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 2023
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Mar 31, 2023. 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
- 218
- +6 vs. Q4 2022
- Shares held
- 30.2M
- +1.08M (+3.7%) vs. Q4 2022
- Total value
- $1.13B
- +$316.8M (+38.8%) vs. Q4 2022
- New holders
- 32
- 76 more added
- Sold out
- 26
- 82 more reduced
1 institution that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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 2023
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Nordea Investment Management AB | 330,213 | $12.5M | 0.02% | −7,214−2.1% | Reduced |
| Portolan Capital Management, LLC | 340,593 | $12.8M | 1.22% | +69,802+25.8% | Added |
| Millennium Management LLC | 343,560 | $12.9M | 0.01% | +246,130+252.6% | Added |
| Bank of New York Mellon Corp | 347,212 | $13.0M | 0.00% | +1,196+0.3% | Added |
| Neuberger Berman Group LLC | 431,252 | $16.2M | 0.01% | +431,252 | New |
| Price T Rowe Associates Inc | 468,420 | $17.6M | 0.00% | −320,750−40.6% | Reduced |
| Renaissance Technologies LLC | 496,800 | $18.6M | 0.02% | +49,400+11.0% | Added |
| Morgan Stanley | 520,043 | $19.5M | 0.00% | −83,005−13.8% | Reduced |
| Granite Investment Partners, LLC | 536,821 | $20.1M | 0.84% | +536,821 | New |
| Invesco Ltd. | 592,769 | $22.2M | 0.01% | −53,190−8.2% | Reduced |
| Northern Trust Corp | 649,228 | $24.3M | 0.00% | +211,281+48.2% | Added |
| Geode Capital Management, LLC | 759,981 | $28.5M | 0.00% | +37,700+5.2% | Added |
| Fuller & Thaler Asset Management, Inc. | 811,694 | $30.4M | 0.18% | +311,629+62.3% | Added |
| State Street Corp | 1,359,495 | $51.0M | 0.00% | +985+0.1% | Added |
| Dimensional Fund Advisors LP | 1,917,571 | $71.9M | 0.02% | +51,027+2.7% | Added |
| Vanguard Group Inc | 2,651,605 | $99.4M | 0.00% | +29,798+1.1% | Added |
| Federated Hermes, Inc. | 3,386,613 | $127.0M | 0.32% | +102,396+3.1% | Added |
| BlackRock Inc. | 6,567,076 | $246.3M | 0.01% | −471,693−6.7% | Reduced |
| Pacer Advisors, Inc. | 0 | $0 | 0.00% | −231,009−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −61,271−100.0% | Sold out |
| Schroder Investment Management Group | 0 | $0 | 0.00% | −44,326−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −43,937−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −23,870−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −23,213−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −18,300−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −16,480−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −16,398−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −14,515−100.0% | Sold out |
| Navellier & Associates Inc | 0 | $0 | 0.00% | −13,155−100.0% | Sold out |
| Jupiter Asset Management Ltd | 0 | $0 | 0.00% | −13,128−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −10,370−100.0% | Sold out |
| Kula Investments, LLC | 0 | $0 | 0.00% | −10,236−100.0% | Sold out |
| DuPont Capital Management Corp | 0 | $0 | 0.00% | −2,980−100.0% | Sold out |
| Point72 Middle East FZE | 0 | $0 | 0.00% | −1,782−100.0% | Sold out |
| Sutton Wealth Advisors Inc. | 0 | $0 | 0.00% | −1,355−100.0% | Sold out |
| Anfield Capital Management, LLC | 0 | $0 | 0.00% | −1,027−100.0% | Sold out |
| Money Concepts Capital Corp | 0 | $0 | 0.00% | −602−100.0% | Sold out |
| Ellevest, Inc. | 0 | $0 | 0.00% | −405−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −279−100.0% | Sold out |
| Aua Capital Management, LLC | 0 | $0 | 0.00% | −28−100.0% | Sold out |
| Sofos Investments, Inc. | 0 | $0 | 0.00% | −28−100.0% | Sold out |
| Tfo-TDC, LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Rockefeller Capital Management L.P. | 0 | $0 | 0.00% | −14−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −18−100.0% | Sold out |
| Comerica Bank | – | – | – | – | Not filed |