Amphastar PharmaceuticalsAMPH
13F holders, Q3 2024 (September 30)279holders +10
38new positions
32sold out
8famous investors
$48.50avg. 13F price*
At the end of Q3 2024, 279 institutions reported holding Amphastar Pharmaceuticals Inc. (AMPH) in their 13F filings, up 10 from Q2 2024. 38 opened new positions and 32 sold out. The largest holders were BlackRock, Inc. ($292.8M), Vanguard Group Inc. ($131.6M) and TD Asset Management Inc ($102.5M). 8 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Joel Greenblatt (0.0% of Gotham Asset Management's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Amphastar Pharmaceuticals Inc.
- CUSIP
- 03209R103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2024 → Q3 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 38 | $63.0M |
| Exits | 32 | $15.0M |
All 13F filers, Q2 2024 → Q3 2024: 3,503,179 shares bought and 2,559,137 shares sold, net +944,042 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 279 holders
| BlackRock, Inc. | 0.01% | — | 6,032,722 | $292.8M |
| Vanguard Group Inc. | 0.00% | Add +1.4% | 2,711,473 | $131.6M |
| TD Asset Management Inc | 0.09% | Add +26.2% | 2,135,038 | $102.5M |
| Federated Hermes, Inc. | 0.21% | Add +0.1% | 1,947,100 | $94.5M |
| Neuberger Berman Group LLC | 0.06% | Reduce -0.5% | 1,615,088 | $78.4M |
| State Street Corp. | 0.00% | Add +0.1% | 1,530,464 | $74.3M |
| Fuller & Thaler Asset Management, Inc. | 0.24% | Reduce -0.9% | 1,260,767 | $61.2M |
| Epoch Investment Partners, Inc. | 0.26% | Add +10.4% | 1,191,110 | $57.8M |
| Dimensional Fund Advisors LP | 0.01% | Add +2.1% | 1,093,302 | $53.1M |
| Geode Capital Management, LLC | 0.00% | Add +1.6% | 920,363 | $44.7M |
| Morgan Stanley | 0.00% | Add +11.1% | 677,626 | $32.9M |
| American Century Companies Inc. | 0.02% | Reduce -13.6% | 639,592 | $31.0M |
| Northern Trust Corp. | 0.00% | Add +3.4% | 583,362 | $28.3M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -2.6% | 568,894 | $27.6M |
| Marshall Wace, LLP | 0.04% | Add +150.3% | 568,494 | $27.6M |
| Boston Trust Walden Corp | 0.18% | New | 539,639 | $26.2M |
| Renaissance Technologies | 0.04% | Reduce -9.0% | 489,400 | $23.8M |
| Bessemer Group Inc. | 0.04% | Add +2.3% | 477,021 | $23.1M |
| Goldman Sachs Group Inc. | 0.00% | Add +192.6% | 449,389 | $21.8M |
| Mesirow Institutional Investment Management, Inc. | 1.53% | Add +17.1% | 413,949 | $20.1M |
| Granite Investment Partners, LLC | 0.84% | Add +2.1% | 405,718 | $19.7M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -2.5% | 350,056 | $17.0M |
| Invesco Ltd. | 0.00% | Reduce -26.2% | 332,925 | $16.2M |
| Portolan Capital Management, LLC | 1.15% | Add +201.1% | 327,764 | $15.9M |
| Boone Capital Management LLC | 3.98% | Reduce -36.1% | 316,556 | $15.4M |
| Nordea Investment Management AB | 0.01% | Reduce -4.9% | 266,863 | $13.0M |
| Millennium Management | 0.01% | Reduce -64.8% | 259,650 | $12.6M |
| Bank of New York Mellon Corp | 0.00% | Reduce -12.5% | 253,751 | $12.3M |
| Hotchkis & Wiley Capital Management LLC | 0.04% | New | 222,620 | $10.8M |
| Victory Capital Management Inc. | 0.01% | Add +10.9% | 218,531 | $10.6M |
| Nuveen Asset Management, LLC | 0.00% | Reduce -31.0% | 207,972 | $10.1M |
| Principal Financial Group Inc. | 0.01% | Reduce -7.4% | 202,017 | $9.8M |
| Silvercrest Asset Management Group LLC | 0.06% | Reduce -0.7% | 168,472 | $8.2M |
| Assenagon Asset Management S.A. | 0.02% | Reduce -11.7% | 167,355 | $8.1M |
| Oberweis Asset Management Inc./ | 0.40% | Add +19.3% | 161,155 | $7.8M |
| Bank of America Corp. | 0.00% | Add +1.8% | 158,131 | $7.7M |
| Clark Capital Management Group, Inc. | 0.05% | Add +57.8% | 153,747 | $7.5M |
| Janus Henderson Group PLC | 0.00% | Reduce -5.9% | 147,045 | $7.1M |
| Ameriprise Financial Inc. | 0.00% | Add +16.7% | 144,598 | $7.0M |
| Citadel Advisors | 0.01% | Reduce -48.6% | 135,237 | $6.6M |
| Lam Group, Inc. | 4.49% | No change | 130,800 | $6.3M |
| Frontier Capital Management Co. LLC | 0.06% | Reduce -0.9% | 123,619 | $6.0M |
| Voloridge Investment Management, LLC | 0.02% | Reduce -38.7% | 123,445 | $6.0M |
| Qube Research & Technologies Ltd | 0.01% | Reduce -43.4% | 116,678 | $5.7M |
| Raymond James & Associates | 0.00% | Add +1.7% | 116,677 | $5.7M |
| Legal & General Group Plc | 0.00% | Reduce -1.4% | 104,323 | $5.1M |
| Weiss Asset Management LP | 0.18% | New | 102,358 | $5.0M |
| UBS Group AG | 0.00% | Reduce -17.6% | 101,032 | $4.9M |
| Moody Aldrich Partners LLC | 0.89% | Add +80.0% | 100,340 | $4.9M |
| Two Sigma Investments, LP | 0.01% | Add +2.5% | 98,798 | $4.8M |
| Two Sigma Advisers, LP | 0.01% | Reduce -7.3% | 98,300 | $4.8M |
| BNP Paribas Financial Markets | 0.00% | Add +59.6% | 94,466 | $4.6M |
| Mutual of America Capital Management LLC | 0.05% | Reduce -1.5% | 92,357 | $4.5M |
| Trexquant Investment LP | 0.05% | Reduce -15.6% | 89,280 | $4.3M |
| Rhumbline Advisers | 0.00% | Reduce -4.9% | 86,114 | $4.2M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | Reduce -19.6% | 83,673 | $4.1M |
| PDT Partners, LLC | 0.35% | Add +736.8% | 81,184 | $3.9M |
| Public Sector Pension Investment Board | 0.02% | Reduce -3.9% | 80,587 | $3.9M |
| LSV Asset Management | 0.01% | No change | 80,400 | $3.9M |
| Danske Bank A/S | 0.01% | New | 80,080 | $3.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -10.9% | 76,445 | $3.7M |
| Swiss National Bank | 0.00% | Reduce -0.8% | 76,400 | $3.7M |
| Brandywine Global Investment Management, LLC | 0.02% | Add +1.3% | 75,053 | $3.7M |
| Barclays PLC | 0.00% | Add +53.3% | 74,456 | $3.6M |
| JPMorgan Chase & Co. | 0.00% | Add +3.3% | 73,920 | $3.6M |
| Bridge City Capital, LLC | 0.95% | Add +45.2% | 71,079 | $3.4M |
| New York State Common Retirement Fund | 0.00% | Add +7.3% | 70,490 | $3.4M |
| Renaissance Group LLC | 0.14% | Add +7.5% | 69,876 | $3.4M |
| Algert Global LLC | 0.09% | New | 66,285 | $3.2M |
| Jane Street Group, LLC | 0.01% | Reduce -34.2% | 63,614 | $3.1M |
| State of Wisconsin Investment Board | 0.01% | Add +89.3% | 59,231 | $2.9M |
| Citigroup Inc. | 0.00% | Add +65.2% | 57,812 | $2.8M |
| Aurora Investment Counsel | 1.44% | Add +0.4% | 54,698 | $2.7M |
| Alliancebernstein L.P. | 0.00% | Reduce -0.1% | 49,741 | $2.4M |
| Assetmark, Inc. | 0.01% | Add +9.1% | 43,906 | $2.1M |
| Wells Fargo & Company | 0.00% | Reduce -40.5% | 42,688 | $2.1M |
| AQR Capital Management | 0.00% | Reduce -25.3% | 41,667 | $2.0M |
| Sei Investments Co. | 0.00% | Add +55.3% | 41,228 | $2.0M |
| Martingale Asset Management L P | 0.04% | Add +2.5% | 40,265 | $2.0M |
| Prudential Financial Inc. | 0.00% | Reduce -5.1% | 39,324 | $1.9M |
| Point72 Asset Management | 0.01% | Reduce -83.5% | 38,817 | $1.9M |
| Glenmede Trust Co. NA | 0.01% | Add +145.3% | 37,884 | $1.8M |
| California State Teachers Retirement System | 0.00% | Reduce -3.0% | 36,964 | $1.8M |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -24.8% | 36,947 | $1.8M |
| Taika Capital, LP | 1.34% | New | 36,775 | $1.8M |
| Gotham Asset Management | 0.02% | Add +29.1% | 35,738 | $1.7M |
| Osaic Holdings, Inc. | 0.00% | Add +70.8% | 35,463 | $1.7M |
| SG Americas Securities, LLC | 0.01% | New | 35,234 | $1.7M |
| Envestnet Asset Management Inc. | 0.00% | Add +36.7% | 34,666 | $1.7M |
| FMR LLC | 0.00% | Add +23.7% | 34,335 | $1.7M |
| AlphaCentric Advisors LLC | 1.08% | Add +20.0% | 30,000 | $1.5M |
| Thrivent Financial for Lutherans | 0.00% | Reduce -5.8% | 29,815 | $1.4M |
| Chase Investment Counsel Corp. | 0.47% | New | 29,000 | $1.4M |
| Franklin Resources Inc. | 0.00% | Reduce -0.6% | 28,465 | $1.4M |
| Chatham Capital Group, Inc. | 0.22% | New | 27,690 | $1.3M |
| Arkadios Wealth Advisors | 0.07% | Add +3.2% | 26,585 | $1.3M |
| Royal Bank of Canada | 0.00% | Reduce -20.1% | 26,514 | $1.3M |
| Engineers Gate Manager LP | 0.03% | Reduce -25.9% | 26,450 | $1.3M |
| Advisor OS, LLC | 0.13% | Add +0.1% | 26,033 | $1.3M |
| Allspring Global Investments Holdings, LLC | 0.00% | Reduce -40.7% | 24,263 | $1.2M |
"% of holder's portfolio" is AMPH's weight in each manager's 13F, not the share of Amphastar Pharmaceuticals Inc. the manager owns.