Amphastar Pharmaceuticals, Inc.
AMPH- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001297184
In the last 90 days, Amphastar Pharmaceuticals, Inc. insiders filed 0 open-market purchases and 5 sales; 212 institutions reported holding it in 13F filings for Q2 2026, worth $572.4M in total; no superinvestor holds it.
13F holders, Q2 2024
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Jun 30, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 269
- 0 vs. Q1 2024
- Shares held
- 34.4M
- +857.8K (+2.6%) vs. Q1 2024
- Total value
- $1.37B
- −$96.0M (−6.5%) vs. Q1 2024
- New holders
- 38
- 100 more added
- Sold out
- 38
- 100 more reduced
2 institutions that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting AMPH on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 212 | $572.4M |
| Q1 2026 | 215 | $634.0M |
| Q4 2025 | 236 | $937.5M |
| Q3 2025 | 243 | $880.0M |
| Q2 2025 | 245 | $759.3M |
| Q1 2025 | 241 | $964.1M |
| Q4 2024 | 264 | $1.31B |
| Q3 2024 | 279 | $1.72B |
| Q2 2024 | 269 | $1.38B |
| Q1 2024 | 271 | $1.53B |
| Q4 2023 | 277 | $2.10B |
| Q3 2023 | 256 | $1.47B |
| Q2 2023 | 246 | $1.80B |
| Q1 2023 | 218 | $1.13B |
| Q4 2022 | 213 | $816.9M |
| Q3 2022 | 208 | $846.0M |
| Q2 2022 | 223 | $1.07B |
| Q1 2022 | 203 | $1.07B |
| Q4 2021 | 168 | $680.5M |
| Q3 2021 | 140 | $530.8M |
| Q2 2021 | 146 | $549.6M |
| Q1 2021 | 135 | $476.9M |
Institutions, Q2 2024
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q1 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 5,942,524 | $237.7M | 0.01% | −136,518−2.2% | Reduced |
| Vanguard Group Inc | 2,672,862 | $106.9M | 0.00% | −61,178−2.2% | Reduced |
| Federated Hermes, Inc. | 1,944,800 | $77.8M | 0.18% | −132,301−6.4% | Reduced |
| TD Asset Management Inc | 1,691,569 | $67.7M | 0.06% | +680,976+67.4% | Added |
| Neuberger Berman Group LLC | 1,622,609 | $64.9M | 0.05% | −37,208−2.2% | Reduced |
| State Street Corp | 1,529,536 | $61.2M | 0.00% | +15,287+1.0% | Added |
| Fuller & Thaler Asset Management, Inc. | 1,272,818 | $50.9M | 0.22% | −1,360−0.1% | Reduced |
| Epoch Investment Partners, Inc. | 1,078,852 | $43.2M | 0.20% | +280,390+35.1% | Added |
| Dimensional Fund Advisors LP | 1,070,275 | $42.8M | 0.01% | −113,555−9.6% | Reduced |
| Geode Capital Management, LLC | 906,348 | $36.3M | 0.00% | +40,316+4.7% | Added |
| American Century Companies Inc | 740,408 | $29.6M | 0.02% | +121,764+19.7% | Added |
| Millennium Management LLC | 738,748 | $29.5M | 0.02% | +338,653+84.6% | Added |
| Morgan Stanley | 610,137 | $24.4M | 0.00% | +51,098+9.1% | Added |
| Price T Rowe Associates Inc | 583,906 | $23.4M | 0.00% | −638−0.1% | Reduced |
| Northern Trust Corp | 564,123 | $22.6M | 0.00% | +3,341+0.6% | Added |
| Renaissance Technologies LLC | 537,700 | $21.5M | 0.04% | −61,400−10.2% | Reduced |
| Boone Capital Management LLC | 495,089 | $19.8M | 5.17% | −111,599−18.4% | Reduced |
| Bessemer Group Inc | 466,228 | $18.6M | 0.03% | +70,287+17.8% | Added |
| Invesco Ltd. | 450,930 | $18.0M | 0.00% | +47,890+11.9% | Added |
| Granite Investment Partners, LLC | 397,514 | $15.9M | 0.66% | +44,744+12.7% | Added |
| Charles Schwab Investment Management Inc | 359,222 | $14.4M | 0.00% | +2,817+0.8% | Added |
| Mesirow Institutional Investment Management, Inc. | 353,447 | $14.1M | 1.24% | +3,153+0.9% | Added |
| Nuveen Asset Management, LLC | 301,589 | $12.1M | 0.00% | +114,098+60.9% | Added |
| Bank of New York Mellon Corp | 289,954 | $11.6M | 0.00% | −4,529−1.5% | Reduced |
| Nordea Investment Management AB | 280,584 | $11.3M | 0.01% | −52,430−15.7% | Reduced |
| Citadel Advisors LLC | 263,151 | $10.5M | 0.01% | +195,454+288.7% | Added |
| Point72 Asset Management, L.P. | 235,836 | $9.43M | 0.03% | −26,564−10.1% | Reduced |
| Marshall Wace, LLP | 227,127 | $9.09M | 0.01% | +227,127 | New |
| Principal Financial Group Inc | 218,172 | $8.73M | 0.01% | −402−0.2% | Reduced |
| Qube Research & Technologies Ltd | 206,219 | $8.25M | 0.02% | +80,384+63.9% | Added |
| Voloridge Investment Management, LLC | 201,473 | $8.06M | 0.03% | −20,327−9.2% | Reduced |
| Victory Capital Management Inc | 197,001 | $7.88M | 0.01% | −15,685−7.4% | Reduced |
| Assenagon Asset Management S.A. | 189,605 | $7.58M | 0.02% | +35,306+22.9% | Added |
| Silvercrest Asset Management Group LLC | 169,576 | $6.78M | 0.05% | +57,148+50.8% | Added |
| Janus Henderson Group PLC | 156,264 | $6.25M | 0.00% | −2,934−1.8% | Reduced |
| Bank of America Corp | 155,267 | $6.21M | 0.00% | +29,888+23.8% | Added |
| Goldman Sachs Group Inc | 153,606 | $6.14M | 0.00% | −46,030−23.1% | Reduced |
| Oberweis Asset Management Inc | 135,055 | $5.40M | 0.33% | −282,810−67.7% | Reduced |
| Lam Group, Inc. | 130,800 | $5.23M | 4.41% | 00.0% | Unchanged |
| Frontier Capital Management Co LLC | 124,768 | $4.99M | 0.05% | −1,195−0.9% | Reduced |
| Ameriprise Financial Inc | 123,913 | $4.96M | 0.00% | −10,716−8.0% | Reduced |
| UBS Group AG | 122,681 | $4.91M | 0.00% | +42,229+52.5% | Added |
| Raymond James & Associates | 114,719 | $4.59M | 0.00% | +16,574+16.9% | Added |
| Portolan Capital Management, LLC | 108,863 | $4.35M | 0.36% | +17,858+19.6% | Added |
| Two Sigma Advisers, LP | 106,100 | $4.24M | 0.01% | −19,800−15.7% | Reduced |
| Legal & General Group Plc | 105,849 | $4.23M | 0.00% | −1,478−1.4% | Reduced |
| Trexquant Investment LP | 105,745 | $4.23M | 0.06% | +28,020+36.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 104,121 | $4.16M | 0.02% | +15,569+17.6% | Added |
| Clark Capital Management Group, Inc. | 97,410 | $3.90M | 0.03% | +57,346+143.1% | Added |
| Jane Street Group, LLC | 96,714 | $3.87M | 0.00% | +57,854+148.9% | Added |
| Two Sigma Investments, LP | 96,430 | $3.86M | 0.01% | −374−0.4% | Reduced |
| Mutual of America Capital Management LLC | 93,729 | $3.75M | 0.04% | −3,954−4.0% | Reduced |
| Rhumbline Advisers | 90,587 | $3.62M | 0.00% | +1,394+1.6% | Added |
| Squarepoint Ops LLC | 90,552 | $3.62M | 0.01% | +8,501+10.4% | Added |
| Ellsworth Advisors, LLC | 86,391 | $3.46M | 0.96% | +5,226+6.4% | Added |
| UBS Asset Management Americas Inc | 85,803 | $3.43M | 0.00% | +41,967+95.7% | Added |
| Public Sector Pension Investment Board | 83,887 | $3.36M | 0.02% | +7,294+9.5% | Added |
| LSV Asset Management | 80,400 | $3.22M | 0.01% | −144,368−64.2% | Reduced |
| Swiss National Bank | 77,000 | $3.08M | 0.00% | +1,400+1.9% | Added |
| Brandywine Global Investment Management, LLC | 74,115 | $2.96M | 0.02% | +74,115 | New |
| Wells Fargo & Company | 71,786 | $2.87M | 0.00% | +14,545+25.4% | Added |
| JPMorgan Chase & Co | 71,571 | $2.86M | 0.00% | −68,883−49.0% | Reduced |
| New York State Common Retirement Fund | 65,727 | $2.63M | 0.00% | +11,738+21.7% | Added |
| Renaissance Group LLC | 65,018 | $2.60M | 0.10% | +5,616+9.5% | Added |
| Hussman Strategic Advisors, Inc. | 63,000 | $2.52M | 0.69% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 59,182 | $2.37M | 0.00% | −2,051−3.3% | Reduced |
| Voya Investment Management LLC | 58,966 | $2.36M | 0.00% | −20,678−26.0% | Reduced |
| AQR Capital Management LLC | 55,796 | $2.23M | 0.00% | −1,258−2.2% | Reduced |
| Moody Aldrich Partners LLC | 55,734 | $2.23M | 0.43% | −19,744−26.2% | Reduced |
| Cubist Systematic Strategies, LLC | 55,107 | $2.20M | 0.04% | −65−0.1% | Reduced |
| Aurora Investment Counsel | 54,466 | $2.18M | 1.28% | +54,466 | New |
| ExodusPoint Capital Management, LP | 51,315 | $2.05M | 0.02% | −3,216−5.9% | Reduced |
| Alliancebernstein L.P. | 49,770 | $1.99M | 0.00% | +2,530+5.4% | Added |
| Great West Life Assurance Co | 49,122 | $1.97M | 0.00% | +9,192+23.0% | Added |
| Bridge City Capital, LLC | 48,946 | $1.96M | 0.66% | +14,173+40.8% | Added |
| Barclays PLC | 48,578 | $1.94M | 0.00% | −22,254−31.4% | Reduced |
| Twinbeech Capital LP | 45,224 | $1.81M | 0.04% | −71,845−61.4% | Reduced |
| Prudential Financial Inc | 41,425 | $1.66M | 0.00% | −559−1.3% | Reduced |
| Allspring Global Investments Holdings, LLC | 40,946 | $1.64M | 0.00% | −23,618−36.6% | Reduced |
| Assetmark, Inc | 40,256 | $1.61M | 0.00% | +4,479+12.5% | Added |
| Martingale Asset Management L P | 39,265 | $1.57M | 0.03% | −80.0% | Reduced |
| California State Teachers Retirement System | 38,117 | $1.52M | 0.00% | −152−0.4% | Reduced |
| Engineers Gate Manager LP | 35,695 | $1.43M | 0.03% | +10,250+40.3% | Added |
| Citigroup Inc | 34,995 | $1.40M | 0.00% | +47+0.1% | Added |
| Royal Bank of Canada | 33,184 | $1.33M | 0.00% | +21,045+173.4% | Added |
| Thrivent Financial for Lutherans | 31,665 | $1.27M | 0.00% | −752−2.3% | Reduced |
| State of Wisconsin Investment Board | 31,296 | $1.25M | 0.00% | −46,532−59.8% | Reduced |
| Franklin Resources Inc | 28,640 | $1.15M | 0.00% | +2,970+11.6% | Added |
| Jacobs Levy Equity Management, Inc | 28,616 | $1.14M | 0.00% | −166,369−85.3% | Reduced |
| New York State Teachers Retirement System | 27,980 | $1.12M | 0.00% | −2,875−9.3% | Reduced |
| FMR LLC | 27,752 | $1.11M | 0.00% | +6,866+32.9% | Added |
| Gotham Asset Management, LLC | 27,675 | $1.11M | 0.01% | −1,206−4.2% | Reduced |
| Redwood Investments, LLC | 26,769 | $1.06M | 0.36% | −8,287−23.6% | Reduced |
| SEI Investments Co | 26,543 | $1.06M | 0.00% | −4,087−13.3% | Reduced |
| Advisor OS, LLC | 26,012 | $1.04M | 0.11% | −927−3.4% | Reduced |
| Arkadios Wealth Advisors | 25,755 | $1.03M | 0.07% | +25,755 | New |
| Envestnet Asset Management Inc | 25,360 | $1.01M | 0.00% | +1,563+6.6% | Added |
| AlphaCentric Advisors LLC | 25,000 | $1.00M | 0.74% | +25,000 | New |
| Centiva Capital, LP | 23,575 | $943.0K | 0.05% | +23,575 | New |
| MetLife Investment Management | 22,607 | $904.3K | 0.01% | +3,090+15.8% | Added |