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 2026
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Jun 30, 2026. 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
- 212
- 0 vs. Q1 2026
- Shares held
- 28.3M
- −4.01M (−12.4%) vs. Q1 2026
- Total value
- $572.1M
- −$61.7M (−9.7%) vs. Q1 2026
- New holders
- 32
- 63 more added
- Sold out
- 32
- 77 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Torren Management, LLC | 15 | $303 | 0.00% | 00.0% | Unchanged |
| Elequin Capital LP | 11 | $222 | 0.00% | +4+57.1% | Added |
| Gilpin Wealth Management, LLC | 8 | $162 | 0.00% | +3+60.0% | Added |
| Rockefeller Capital Management L.P. | 7 | $141 | 0.00% | −117−94.4% | Reduced |
| JFS Wealth Advisors, LLC | 6 | $122 | 0.00% | +6 | New |
| SJS Investment Consulting Inc. | 6 | $122 | 0.00% | +6 | New |
| JPL Wealth Management, LLC | 5 | $101 | 0.00% | +5 | New |
| Abound Wealth Management | 4 | $81 | 0.00% | 00.0% | Unchanged |
| Davis Capital Management | 2 | $40 | 0.00% | +2 | New |
| Hughes Financial Services, LLC | 1 | $20 | 0.00% | +1 | New |
| Capital Advisors, Ltd. LLC | 24 | $0 | 0.00% | −146−85.9% | Reduced |
| Evolution Advisers, Inc. | 4 | $0 | 0.00% | +4 | New |
| TD Asset Management Inc | 0 | $0 | 0.00% | −1,541,044−100.0% | Sold out |
| Boston Trust Walden Corp | 0 | $0 | 0.00% | −944,789−100.0% | Sold out |
| Epoch Investment Partners, Inc. | 0 | $0 | 0.00% | −898,895−100.0% | Sold out |
| Rice Hall James & Associates, LLC | 0 | $0 | 0.00% | −187,348−100.0% | Sold out |
| Hussman Strategic Advisors, Inc. | 0 | $0 | 0.00% | −63,000−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −47,867−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −38,017−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −29,857−100.0% | Sold out |
| Round Rock Advisors, LLC | 0 | $0 | 0.00% | −20,495−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −18,597−100.0% | Sold out |
| nVerses Capital, LLC | 0 | $0 | 0.00% | −17,685−100.0% | Sold out |
| Quantedge Capital Pte Ltd | 0 | $0 | 0.00% | −13,500−100.0% | Sold out |
| MML Investors Services, LLC | 0 | $0 | 0.00% | −12,367−100.0% | Sold out |
| Natixis Advisors, L.P. | 0 | $0 | 0.00% | −11,510−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −11,441−100.0% | Sold out |
| JustInvest LLC | 0 | $0 | 0.00% | −10,290−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −10,215−100.0% | Sold out |
| Arizona State Retirement System | 0 | $0 | 0.00% | −10,098−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −1,131−100.0% | Sold out |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0 | $0 | 0.00% | −396−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −371−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −262−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −214−100.0% | Sold out |
| Twin Peaks Wealth Advisors, LLC | 0 | $0 | 0.00% | −177−100.0% | Sold out |
| CoreCap Advisors, LLC | 0 | $0 | 0.00% | −107−100.0% | Sold out |
| Truvestments Capital LLC | 0 | $0 | 0.00% | −96−100.0% | Sold out |
| Picton Mahoney Asset Management | 0 | $0 | 0.00% | −24−100.0% | Sold out |
| Sound Income Strategies, LLC | 0 | $0 | 0.00% | −23−100.0% | Sold out |
| Legacy Wealth Managment, LLC | 0 | $0 | 0.00% | −21−100.0% | Sold out |
| Owl Creek Wealth Partners LLC | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| Cedar Mountain Advisors, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Avion Wealth | 0 | $0 | 0.00% | −24−100.0% | Sold out |
| Janus Henderson Group PLC | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |
| Sunbelt Securities, Inc. | – | – | – | – | Not filed |