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 2022
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Jun 30, 2022. 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
- 223
- +24 vs. Q1 2022
- Shares held
- 30.6M
- +1.09M (+3.7%) vs. Q1 2022
- Total value
- $1.06B
- +$5.17M (+0.5%) vs. Q1 2022
- New holders
- 38
- 90 more added
- Sold out
- 14
- 74 more reduced
4 institutions that held it in Q1 2022 haven't filed for Q2 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2022: 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 2022
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q1 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 7,072,197 | $246.0M | 0.01% | −31,327−0.4% | Reduced |
| Federated Hermes, Inc. | 3,282,967 | $114.2M | 0.31% | −204,463−5.9% | Reduced |
| Vanguard Group Inc | 2,560,777 | $89.1M | 0.00% | +77,572+3.1% | Added |
| Dimensional Fund Advisors LP | 1,826,043 | $63.5M | 0.02% | +29,774+1.7% | Added |
| State Street Corp | 1,540,846 | $53.6M | 0.00% | +218,895+16.6% | Added |
| Morgan Stanley | 826,791 | $28.8M | 0.00% | +264,396+47.0% | Added |
| Fuller & Thaler Asset Management, Inc. | 726,516 | $25.3M | 0.17% | +111,661+18.2% | Added |
| Geode Capital Management, LLC | 692,388 | $24.1M | 0.00% | −11,091−1.6% | Reduced |
| Nuveen Asset Management, LLC | 590,824 | $20.6M | 0.01% | +114,149+23.9% | Added |
| Invesco Ltd. | 510,047 | $17.7M | 0.01% | −223,795−30.5% | Reduced |
| Assenagon Asset Management S.A. | 419,017 | $14.6M | 0.06% | −8,588−2.0% | Reduced |
| Northern Trust Corp | 415,143 | $14.4M | 0.00% | +11,001+2.7% | Added |
| Renaissance Technologies LLC | 406,900 | $14.2M | 0.02% | +98,200+31.8% | Added |
| Bank of New York Mellon Corp | 365,846 | $12.7M | 0.00% | −35,559−8.9% | Reduced |
| MESIROW FINANCIAL INVESTMENT MANAGEMENT - Equity & Fixed Income | 341,294 | $11.9M | 1.52% | +89,635+35.6% | Added |
| Nordea Investment Management AB | 346,781 | $11.9M | 0.02% | +62,390+21.9% | Added |
| Goldman Sachs Group Inc | 329,843 | $11.5M | 0.00% | +213,355+183.2% | Added |
| Charles Schwab Investment Management Inc | 314,793 | $11.0M | 0.00% | +46,395+17.3% | Added |
| Arrowstreet Capital, Limited Partnership | 304,672 | $10.6M | 0.02% | −86,913−22.2% | Reduced |
| Portolan Capital Management, LLC | 274,889 | $9.56M | 0.96% | +274,889 | New |
| Principal Financial Group Inc | 256,544 | $8.93M | 0.01% | −10,360−3.9% | Reduced |
| Silvercrest Asset Management Group LLC | 231,276 | $8.05M | 0.06% | −10,425−4.3% | Reduced |
| Russell Investments Group, Ltd. | 227,809 | $7.92M | 0.02% | +73,470+47.6% | Added |
| Eagle Asset Management Inc | 227,459 | $7.91M | 0.05% | +50,120+28.3% | Added |
| JPMorgan Chase & Co | 217,156 | $7.55M | 0.00% | +128,688+145.5% | Added |
| Frontier Capital Management Co LLC | 205,663 | $7.16M | 0.08% | −45,609−18.2% | Reduced |
| Hillsdale Investment Management Inc. | 197,738 | $6.88M | 0.55% | −36,600−15.6% | Reduced |
| Ameriprise Financial Inc | 196,100 | $6.82M | 0.00% | +8,316+4.4% | Added |
| Castleark Management LLC | 192,649 | $6.70M | 0.36% | +192,649 | New |
| Jacobs Levy Equity Management, Inc | 187,129 | $6.51M | 0.05% | +74,613+66.3% | Added |
| Voloridge Investment Management, LLC | 176,982 | $6.16M | 0.03% | +82,912+88.1% | Added |
| Price T Rowe Associates Inc | 162,814 | $5.66M | 0.00% | +162,814 | New |
| Pacer Advisors, Inc. | 149,964 | $5.22M | 0.04% | +149,964 | New |
| Acadian Asset Management LLC | 128,734 | $4.48M | 0.02% | +18,586+16.9% | Added |
| LSV Asset Management | 127,053 | $4.42M | 0.01% | −12,700−9.1% | Reduced |
| Quantedge Capital Pte Ltd | 121,500 | $4.23M | 0.85% | +90,400+290.7% | Added |
| Cubist Systematic Strategies, LLC | 112,157 | $3.90M | 0.03% | −28,072−20.0% | Reduced |
| Two Sigma Advisers, LP | 111,400 | $3.88M | 0.01% | +87,700+370.0% | Added |
| Calamos Advisors LLC | 100,942 | $3.51M | 0.02% | +6,299+6.7% | Added |
| Friess Associates LLC | 97,760 | $3.40M | 5.68% | −56,655−36.7% | Reduced |
| Swiss National Bank | 90,500 | $3.15M | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 89,234 | $3.10M | 0.00% | +2,043+2.3% | Added |
| Prudential Financial Inc | 90,015 | $3.07M | 0.00% | +9,130+11.3% | Added |
| Bank of America Corp | 83,907 | $2.92M | 0.00% | +22,678+37.0% | Added |
| Millennium Management LLC | 82,041 | $2.85M | 0.00% | −91,280−52.7% | Reduced |
| AXA S.A. | 79,869 | $2.78M | 0.01% | +79,869 | New |
| Rhumbline Advisers | 79,187 | $2.75M | 0.00% | −808−1.0% | Reduced |
| Martingale Asset Management L P | 74,574 | $2.60M | 0.05% | −8,562−10.3% | Reduced |
| Globeflex Capital L P | 72,253 | $2.51M | 0.61% | −47−0.1% | Reduced |
| Public Sector Pension Investment Board | 69,602 | $2.42M | 0.02% | +830+1.2% | Added |
| Clark Capital Management Group, Inc. | 68,957 | $2.40M | 0.03% | −26,672−27.9% | Reduced |
| EAM Investors, LLC | 68,855 | $2.40M | 0.58% | −55,842−44.8% | Reduced |
| State of New Jersey Common Pension Fund D | 67,410 | $2.35M | 0.01% | +67,410 | New |
| Occudo Quantitative Strategies LP | 66,113 | $2.30M | 0.19% | +41,300+166.4% | Added |
| Barclays PLC | 64,118 | $2.23M | 0.00% | +11,773+22.5% | Added |
| D. E. Shaw & Co., Inc. | 61,735 | $2.15M | 0.00% | −3,404−5.2% | Reduced |
| SEI Investments Co | 60,625 | $2.12M | 0.00% | +20,518+51.2% | Added |
| Graham Capital Management, L.P. | 60,386 | $2.10M | 0.10% | +29,718+96.9% | Added |
| Qube Research & Technologies Ltd | 59,233 | $2.06M | 0.02% | +10,409+21.3% | Added |
| Allspring Global Investments Holdings, LLC | 59,053 | $2.05M | 0.00% | −23,000−28.0% | Reduced |
| Schroder Investment Management Group | 59,632 | $2.04M | 0.00% | +59,632 | New |
| Aviva PLC | 56,747 | $1.97M | 0.01% | +56,747 | New |
| PDT Partners, LLC | 54,804 | $1.91M | 0.17% | +20,415+59.4% | Added |
| Exchange Traded Concepts, LLC | 54,293 | $1.89M | 0.05% | +1,612+3.1% | Added |
| Summit Global Investments | 53,214 | $1.85M | 0.16% | +8,514+19.0% | Added |
| BNP Paribas Arbitrage, SA | 51,006 | $1.77M | 0.00% | −88,020−63.3% | Reduced |
| Alliancebernstein L.P. | 50,347 | $1.75M | 0.00% | +4,141+9.0% | Added |
| D.A. Davidson & Co. | 50,339 | $1.75M | 0.02% | −795−1.6% | Reduced |
| California State Teachers Retirement System | 49,751 | $1.73M | 0.00% | +1,383+2.9% | Added |
| EAM Global Investors LLC | 48,505 | $1.69M | 0.41% | −43,197−47.1% | Reduced |
| UBS Asset Management Americas Inc | 47,885 | $1.67M | 0.00% | +4,651+10.8% | Added |
| American Century Companies Inc | 45,293 | $1.58M | 0.00% | −32,937−42.1% | Reduced |
| Victory Capital Management Inc | 44,750 | $1.56M | 0.00% | −17,949−28.6% | Reduced |
| Renaissance Group LLC | 42,939 | $1.49M | 0.08% | −5,894−12.1% | Reduced |
| State of Wisconsin Investment Board | 41,568 | $1.45M | 0.00% | −9,032−17.8% | Reduced |
| Citadel Advisors LLC | 41,398 | $1.44M | 0.00% | −196,485−82.6% | Reduced |
| Gotham Asset Management, LLC | 39,432 | $1.37M | 0.04% | +28,492+260.4% | Added |
| Great West Life Assurance Co | 37,512 | $1.30M | 0.00% | +5,236+16.2% | Added |
| Shaker Investments LLC | 37,117 | $1.29M | 0.82% | +3,323+9.8% | Added |
| Thrivent Financial for Lutherans | 36,940 | $1.28M | 0.00% | +6,946+23.2% | Added |
| Robeco Institutional Asset Management B.V. | 36,497 | $1.27M | 0.00% | +2,936+8.7% | Added |
| Credit Suisse AG | 35,398 | $1.23M | 0.00% | −6,137−14.8% | Reduced |
| AQR Capital Management LLC | 35,290 | $1.23M | 0.00% | +21,791+161.4% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 34,275 | $1.19M | 0.01% | +2,512+7.9% | Added |
| Ziegler Capital Management, LLC | 33,946 | $1.18M | 0.05% | +767+2.3% | Added |
| Comerica Bank | 30,272 | $1.11M | 0.01% | +90+0.3% | Added |
| Trexquant Investment LP | 31,363 | $1.09M | 0.05% | −5,042−13.8% | Reduced |
| Citigroup Inc | 31,339 | $1.09M | 0.00% | −7,325−18.9% | Reduced |
| Allianz Asset Management GmbH | 31,009 | $1.08M | 0.00% | +7,780+33.5% | Added |
| Jackson Creek Investment Advisors LLC | 28,837 | $1.08M | 0.44% | −20,977−42.1% | Reduced |
| Algert Global LLC | 30,733 | $1.07M | 0.08% | +16,490+115.8% | Added |
| Tudor Investment Corp Et Al | 30,676 | $1.07M | 0.03% | −9,719−24.1% | Reduced |
| Cornercap Investment Counsel Inc | 30,107 | $1.05M | 0.18% | −16,888−35.9% | Reduced |
| Winton Group Ltd | 29,641 | $1.03M | 0.05% | +12,920+77.3% | Added |
| FMR LLC | 29,507 | $1.03M | 0.00% | −118−0.4% | Reduced |
| State of Alaska, Department of Revenue | 28,438 | $989.0K | 0.01% | +2,810+11.0% | Added |
| Marshall Wace, LLP | 28,441 | $989.0K | 0.00% | +11,024+63.3% | Added |
| New York State Teachers Retirement System | 28,161 | $980.0K | 0.00% | +6,702+31.2% | Added |
| Yousif Capital Management, LLC | 28,129 | $979.0K | 0.01% | −3,040−9.8% | Reduced |
| State of Tennessee, Treasury Department | 27,867 | $969.0K | 0.00% | +13,972+100.6% | Added |