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 2024
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Dec 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
- 264
- −13 vs. Q3 2024
- Shares held
- 35.2M
- −142.7K (−0.4%) vs. Q3 2024
- Total value
- $1.31B
- −$405.9M (−23.7%) vs. Q3 2024
- New holders
- 37
- 84 more added
- Sold out
- 50
- 100 more reduced
2 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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 | $572.1M |
| 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 2024
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| New York State Common Retirement Fund | 70,490 | $2.62M | 0.00% | 00.0% | Unchanged |
| Swiss National Bank | 76,400 | $2.84M | 0.00% | 00.0% | Unchanged |
| First Trust Advisors LP | 81,129 | $3.01M | 0.00% | +63,100+350.0% | Added |
| UBS Asset Management Americas Inc | 83,231 | $3.09M | 0.00% | +6,786+8.9% | Added |
| Barclays PLC | 84,790 | $3.15M | 0.00% | +10,334+13.9% | Added |
| Two Sigma Advisers, LP | 85,900 | $3.19M | 0.01% | −12,400−12.6% | Reduced |
| Rhumbline Advisers | 87,327 | $3.24M | 0.00% | +1,213+1.4% | Added |
| PDT Partners, LLC | 90,484 | $3.36M | 0.30% | +9,300+11.5% | Added |
| Mutual of America Capital Management LLC | 92,251 | $3.43M | 0.04% | −106−0.1% | Reduced |
| Raymond James Financial Inc | 92,904 | $3.45M | 0.00% | +92,904 | New |
| Public Sector Pension Investment Board | 93,430 | $3.47M | 0.01% | +12,843+15.9% | Added |
| Nuveen Asset Management, LLC | 95,665 | $3.55M | 0.00% | −112,307−54.0% | Reduced |
| Two Sigma Investments, LP | 98,184 | $3.65M | 0.01% | −614−0.6% | Reduced |
| Jane Street Group, LLC | 99,487 | $3.69M | 0.01% | +35,873+56.4% | Added |
| Renaissance Group LLC | 99,572 | $3.70M | 0.15% | +29,696+42.5% | Added |
| Legal & General Group Plc | 103,741 | $3.85M | 0.00% | −582−0.6% | Reduced |
| Trexquant Investment LP | 105,528 | $3.92M | 0.05% | +16,248+18.2% | Added |
| Bank of America Corp | 112,094 | $4.16M | 0.00% | −46,037−29.1% | Reduced |
| Qube Research & Technologies Ltd | 115,292 | $4.28M | 0.01% | −1,386−1.2% | Reduced |
| D. E. Shaw & Co., Inc. | 118,851 | $4.41M | 0.00% | +95,192+402.4% | Added |
| Frontier Capital Management Co LLC | 123,360 | $4.58M | 0.04% | −259−0.2% | Reduced |
| Lam Group, Inc. | 130,800 | $4.86M | 3.46% | 00.0% | Unchanged |
| Portolan Capital Management, LLC | 131,123 | $4.87M | 0.33% | −196,641−60.0% | Reduced |
| Citadel Advisors LLC | 140,413 | $5.21M | 0.00% | +5,176+3.8% | Added |
| Voloridge Investment Management, LLC | 143,436 | $5.33M | 0.02% | +19,991+16.2% | Added |
| Ameriprise Financial Inc | 146,015 | $5.42M | 0.00% | +1,417+1.0% | Added |
| Clark Capital Management Group, Inc. | 148,075 | $5.50M | 0.04% | −5,672−3.7% | Reduced |
| JPMorgan Chase & Co | 153,571 | $5.70M | 0.00% | +79,651+107.8% | Added |
| UBS Group AG | 153,742 | $5.71M | 0.00% | +52,710+52.2% | Added |
| Assenagon Asset Management S.A. | 161,399 | $5.99M | 0.01% | −5,956−3.6% | Reduced |
| Silvercrest Asset Management Group LLC | 166,814 | $6.19M | 0.04% | −1,658−1.0% | Reduced |
| Oberweis Asset Management Inc | 184,595 | $6.85M | 0.32% | +23,440+14.5% | Added |
| Janus Henderson Group PLC | 189,347 | $7.03M | 0.00% | +42,302+28.8% | Added |
| Principal Financial Group Inc | 207,978 | $7.72M | 0.00% | +5,961+3.0% | Added |
| Hotchkis & Wiley Capital Management LLC | 237,520 | $8.82M | 0.03% | +14,900+6.7% | Added |
| Systematic Financial Management LP | 246,348 | $9.15M | 0.23% | +246,348 | New |
| Millennium Management LLC | 256,556 | $9.53M | 0.01% | −3,094−1.2% | Reduced |
| Nordea Investment Management AB | 279,714 | $10.4M | 0.01% | +12,851+4.8% | Added |
| Bank of New York Mellon Corp | 285,863 | $10.6M | 0.00% | +32,112+12.7% | Added |
| Invesco Ltd. | 298,864 | $11.1M | 0.00% | −34,061−10.2% | Reduced |
| Charles Schwab Investment Management Inc | 347,512 | $12.9M | 0.00% | −2,544−0.7% | Reduced |
| Mesirow Institutional Investment Management, Inc. | 380,389 | $14.1M | 1.09% | −33,560−8.1% | Reduced |
| Granite Investment Partners, LLC | 396,702 | $14.7M | 0.64% | −9,016−2.2% | Reduced |
| Boston Partners | 426,636 | $15.8M | 0.02% | +426,636 | New |
| Goldman Sachs Group Inc | 427,835 | $15.9M | 0.00% | −21,554−4.8% | Reduced |
| American Century Companies Inc | 472,017 | $17.5M | 0.01% | −167,575−26.2% | Reduced |
| Bessemer Group Inc | 488,630 | $18.1M | 0.03% | +11,609+2.4% | Added |
| Renaissance Technologies LLC | 525,500 | $19.5M | 0.03% | +36,100+7.4% | Added |
| Price T Rowe Associates Inc | 566,656 | $21.0M | 0.00% | −2,238−0.4% | Reduced |
| Marshall Wace, LLP | 608,706 | $22.6M | 0.03% | +40,212+7.1% | Added |
| Northern Trust Corp | 613,170 | $22.8M | 0.00% | +29,808+5.1% | Added |
| Morgan Stanley | 632,074 | $23.5M | 0.00% | −45,552−6.7% | Reduced |
| Federated Hermes, Inc. | 823,487 | $30.6M | 0.07% | −1,123,613−57.7% | Reduced |
| Geode Capital Management, LLC | 916,081 | $34.0M | 0.00% | −4,282−0.5% | Reduced |
| Boston Trust Walden Corp | 978,920 | $36.3M | 0.26% | +439,281+81.4% | Added |
| Epoch Investment Partners, Inc. | 1,101,273 | $40.9M | 0.20% | −89,837−7.5% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 1,132,926 | $42.1M | 0.16% | −127,841−10.1% | Reduced |
| Dimensional Fund Advisors LP | 1,198,590 | $44.5M | 0.01% | +105,288+9.6% | Added |
| Pacer Advisors, Inc. | 1,350,368 | $50.1M | 0.11% | +1,347,775+51,977.4% | Added |
| Neuberger Berman Group LLC | 1,374,125 | $51.0M | 0.04% | −240,963−14.9% | Reduced |
| State Street Corp | 1,596,110 | $59.3M | 0.00% | +65,646+4.3% | Added |
| TD Asset Management Inc | 1,840,286 | $68.3M | 0.06% | −294,752−13.8% | Reduced |
| Vanguard Group Inc | 2,714,628 | $100.8M | 0.00% | +3,155+0.1% | Added |
| BlackRock, Inc. | 6,117,822 | $227.2M | 0.00% | +85,100+1.4% | Added |
| Boone Capital Management LLC | 0 | $0 | 0.00% | −316,556−100.0% | Sold out |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −102,358−100.0% | Sold out |
| Moody Aldrich Partners LLC | 0 | $0 | 0.00% | −100,340−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −80,080−100.0% | Sold out |
| Brandywine Global Investment Management, LLC | 0 | $0 | 0.00% | −75,053−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −66,285−100.0% | Sold out |
| Taika Capital, LP | 0 | $0 | 0.00% | −36,775−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −35,234−100.0% | Sold out |
| AlphaCentric Advisors LLC | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Chase Investment Counsel Corp | 0 | $0 | 0.00% | −29,000−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −23,915−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −16,169−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −16,132−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −13,891−100.0% | Sold out |
| Guidance Capital, Inc | 0 | $0 | 0.00% | −10,388−100.0% | Sold out |
| Juncture Wealth Strategies, LLC | 0 | $0 | 0.00% | −10,652−100.0% | Sold out |
| International Assets Investment Management, LLC | 0 | $0 | 0.00% | −22,809−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −7,140−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −6,961−100.0% | Sold out |
| Everence Capital Management Inc | 0 | $0 | 0.00% | −6,470−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −6,115−100.0% | Sold out |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −5,714−100.0% | Sold out |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −5,651−100.0% | Sold out |
| First Hawaiian Bank | 0 | $0 | 0.00% | −5,519−100.0% | Sold out |
| Court Place Advisors, LLC | 0 | $0 | 0.00% | −5,500−100.0% | Sold out |
| Cetera Investment Advisers | 0 | $0 | 0.00% | −5,237−100.0% | Sold out |
| Pictet Asset Management Holding SA | 0 | $0 | 0.00% | −5,116−100.0% | Sold out |
| Hancock Whitney Corp | 0 | $0 | 0.00% | −5,109−100.0% | Sold out |
| Petrus Trust Company, LTA | 0 | $0 | 0.00% | −5,013−100.0% | Sold out |
| Brinker Capital Investments, LLC | 0 | $0 | 0.00% | −4,919−100.0% | Sold out |
| Orion Portfolio Solutions, LLC | 0 | $0 | 0.00% | −4,919−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −4,916−100.0% | Sold out |
| Xponance, Inc. | 0 | $0 | 0.00% | −4,497−100.0% | Sold out |
| Cresset Asset Management, LLC | 0 | $0 | 0.00% | −4,363−100.0% | Sold out |
| Retirement Guys Formula LLC | 0 | $0 | 0.00% | −4,185−100.0% | Sold out |
| Point72 (DIFC) Ltd | 0 | $0 | 0.00% | −3,954−100.0% | Sold out |