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 |
|---|---|---|---|---|---|
| Great West Life Assurance Co | 32,491 | $756.0K | 0.00% | −203−0.6% | Reduced |
| PDT Partners, LLC | 33,459 | $779.0K | 0.06% | +5,922+21.5% | Added |
| UBS Asset Management Americas Inc | 34,016 | $792.2K | 0.00% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 34,191 | $796.0K | 0.00% | −2,865−7.7% | Reduced |
| Voya Investment Management LLC | 34,370 | $800.0K | 0.00% | +1,653+5.1% | Added |
| Yousif Capital Management, LLC | 35,629 | $830.0K | 0.01% | +35,629 | New |
| Ziegler Capital Management, LLC | 35,879 | $836.0K | 0.03% | −11,604−24.4% | Reduced |
| SG Americas Securities, LLC | 35,947 | $837.0K | 0.01% | −43,656−54.8% | Reduced |
| Credit Suisse AG | 36,070 | $840.0K | 0.00% | +1,403+4.0% | Added |
| Winton Group Ltd | 36,295 | $845.0K | 0.05% | −22,031−37.8% | Reduced |
| Comerica Bank | 34,517 | $860.0K | 0.01% | +2,590+8.1% | Added |
| Shell Asset Management Co | 37,199 | $866.0K | 0.02% | +177+0.5% | Added |
| Cubist Systematic Strategies, LLC | 38,509 | $897.0K | 0.01% | +23,905+163.7% | Added |
| State of New Jersey Common Pension Fund D | 38,958 | $907.0K | 0.00% | +38,958 | New |
| Tudor Investment Corp Et Al | 43,712 | $1.02M | 0.02% | +253+0.6% | Added |
| Summit Global Investments | 45,900 | $1.07M | 0.07% | −14,600−24.1% | Reduced |
| Alliancebernstein L.P. | 46,053 | $1.07M | 0.00% | −41,882−47.6% | Reduced |
| State of Wisconsin Investment Board | 50,600 | $1.18M | 0.00% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 52,164 | $1.22M | 0.01% | +52,164 | New |
| California State Teachers Retirement System | 52,424 | $1.22M | 0.00% | +1,558+3.1% | Added |
| Bank of America Corp | 56,325 | $1.31M | 0.00% | −442−0.8% | Reduced |
| Cornercap Investment Counsel Inc | 58,975 | $1.37M | 0.20% | +1,326+2.3% | Added |
| Renaissance Group LLC | 63,559 | $1.48M | 0.06% | +2,740+4.5% | Added |
| Victory Capital Management Inc | 71,603 | $1.67M | 0.00% | +25,073+53.9% | Added |
| 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 |
| Millennium Management LLC | 73,181 | $1.70M | 0.00% | −123,757−62.8% | Reduced |
| Barclays PLC | 73,430 | $1.71M | 0.00% | +9,613+15.1% | Added |
| Public Sector Pension Investment Board | 74,952 | $1.75M | 0.01% | −17,137−18.6% | Reduced |
| Rhumbline Advisers | 77,976 | $1.82M | 0.00% | −450−0.6% | Reduced |
| Clark Capital Management Group, Inc. | 80,094 | $1.86M | 0.02% | +80,094 | New |
| Swiss National Bank | 83,800 | $1.95M | 0.00% | 00.0% | Unchanged |
| LSV Asset Management | 84,846 | $1.98M | 0.00% | +35,546+72.1% | Added |
| Legal & General Group Plc | 87,875 | $2.05M | 0.00% | +2,606+3.1% | Added |
| American Century Companies Inc | 93,512 | $2.18M | 0.00% | +9,291+11.0% | Added |
| Martingale Asset Management L P | 102,002 | $2.38M | 0.03% | −7,985−7.3% | Reduced |
| Prudential Financial Inc | 104,905 | $2.44M | 0.00% | −21,747−17.2% | Reduced |
| JPMorgan Chase & Co | 110,515 | $2.57M | 0.00% | −63,175−36.4% | Reduced |
| Russell Investments Group, Ltd. | 128,221 | $2.98M | 0.00% | −40,184−23.9% | Reduced |
| BNP Paribas Arbitrage, SA | 154,185 | $3.59M | 0.01% | +106,324+222.2% | Added |
| Parametric Portfolio Associates LLC | 164,396 | $3.83M | 0.00% | +13,608+9.0% | Added |
| Jacobs Levy Equity Management, Inc | 187,329 | $4.36M | 0.03% | −13,799−6.9% | Reduced |
| Ameriprise Financial Inc | 189,509 | $4.41M | 0.00% | +1,073+0.6% | Added |
| Citadel Advisors LLC | 213,522 | $4.97M | 0.01% | +213,522 | New |
| Eagle Asset Management Inc | 251,616 | $5.82M | 0.03% | −33,002−11.6% | Reduced |
| Allspring Global Investments Holdings, LLC | 251,961 | $5.87M | 0.01% | +251,961 | New |
| Frontier Capital Management Co LLC | 252,208 | $5.87M | 0.05% | −3,605−1.4% | Reduced |
| Charles Schwab Investment Management Inc | 260,935 | $6.08M | 0.00% | +8,168+3.2% | Added |
| Nordea Investment Management AB | 273,460 | $6.45M | 0.01% | −4,362−1.6% | Reduced |
| Principal Financial Group Inc | 280,940 | $6.54M | 0.00% | +28,772+11.4% | Added |
| Renaissance Technologies LLC | 289,800 | $6.75M | 0.01% | +14,100+5.1% | Added |
| Nuveen Asset Management, LLC | 383,227 | $8.26M | 0.00% | +9,175+2.5% | Added |
| Silvercrest Asset Management Group LLC | 368,951 | $8.59M | 0.05% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 370,943 | $8.64M | 0.00% | +6,943+1.9% | Added |
| Arrowstreet Capital, Limited Partnership | 416,049 | $9.69M | 0.01% | +217,577+109.6% | Added |
| Northern Trust Corp | 421,951 | $9.83M | 0.00% | −1,434−0.3% | Reduced |
| Assenagon Asset Management S.A. | 527,678 | $12.3M | 0.05% | +349,875+196.8% | Added |
| Goldman Sachs Group Inc | 588,823 | $13.7M | 0.00% | +13,592+2.4% | Added |
| Fuller & Thaler Asset Management, Inc. | 611,462 | $14.2M | 0.08% | +210,362+52.4% | Added |
| Morgan Stanley | 618,742 | $14.4M | 0.00% | +101,307+19.6% | Added |
| Invesco Ltd. | 696,889 | $16.2M | 0.00% | −17,430−2.4% | Reduced |
| Geode Capital Management, LLC | 714,873 | $16.6M | 0.00% | +10,958+1.6% | Added |
| Janus Henderson Group PLC | 973,193 | $22.7M | 0.01% | +2,642+0.3% | Added |
| State Street Corp | 1,439,207 | $33.5M | 0.00% | −21,128−1.4% | Reduced |
| Dimensional Fund Advisors LP | 1,770,851 | $41.2M | 0.01% | +25,936+1.5% | Added |
| Vanguard Group Inc | 2,468,111 | $57.5M | 0.00% | −54,513−2.2% | Reduced |
| Federated Hermes, Inc. | 3,464,335 | $80.7M | 0.15% | −6900.0% | Reduced |
| BlackRock Inc. | 7,160,665 | $166.8M | 0.00% | −16,916−0.2% | Reduced |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −21,718−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −14,315−100.0% | Sold out |
| Penserra Capital Management LLC | 0 | $0 | 0.00% | −1,100−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −800−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −177−100.0% | Sold out |
| Point72 Hong Kong Ltd | 0 | $0 | 0.00% | −139−100.0% | Sold out |
| Carroll Financial Associates, Inc. | 0 | $0 | 0.00% | −85−100.0% | Sold out |
| Meridian Wealth Partners, LLC | 0 | $0 | 0.00% | −56−100.0% | Sold out |
| First Mercantile Trust Co | – | – | – | – | Not filed |
| Berman Capital Advisors, LLC | – | – | – | – | Not filed |