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 $572.1M in total; no superinvestor holds it.
13F holders, Q4 2021
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Dec 31, 2021. 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
- 168
- +30 vs. Q3 2021
- Shares held
- 29.2M
- +1.25M (+4.5%) vs. Q3 2021
- Total value
- $678.8M
- +$148.1M (+27.9%) vs. Q3 2021
- New holders
- 38
- 62 more added
- Sold out
- 8
- 48 more reduced
2 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2021: 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 | $572.1M |
| Q1 2026 | 215 | $634.0M |
| Q4 2025 | 236 | $899.7M |
| Q3 2025 | 243 | $872.8M |
| Q2 2025 | 245 | $752.0M |
| Q1 2025 | 241 | $963.6M |
| Q4 2024 | 264 | $1.31B |
| Q3 2024 | 279 | $1.72B |
| Q2 2024 | 269 | $1.37B |
| Q1 2024 | 271 | $1.47B |
| Q4 2023 | 276 | $2.06B |
| Q3 2023 | 256 | $1.47B |
| Q2 2023 | 246 | $1.80B |
| Q1 2023 | 218 | $1.13B |
| Q4 2022 | 213 | $816.7M |
| Q3 2022 | 207 | $839.3M |
| Q2 2022 | 223 | $1.06B |
| Q1 2022 | 203 | $1.07B |
| Q4 2021 | 168 | $678.8M |
| Q3 2021 | 140 | $530.8M |
| Q2 2021 | 146 | $549.6M |
| Q1 2021 | 135 | $476.9M |
Institutions, Q4 2021
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 7,160,665 | $166.8M | 0.00% | −16,916−0.2% | Reduced |
| Federated Hermes, Inc. | 3,464,335 | $80.7M | 0.15% | −6900.0% | Reduced |
| Vanguard Group Inc | 2,468,111 | $57.5M | 0.00% | −54,513−2.2% | Reduced |
| Dimensional Fund Advisors LP | 1,770,851 | $41.2M | 0.01% | +25,936+1.5% | Added |
| State Street Corp | 1,439,207 | $33.5M | 0.00% | −21,128−1.4% | Reduced |
| Janus Henderson Group PLC | 973,193 | $22.7M | 0.01% | +2,642+0.3% | Added |
| Geode Capital Management, LLC | 714,873 | $16.6M | 0.00% | +10,958+1.6% | Added |
| Invesco Ltd. | 696,889 | $16.2M | 0.00% | −17,430−2.4% | Reduced |
| Morgan Stanley | 618,742 | $14.4M | 0.00% | +101,307+19.6% | Added |
| Fuller & Thaler Asset Management, Inc. | 611,462 | $14.2M | 0.08% | +210,362+52.4% | Added |
| Goldman Sachs Group Inc | 588,823 | $13.7M | 0.00% | +13,592+2.4% | Added |
| Assenagon Asset Management S.A. | 527,678 | $12.3M | 0.05% | +349,875+196.8% | Added |
| Northern Trust Corp | 421,951 | $9.83M | 0.00% | −1,434−0.3% | Reduced |
| Arrowstreet Capital, Limited Partnership | 416,049 | $9.69M | 0.01% | +217,577+109.6% | Added |
| Bank of New York Mellon Corp | 370,943 | $8.64M | 0.00% | +6,943+1.9% | Added |
| Silvercrest Asset Management Group LLC | 368,951 | $8.59M | 0.05% | 00.0% | Unchanged |
| Nuveen Asset Management, LLC | 383,227 | $8.26M | 0.00% | +9,175+2.5% | Added |
| Renaissance Technologies LLC | 289,800 | $6.75M | 0.01% | +14,100+5.1% | Added |
| Principal Financial Group Inc | 280,940 | $6.54M | 0.00% | +28,772+11.4% | Added |
| Nordea Investment Management AB | 273,460 | $6.45M | 0.01% | −4,362−1.6% | Reduced |
| Charles Schwab Investment Management Inc | 260,935 | $6.08M | 0.00% | +8,168+3.2% | Added |
| Frontier Capital Management Co LLC | 252,208 | $5.87M | 0.05% | −3,605−1.4% | Reduced |
| Allspring Global Investments Holdings, LLC | 251,961 | $5.87M | 0.01% | +251,961 | New |
| Eagle Asset Management Inc | 251,616 | $5.82M | 0.03% | −33,002−11.6% | Reduced |
| Citadel Advisors LLC | 213,522 | $4.97M | 0.01% | +213,522 | New |
| Ameriprise Financial Inc | 189,509 | $4.41M | 0.00% | +1,073+0.6% | Added |
| Jacobs Levy Equity Management, Inc | 187,329 | $4.36M | 0.03% | −13,799−6.9% | Reduced |
| Parametric Portfolio Associates LLC | 164,396 | $3.83M | 0.00% | +13,608+9.0% | Added |
| BNP Paribas Arbitrage, SA | 154,185 | $3.59M | 0.01% | +106,324+222.2% | Added |
| Russell Investments Group, Ltd. | 128,221 | $2.98M | 0.00% | −40,184−23.9% | Reduced |
| JPMorgan Chase & Co | 110,515 | $2.57M | 0.00% | −63,175−36.4% | Reduced |
| Prudential Financial Inc | 104,905 | $2.44M | 0.00% | −21,747−17.2% | Reduced |
| Martingale Asset Management L P | 102,002 | $2.38M | 0.03% | −7,985−7.3% | Reduced |
| American Century Companies Inc | 93,512 | $2.18M | 0.00% | +9,291+11.0% | Added |
| Legal & General Group Plc | 87,875 | $2.05M | 0.00% | +2,606+3.1% | Added |
| LSV Asset Management | 84,846 | $1.98M | 0.00% | +35,546+72.1% | Added |
| Swiss National Bank | 83,800 | $1.95M | 0.00% | 00.0% | Unchanged |
| Clark Capital Management Group, Inc. | 80,094 | $1.86M | 0.02% | +80,094 | New |
| Rhumbline Advisers | 77,976 | $1.82M | 0.00% | −450−0.6% | Reduced |
| Public Sector Pension Investment Board | 74,952 | $1.75M | 0.01% | −17,137−18.6% | Reduced |
| Barclays PLC | 73,430 | $1.71M | 0.00% | +9,613+15.1% | Added |
| Millennium Management LLC | 73,181 | $1.70M | 0.00% | −123,757−62.8% | Reduced |
| Wells Fargo & Company | 72,337 | $1.69M | 0.00% | −243,292−77.1% | Reduced |
| Globeflex Capital L P | 72,346 | $1.69M | 0.35% | +55,889+339.6% | Added |
| Victory Capital Management Inc | 71,603 | $1.67M | 0.00% | +25,073+53.9% | Added |
| Renaissance Group LLC | 63,559 | $1.48M | 0.06% | +2,740+4.5% | Added |
| Cornercap Investment Counsel Inc | 58,975 | $1.37M | 0.20% | +1,326+2.3% | Added |
| Bank of America Corp | 56,325 | $1.31M | 0.00% | −442−0.8% | Reduced |
| California State Teachers Retirement System | 52,424 | $1.22M | 0.00% | +1,558+3.1% | Added |
| Alberta Investment Management Corp | 52,164 | $1.22M | 0.01% | +52,164 | New |
| State of Wisconsin Investment Board | 50,600 | $1.18M | 0.00% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 46,053 | $1.07M | 0.00% | −41,882−47.6% | Reduced |
| Summit Global Investments | 45,900 | $1.07M | 0.07% | −14,600−24.1% | Reduced |
| Tudor Investment Corp Et Al | 43,712 | $1.02M | 0.02% | +253+0.6% | Added |
| State of New Jersey Common Pension Fund D | 38,958 | $907.0K | 0.00% | +38,958 | New |
| Cubist Systematic Strategies, LLC | 38,509 | $897.0K | 0.01% | +23,905+163.7% | Added |
| Shell Asset Management Co | 37,199 | $866.0K | 0.02% | +177+0.5% | Added |
| Comerica Bank | 34,517 | $860.0K | 0.01% | +2,590+8.1% | Added |
| Winton Group Ltd | 36,295 | $845.0K | 0.05% | −22,031−37.8% | Reduced |
| Credit Suisse AG | 36,070 | $840.0K | 0.00% | +1,403+4.0% | Added |
| SG Americas Securities, LLC | 35,947 | $837.0K | 0.01% | −43,656−54.8% | Reduced |
| Ziegler Capital Management, LLC | 35,879 | $836.0K | 0.03% | −11,604−24.4% | Reduced |
| Yousif Capital Management, LLC | 35,629 | $830.0K | 0.01% | +35,629 | New |
| Voya Investment Management LLC | 34,370 | $800.0K | 0.00% | +1,653+5.1% | Added |
| Guggenheim Capital LLC | 34,191 | $796.0K | 0.00% | −2,865−7.7% | Reduced |
| UBS Asset Management Americas Inc | 34,016 | $792.2K | 0.00% | 00.0% | Unchanged |
| PDT Partners, LLC | 33,459 | $779.0K | 0.06% | +5,922+21.5% | Added |
| Great West Life Assurance Co | 32,491 | $756.0K | 0.00% | −203−0.6% | Reduced |
| Citigroup Inc | 30,440 | $709.0K | 0.00% | −69−0.2% | Reduced |
| Walleye Capital LLC | 30,267 | $705.0K | 0.02% | +30,267 | New |
| Thrivent Financial for Lutherans | 29,984 | $698.0K | 0.00% | +89+0.3% | Added |
| Panagora Asset Management Inc | 29,965 | $698.0K | 0.00% | +29,965 | New |
| Jump Financial, LLC | 28,800 | $671.0K | 0.04% | +4,800+20.0% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 27,847 | $649.0K | 0.01% | −195−0.7% | Reduced |
| Franklin Resources Inc | 26,873 | $626.0K | 0.00% | +384+1.4% | Added |
| D. E. Shaw & Co., Inc. | 26,769 | $623.0K | 0.00% | +26,769 | New |
| New York State Common Retirement Fund | 26,704 | $622.0K | 0.00% | −94−0.4% | Reduced |
| Texas Permanent School Fund | 26,562 | $619.0K | 0.01% | −797−2.9% | Reduced |
| Nisa Investment Advisors, LLC | 26,485 | $612.0K | 0.00% | −62−0.2% | Reduced |
| State of Alaska, Department of Revenue | 26,053 | $606.0K | 0.01% | −925−3.4% | Reduced |
| Exchange Traded Concepts, LLC | 24,983 | $582.0K | 0.01% | +24,983 | New |
| State Board of Administration of Florida Retirement System | 24,130 | $562.0K | 0.00% | −20,011−45.3% | Reduced |
| Allianz Asset Management GmbH | 23,229 | $541.0K | 0.00% | −4,788−17.1% | Reduced |
| Deutsche Bank AG | 23,259 | $541.0K | 0.00% | +1,182+5.4% | Added |
| Acadian Asset Management LLC | 23,035 | $534.0K | 0.00% | +4,533+24.5% | Added |
| American International Group, Inc. | 22,491 | $524.0K | 0.00% | −734−3.2% | Reduced |
| Occudo Quantitative Strategies LP | 20,891 | $487.0K | 0.04% | −3,959−15.9% | Reduced |
| New York State Teachers Retirement System | 20,427 | $476.0K | 0.00% | +100+0.5% | Added |
| Royce & Associates LP | 20,006 | $466.0K | 0.00% | +20,006 | New |
| Manufacturers Life Insurance Company, The | 19,642 | $457.0K | 0.00% | −794−3.9% | Reduced |
| Truist Financial Corp | 19,376 | $451.0K | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 19,366 | $451.0K | 0.00% | +19,366 | New |
| Engineers Gate Manager LP | 18,094 | $421.0K | 0.02% | +18,094 | New |
| Amalgamated Bank | 17,933 | $418.0K | 0.00% | +213+1.2% | Added |
| Louisiana State Employees Retirement System | 17,800 | $415.0K | 0.01% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 17,500 | $408.0K | 0.00% | +900+5.4% | Added |
| ProShare Advisors LLC | 15,979 | $372.0K | 0.00% | +20+0.1% | Added |
| DekaBank Deutsche Girozentrale | 15,300 | $351.0K | 0.00% | +400+2.7% | Added |
| Campbell & CO Investment Adviser LLC | 14,800 | $345.0K | 0.12% | +4,200+39.6% | Added |
| Maryland State Retirement & Pension System | 14,542 | $339.0K | 0.01% | 00.0% | Unchanged |