROYCE & ASSOCIATES LP | 906304 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 294758 | 5948216 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HARBOR CAPITAL ADVISORS, INC. | 1039128 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 391 | 8 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Empowered Funds, LLC | 1592828 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 162812 | 3285546 | — | — | — | Aug 17, 2026 | SEC_13F_DATASET |
| PROFUND ADVISORS LLC | 1129919 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12015 | 242463 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| ALLSTATE CORP | 899051 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11353 | 229104 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Man Group plc | 1637460 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 17342 | 349962 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BNP PARIBAS FINANCIAL MARKETS | 1166588 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 54663 | 1103099 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| DIMENSIONAL FUND ADVISORS LP | 354204 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2209008 | 44577781 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| VANGUARD ASSET MANAGEMENT, Ltd | 1680208 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 23052 | 465189 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Context Capital Management, LLC | 1301396 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 93631000 | 85204210 | — | — | — | Jul 23, 2026 | SEC_13F_DATASET |
| Swiss National Bank | 1582202 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 64800 | 1307664 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Public Sector Pension Investment Board | 1396318 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 116648 | 2353957 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 1556921 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 50912 | 1027404 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Mirae Asset Global Investments Co., Ltd. | 1569395 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1972 | 39795 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| Point72 Asset Management, L.P. | 1603466 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 54964 | 1109174 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Nuveen, LLC | 1871926 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 74046 | 1494248 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Bank of New York Mellon Corp | 1390777 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 143183 | 2889433 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| SJS Investment Consulting Inc. | 1894302 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6 | 122 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| LSV ASSET MANAGEMENT | 1050470 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 642014 | 12956 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| CX Institutional | 1737089 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1259 | 25 | — | — | — | Jul 2, 2026 | SEC_13F_DATASET |
| AMERICAN CENTURY COMPANIES INC | 748054 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1176626 | 23744313 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Fort Baker Capital Management LP | 1688382 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12500000 | 11424361 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| AQR CAPITAL MANAGEMENT LLC | 1167557 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 206841 | 4174051 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| GROUP ONE TRADING LLC | 932540 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5100 | 102918 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Essential Partners LLC | 2136442 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 90 | 1816 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Vanguard Global Advisers, LLC | 1811242 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 87639 | 1768555 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| NISA INVESTMENT ADVISORS, LLC | 937615 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 502 | 10130 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Illinois Municipal Retirement Fund | 1541910 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 17452 | 352181 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| SummerHaven Investment Management, LLC | 1846436 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 32633 | 658534 | — | — | — | Jul 21, 2026 | SEC_13F_DATASET |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1081019 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 729527 | 36151 | — | — | — | Aug 24, 2026 | SEC_13F_DATASET |
| Capital Advisors, Ltd. LLC | 1597878 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24 | 0 | — | — | — | Jul 16, 2026 | SEC_13F_DATASET |
| WealthCollab, LLC | 2017870 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 116 | 2341 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Salomon & Ludwin, LLC | 1766156 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 81 | 1628 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Covestor Ltd | 1909846 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 65 | 1 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| SG Americas Securities, LLC | 1313360 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 31709 | 640 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Robeco Institutional Asset Management B.V. | 1418773 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 66407 | 1340093 | — | — | — | Jul 21, 2026 | SEC_13F_DATASET |
| New Age Alpha Advisors, LLC | 1764807 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3147 | 63506 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Vestcor Inc | 1536925 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5743 | 116 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Pacer Advisors, Inc. | 1616667 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 241181 | 4867 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 1007280 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 754 | 15216 | — | — | — | Aug 17, 2026 | SEC_13F_DATASET |
| CAPSTONE INVESTMENT ADVISORS, LLC | 1426196 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10080000 | 9172800 | — | — | — | Aug 17, 2026 | SEC_13F_DATASET |
| SIGNATUREFD, LLC | 1456048 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 277 | 5590 | — | — | — | Jul 24, 2026 | SEC_13F_DATASET |
| FRANKLIN RESOURCES INC | 38777 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24851 | 501493 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| WELLS FARGO & COMPANY/MN | 72971 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 28815 | 581490 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| STATE STREET CORP | 93751 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1642126 | 33138103 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| DENALI ADVISORS LLC | 1142941 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 375965 | 7586974 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Quadrature Capital Ltd | 1651424 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24428 | 492957 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| CANADA PENSION PLAN INVESTMENT BOARD | 1283718 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11500 | 232070 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| FOX RUN MANAGEMENT, L.L.C. | 1533457 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 14556 | 293740 | — | — | — | Aug 4, 2026 | SEC_13F_DATASET |
| PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 51103 | 1032 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Jupiter Topco LLC | 2146052 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16868 | 340396 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Advisor OS, LLC | 1767580 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 25405 | 512673 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| INSIGNEO ADVISORY SERVICES, LLC | 1964958 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12000 | 10890 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 861177 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 43864 | 885176 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| FIFTH THIRD BANCORP | 35527 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7300 | 147320 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| Magnetar Financial LLC | 1352851 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10906 | 220083 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Abound Wealth Management | 1950323 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4 | 81 | — | — | — | Jul 10, 2026 | SEC_13F_DATASET |
| Clearstead Advisors, LLC | 842775 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 17 | 344 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Engineers Gate Manager LP | 1620220 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 30191 | 609254 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| OREGON PUBLIC EMPLOYEES RETIREMENT FUND | 1107314 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7742 | 156234 | — | — | — | Jul 29, 2026 | SEC_13F_DATASET |
| Jain Global LLC | 2024579 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 14183 | 286213 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MetLife Investment Management, LLC | 1529735 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 20761 | 418957 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| OAKTREE CAPITAL MANAGEMENT LP | 949509 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 40880000 | 37200800 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Farther Finance Advisors, LLC | 1992825 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 774 | 15656 | — | — | — | Jul 17, 2026 | SEC_13F_DATASET |
| Pinnacle Wealth Planning Services, Inc. | 1726752 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1165 | 23510 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| RAYMOND JAMES FINANCIAL INC | 720005 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18267 | 368628 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| ALGERT GLOBAL LLC | 1275218 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 131400 | 2651652 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO | 315297 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5265 | 106 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Vident Advisory, LLC | 1744347 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 34221 | 690580 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
Informational research only, not financial advice. Forecasts are uncertain and can be wrong.