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, Q1 2024
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Mar 31, 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
- 271
- −5 vs. Q4 2023
- Shares held
- 33.6M
- +264.9K (+0.8%) vs. Q4 2023
- Total value
- $1.47B
- −$585.9M (−28.5%) vs. Q4 2023
- New holders
- 48
- 89 more added
- Sold out
- 53
- 98 more reduced
Compare with Q4 2023: 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, Q1 2024
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| ExodusPoint Capital Management, LP | 54,531 | $2.39M | 0.03% | +42,235+343.5% | Added |
| Cubist Systematic Strategies, LLC | 55,172 | $2.42M | 0.03% | +8,985+19.5% | Added |
| AQR Capital Management LLC | 57,054 | $2.51M | 0.00% | +44,310+347.7% | Added |
| Wells Fargo & Company | 57,241 | $2.51M | 0.00% | +20,579+56.1% | Added |
| Renaissance Group LLC | 59,402 | $2.61M | 0.10% | +10,983+22.7% | Added |
| BNP Paribas Arbitrage, SA | 61,233 | $2.69M | 0.00% | −36,573−37.4% | Reduced |
| Hussman Strategic Advisors, Inc. | 63,000 | $2.77M | 0.64% | +63,000 | New |
| Allspring Global Investments Holdings, LLC | 64,564 | $2.84M | 0.00% | +24,678+61.9% | Added |
| First Trust Advisors LP | 67,086 | $2.95M | 0.00% | +20,169+43.0% | Added |
| Citadel Advisors LLC | 67,697 | $2.97M | 0.00% | −48,502−41.7% | Reduced |
| Barclays PLC | 70,832 | $3.11M | 0.00% | +7,590+12.0% | Added |
| Ellsworth Advisors, LLC | 81,165 | $3.22M | 0.92% | +81,165 | New |
| Moody Aldrich Partners LLC | 75,478 | $3.31M | 0.56% | +12,364+19.6% | Added |
| Swiss National Bank | 75,600 | $3.32M | 0.00% | −1,500−1.9% | Reduced |
| Public Sector Pension Investment Board | 76,593 | $3.36M | 0.02% | −950−1.2% | Reduced |
| Trexquant Investment LP | 77,725 | $3.41M | 0.07% | +38,766+99.5% | Added |
| State of Wisconsin Investment Board | 77,828 | $3.42M | 0.01% | +35,054+82.0% | Added |
| Voya Investment Management LLC | 79,644 | $3.50M | 0.00% | −22,309−21.9% | Reduced |
| UBS Group AG | 80,452 | $3.53M | 0.00% | +9,366+13.2% | Added |
| Squarepoint Ops LLC | 82,051 | $3.60M | 0.01% | −1,393−1.7% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 88,552 | $3.89M | 0.02% | +47,388+115.1% | Added |
| Rhumbline Advisers | 89,193 | $3.92M | 0.00% | −4,547−4.9% | Reduced |
| Portolan Capital Management, LLC | 91,005 | $4.00M | 0.30% | −57,411−38.7% | Reduced |
| Two Sigma Investments, LP | 96,804 | $4.25M | 0.01% | +55,029+131.7% | Added |
| Mutual of America Capital Management LLC | 97,683 | $4.29M | 0.05% | +9,926+11.3% | Added |
| Raymond James & Associates | 98,145 | $4.31M | 0.00% | +5,486+5.9% | Added |
| Legal & General Group Plc | 107,327 | $4.71M | 0.00% | +241+0.2% | Added |
| Silvercrest Asset Management Group LLC | 112,428 | $4.94M | 0.03% | +29,182+35.1% | Added |
| Twinbeech Capital LP | 117,069 | $5.14M | 0.11% | +117,069 | New |
| Bank of America Corp | 125,379 | $5.51M | 0.00% | −90,153−41.8% | Reduced |
| Qube Research & Technologies Ltd | 125,835 | $5.53M | 0.01% | +70,431+127.1% | Added |
| Two Sigma Advisers, LP | 125,900 | $5.53M | 0.01% | −1,500−1.2% | Reduced |
| Frontier Capital Management Co LLC | 125,963 | $5.53M | 0.05% | −1,574−1.2% | Reduced |
| Lam Group, Inc. | 130,800 | $5.74M | 4.68% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 134,629 | $5.91M | 0.00% | −4,626−3.3% | Reduced |
| JPMorgan Chase & Co | 140,454 | $6.17M | 0.00% | +66,229+89.2% | Added |
| Assenagon Asset Management S.A. | 154,299 | $6.78M | 0.02% | +154,299 | New |
| Janus Henderson Group PLC | 159,198 | $6.99M | 0.00% | −6,000−3.6% | Reduced |
| Nuveen Asset Management, LLC | 187,491 | $8.23M | 0.00% | −2,356−1.2% | Reduced |
| Jacobs Levy Equity Management, Inc | 194,985 | $8.56M | 0.04% | −13,530−6.5% | Reduced |
| Goldman Sachs Group Inc | 199,636 | $8.77M | 0.00% | +88,652+79.9% | Added |
| Victory Capital Management Inc | 212,686 | $9.34M | 0.01% | −24,788−10.4% | Reduced |
| Principal Financial Group Inc | 218,574 | $9.60M | 0.01% | +15,621+7.7% | Added |
| Voloridge Investment Management, LLC | 221,800 | $9.74M | 0.04% | −6,869−3.0% | Reduced |
| LSV Asset Management | 224,768 | $9.87M | 0.02% | −92,832−29.2% | Reduced |
| Point72 Asset Management, L.P. | 262,400 | $11.5M | 0.03% | +262,400 | New |
| Bank of New York Mellon Corp | 294,483 | $12.9M | 0.00% | −18,855−6.0% | Reduced |
| Nordea Investment Management AB | 333,014 | $14.8M | 0.02% | +1,209+0.4% | Added |
| Mesirow Institutional Investment Management, Inc. | 350,294 | $15.4M | 1.37% | +97,463+38.5% | Added |
| Granite Investment Partners, LLC | 352,770 | $15.5M | 0.59% | −12,570−3.4% | Reduced |
| Charles Schwab Investment Management Inc | 356,405 | $15.6M | 0.00% | −23,075−6.1% | Reduced |
| Bessemer Group Inc | 395,941 | $17.4M | 0.03% | +69,968+21.5% | Added |
| Millennium Management LLC | 400,095 | $17.6M | 0.01% | +195,078+95.2% | Added |
| Invesco Ltd. | 403,040 | $17.7M | 0.00% | +2,151+0.5% | Added |
| Oberweis Asset Management Inc | 417,865 | $18.3M | 1.33% | +77,600+22.8% | Added |
| Morgan Stanley | 559,039 | $24.5M | 0.00% | −12,074−2.1% | Reduced |
| Northern Trust Corp | 560,782 | $24.6M | 0.00% | −14,635−2.5% | Reduced |
| Price T Rowe Associates Inc | 584,544 | $25.7M | 0.00% | −2,413−0.4% | Reduced |
| Renaissance Technologies LLC | 599,100 | $26.3M | 0.04% | −42,800−6.7% | Reduced |
| Boone Capital Management LLC | 606,688 | $26.6M | 5.39% | +206,688+51.7% | Added |
| American Century Companies Inc | 618,644 | $27.2M | 0.02% | +280,954+83.2% | Added |
| Epoch Investment Partners, Inc. | 798,462 | $35.1M | 0.16% | +205,932+34.8% | Added |
| Geode Capital Management, LLC | 866,032 | $38.0M | 0.00% | +19,380+2.3% | Added |
| TD Asset Management Inc | 1,010,593 | $44.4M | 0.04% | +217,034+27.3% | Added |
| Dimensional Fund Advisors LP | 1,183,830 | $52.0M | 0.01% | −155,312−11.6% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 1,274,178 | $55.9M | 0.24% | +1,161+0.1% | Added |
| State Street Corp | 1,514,249 | $66.5M | 0.00% | +43,112+2.9% | Added |
| Neuberger Berman Group LLC | 1,659,817 | $72.9M | 0.06% | −33,185−2.0% | Reduced |
| Federated Hermes, Inc. | 2,077,101 | $91.2M | 0.21% | −1,195,660−36.5% | Reduced |
| Vanguard Group Inc | 2,734,040 | $120.1M | 0.00% | −81,556−2.9% | Reduced |
| BlackRock Inc. | 6,079,042 | $266.9M | 0.01% | +41,884+0.7% | Added |
| Beacon Harbor Wealth Advisors, Inc. | 0 | $0 | 0.00% | −103,140−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −77,080−100.0% | Sold out |
| Penserra Capital Management LLC | 0 | $0 | 0.00% | −48,749−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −45,000−100.0% | Sold out |
| Lisanti Capital Growth, LLC | 0 | $0 | 0.00% | −40,770−100.0% | Sold out |
| Eagle Asset Management Inc | 0 | $0 | 0.00% | −36,042−100.0% | Sold out |
| Tucker Asset Management LLC | 0 | $0 | 0.00% | −27,956−100.0% | Sold out |
| LPL Financial LLC | 0 | $0 | 0.00% | −23,231−100.0% | Sold out |
| Exchange Traded Concepts, LLC | 0 | $0 | 0.00% | −21,440−100.0% | Sold out |
| Zacks Investment Management | 0 | $0 | 0.00% | −20,268−100.0% | Sold out |
| Calamos Advisors LLC | 0 | $0 | 0.00% | −19,479−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −16,820−100.0% | Sold out |
| Jackson Creek Investment Advisors LLC | 0 | $0 | 0.00% | −16,618−100.0% | Sold out |
| Wakefield Asset Management LLLP | 0 | $0 | 0.00% | −14,128−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −13,400−100.0% | Sold out |
| Advisor Resource Council | 0 | $0 | 0.00% | −13,162−100.0% | Sold out |
| Thoroughbred Financial Services, LLC | 0 | $0 | 0.00% | −13,095−100.0% | Sold out |
| Seven Eight Capital, LP | 0 | $0 | 0.00% | −12,948−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −12,875−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −11,000−100.0% | Sold out |
| Westover Capital Advisors, LLC | 0 | $0 | 0.00% | −10,483−100.0% | Sold out |
| Janney Montgomery Scott LLC | 0 | $0 | 0.00% | −10,368−100.0% | Sold out |
| New York Life Investment Management LLC | 0 | $0 | 0.00% | −9,245−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −8,719−100.0% | Sold out |
| AXS Investments LLC | 0 | $0 | 0.00% | −8,000−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −7,800−100.0% | Sold out |
| Csenge Advisory Group | 0 | $0 | 0.00% | −6,672−100.0% | Sold out |
| National Asset Management, Inc. | 0 | $0 | 0.00% | −6,628−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −6,436−100.0% | Sold out |