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, Q2 2025
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Jun 30, 2025. 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
- 245
- +5 vs. Q1 2025
- Shares held
- 32.7M
- −518.9K (−1.6%) vs. Q1 2025
- Total value
- $752.0M
- −$211.6M (−22.0%) vs. Q1 2025
- New holders
- 45
- 91 more added
- Sold out
- 40
- 73 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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, Q2 2025
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Legal & General Group Plc | 101,154 | $2.32M | 0.00% | −422−0.4% | Reduced |
| Susquehanna Fundamental Investments, LLC | 101,553 | $2.33M | 0.06% | −13,533−11.8% | Reduced |
| Raymond James Financial Inc | 117,119 | $2.69M | 0.00% | +87,447+294.7% | Added |
| Algert Global LLC | 124,290 | $2.85M | 0.06% | +106,990+618.4% | Added |
| Public Sector Pension Investment Board | 125,363 | $2.88M | 0.01% | +6,478+5.4% | Added |
| Lam Group, Inc. | 130,800 | $3.00M | 2.01% | 00.0% | Unchanged |
| Bridge City Capital, LLC | 138,644 | $3.18M | 0.89% | +22,789+19.7% | Added |
| Bank of America Corp | 145,125 | $3.33M | 0.00% | +38,435+36.0% | Added |
| Nordea Investment Management AB | 152,015 | $3.49M | 0.00% | +1,083+0.7% | Added |
| Trexquant Investment LP | 155,229 | $3.56M | 0.04% | +63,938+70.0% | Added |
| JPMorgan Chase & Co | 158,114 | $3.63M | 0.00% | +91,234+136.4% | Added |
| Jane Street Group, LLC | 160,082 | $3.68M | 0.01% | +113,417+243.0% | Added |
| Ameriprise Financial Inc | 169,849 | $3.90M | 0.00% | +14,703+9.5% | Added |
| Principal Financial Group Inc | 219,042 | $5.03M | 0.00% | +6,395+3.0% | Added |
| American Century Companies Inc | 233,161 | $5.35M | 0.00% | −74,832−24.3% | Reduced |
| CX Institutional | 263,283 | $6.04M | 0.21% | +181,136+220.5% | Added |
| Balyasny Asset Management LLC | 266,306 | $6.11M | 0.01% | +104,168+64.2% | Added |
| Price T Rowe Associates Inc | 273,288 | $6.28M | 0.00% | −267,933−49.5% | Reduced |
| Royce & Associates LP | 283,187 | $6.50M | 0.07% | +35,329+14.3% | Added |
| Citadel Advisors LLC | 292,345 | $6.71M | 0.01% | +136,366+87.4% | Added |
| D. E. Shaw & Co., Inc. | 293,928 | $6.75M | 0.01% | +264,740+907.0% | Added |
| Bank of New York Mellon Corp | 314,803 | $7.23M | 0.00% | +48,728+18.3% | Added |
| Royal Bank of Canada | 318,717 | $7.32M | 0.00% | +292,638+1,122.1% | Added |
| Voloridge Investment Management, LLC | 325,512 | $7.47M | 0.03% | +109,510+50.7% | Added |
| Pacer Advisors, Inc. | 326,098 | $7.49M | 0.02% | −153,292−32.0% | Reduced |
| Charles Schwab Investment Management Inc | 346,784 | $7.96M | 0.00% | +20,558+6.3% | Added |
| Goldman Sachs Group Inc | 356,250 | $8.18M | 0.00% | −50,462−12.4% | Reduced |
| Systematic Financial Management LP | 359,307 | $8.25M | 0.22% | +32,761+10.0% | Added |
| Hotchkis & Wiley Capital Management LLC | 365,920 | $8.40M | 0.03% | +95,770+35.5% | Added |
| Invesco Ltd. | 386,971 | $8.88M | 0.00% | +27,828+7.7% | Added |
| Northern Trust Corp | 421,136 | $9.67M | 0.00% | −173,301−29.2% | Reduced |
| Qube Research & Technologies Ltd | 469,492 | $10.8M | 0.01% | +210,511+81.3% | Added |
| Renaissance Technologies LLC | 576,500 | $13.2M | 0.02% | +81,500+16.5% | Added |
| Millennium Management LLC | 618,984 | $14.2M | 0.01% | −249,567−28.7% | Reduced |
| Morgan Stanley | 681,222 | $15.6M | 0.00% | +159,110+30.5% | Added |
| Marshall Wace, LLP | 848,685 | $19.5M | 0.02% | −183,037−17.7% | Reduced |
| Geode Capital Management, LLC | 973,237 | $22.3M | 0.00% | +18,161+1.9% | Added |
| Boston Trust Walden Corp | 1,176,453 | $27.0M | 0.19% | −39,171−3.2% | Reduced |
| Epoch Investment Partners, Inc. | 1,241,369 | $28.5M | 0.15% | −19,938−1.6% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 1,263,772 | $29.0M | 0.11% | +1740.0% | Added |
| State Street Corp | 1,576,233 | $36.2M | 0.00% | −28,381−1.8% | Reduced |
| Dimensional Fund Advisors LP | 1,626,884 | $37.4M | 0.01% | +270,524+19.9% | Added |
| TD Asset Management Inc | 2,034,930 | $46.7M | 0.04% | −177,212−8.0% | Reduced |
| Vanguard Group Inc | 2,686,950 | $61.7M | 0.00% | +264,046+10.9% | Added |
| BlackRock, Inc. | 5,668,793 | $130.2M | 0.00% | −478,865−7.8% | Reduced |
| Boston Partners | 0 | $0 | 0.00% | −423,070−100.0% | Sold out |
| Granite Investment Partners, LLC | 0 | $0 | 0.00% | −375,778−100.0% | Sold out |
| Silvercrest Asset Management Group LLC | 0 | $0 | 0.00% | −165,856−100.0% | Sold out |
| Frontier Capital Management Co LLC | 0 | $0 | 0.00% | −119,628−100.0% | Sold out |
| Numerai GP LLC | 0 | $0 | 0.00% | −34,006−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −32,241−100.0% | Sold out |
| Hussman Strategic Advisors, Inc. | 0 | $0 | 0.00% | −31,500−100.0% | Sold out |
| Franklin Resources Inc | 0 | $0 | 0.00% | −20,260−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −20,136−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −19,756−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −18,358−100.0% | Sold out |
| Allspring Global Investments Holdings, LLC | 0 | $0 | 0.00% | −15,326−100.0% | Sold out |
| LPL Financial LLC | 0 | $0 | 0.00% | −14,300−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −14,925−100.0% | Sold out |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −13,790−100.0% | Sold out |
| Pathstone Holdings, LLC | 0 | $0 | 0.00% | −10,328−100.0% | Sold out |
| Envestnet Asset Management Inc | 0 | $0 | 0.00% | −9,938−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −8,498−100.0% | Sold out |
| Shaker Investments LLC | 0 | $0 | 0.00% | −8,475−100.0% | Sold out |
| CIBC World Markets Corp | 0 | $0 | 0.00% | −8,399−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −8,277−100.0% | Sold out |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −8,126−100.0% | Sold out |
| Cornerstone Investment Partners, LLC | 0 | $0 | 0.00% | −8,028−100.0% | Sold out |
| Hennion & Walsh Asset Management, Inc. | 0 | $0 | 0.00% | −7,764−100.0% | Sold out |
| Corient IA LLC | 0 | $0 | 0.00% | −7,500−100.0% | Sold out |
| CI Private Wealth, LLC | 0 | $0 | 0.00% | −7,230−100.0% | Sold out |
| Tiemann Investment Advisors, LLC | 0 | $0 | 0.00% | −6,962−100.0% | Sold out |
| FORA Capital, LLC | 0 | $0 | 0.00% | −6,903−100.0% | Sold out |
| EMC Capital Management | 0 | $0 | 0.00% | −3,113−100.0% | Sold out |
| KBC Group NV | 0 | $0 | 0.00% | −2,159−100.0% | Sold out |
| BI Asset Management Fondsmaeglerselskab A/S | 0 | $0 | 0.00% | −1,359−100.0% | Sold out |
| Coldstream Capital Management Inc | 0 | $0 | 0.00% | −334−100.0% | Sold out |
| Capital Advisors, Ltd. LLC | 0 | $0 | 0.00% | −75−100.0% | Sold out |
| Cherry Tree Wealth Management, LLC | 0 | $0 | 0.00% | −58−100.0% | Sold out |
| Boston Private Wealth LLC | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| Barrow Hanley Mewhinney & Strauss LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Bell Investment Advisors, Inc | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| Stephens Consulting, LLC | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Bruce G. Allen Investments, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Lindbrook Capital, LLC | – | – | – | – | Not filed |