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, Q3 2021
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Sep 30, 2021. 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
- 140
- −4 vs. Q2 2021
- Shares held
- 27.9M
- +679.9K (+2.5%) vs. Q2 2021
- Total value
- $530.8M
- −$18.5M (−3.4%) vs. Q2 2021
- New holders
- 11
- 51 more added
- Sold out
- 15
- 54 more reduced
2 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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, Q3 2021
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rhumbline Advisers | 78,426 | $1.49M | 0.00% | −12,900−14.1% | Reduced |
| SG Americas Securities, LLC | 79,603 | $1.51M | 0.01% | +79,603 | New |
| Swiss National Bank | 83,800 | $1.59M | 0.00% | 00.0% | Unchanged |
| American Century Companies Inc | 84,221 | $1.60M | 0.00% | −9,067−9.7% | Reduced |
| Legal & General Group Plc | 85,269 | $1.62M | 0.00% | +8,668+11.3% | Added |
| Alliancebernstein L.P. | 87,935 | $1.67M | 0.00% | +40,265+84.5% | Added |
| Public Sector Pension Investment Board | 92,089 | $1.75M | 0.01% | +17,137+22.9% | Added |
| Norges Bank | 92,200 | $1.75M | 0.00% | +27,700+42.9% | Added |
| Martingale Asset Management L P | 109,987 | $2.09M | 0.03% | +60,570+122.6% | Added |
| Prudential Financial Inc | 126,652 | $2.41M | 0.00% | −55,013−30.3% | Reduced |
| Parametric Portfolio Associates LLC | 150,788 | $2.87M | 0.00% | −1,242−0.8% | Reduced |
| Russell Investments Group, Ltd. | 168,405 | $3.20M | 0.01% | +168,014+42,970.3% | Added |
| JPMorgan Chase & Co | 173,690 | $3.30M | 0.00% | −8,305−4.6% | Reduced |
| Assenagon Asset Management S.A. | 177,803 | $3.38M | 0.01% | −12,214−6.4% | Reduced |
| Ameriprise Financial Inc | 188,436 | $3.58M | 0.00% | −5,134−2.7% | Reduced |
| Millennium Management LLC | 196,938 | $3.74M | 0.00% | +180,428+1,092.8% | Added |
| Arrowstreet Capital, Limited Partnership | 198,472 | $3.77M | 0.00% | +52,554+36.0% | Added |
| Jacobs Levy Equity Management, Inc | 201,128 | $3.82M | 0.03% | +11,051+5.8% | Added |
| Principal Financial Group Inc | 252,168 | $4.79M | 0.00% | −1,516−0.6% | Reduced |
| Charles Schwab Investment Management Inc | 252,767 | $4.80M | 0.00% | −620−0.2% | Reduced |
| Frontier Capital Management Co LLC | 255,813 | $4.86M | 0.04% | +70,834+38.3% | Added |
| Renaissance Technologies LLC | 275,700 | $5.24M | 0.01% | +28,600+11.6% | Added |
| Nordea Investment Management AB | 277,822 | $5.38M | 0.01% | −3,346−1.2% | Reduced |
| Eagle Asset Management Inc | 284,618 | $5.41M | 0.02% | −19,856−6.5% | Reduced |
| Wells Fargo & Company | 315,629 | $6.00M | 0.00% | −52,390−14.2% | Reduced |
| Nuveen Asset Management, LLC | 374,052 | $6.87M | 0.00% | −45,085−10.8% | Reduced |
| Bank of New York Mellon Corp | 364,000 | $6.92M | 0.00% | +8,452+2.4% | Added |
| Silvercrest Asset Management Group LLC | 368,951 | $7.01M | 0.05% | −8,504−2.3% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 401,100 | $7.63M | 0.05% | +1,655+0.4% | Added |
| Northern Trust Corp | 423,385 | $8.05M | 0.00% | −10,218−2.4% | Reduced |
| Morgan Stanley | 517,435 | $9.84M | 0.00% | +103,210+24.9% | Added |
| Goldman Sachs Group Inc | 575,231 | $10.9M | 0.00% | −268,831−31.8% | Reduced |
| Geode Capital Management, LLC | 703,915 | $13.4M | 0.00% | +14,831+2.2% | Added |
| Invesco Ltd. | 714,319 | $13.6M | 0.00% | −74,095−9.4% | Reduced |
| Janus Henderson Group PLC | 970,551 | $18.4M | 0.01% | +415,515+74.9% | Added |
| State Street Corp | 1,460,335 | $27.8M | 0.00% | +20,404+1.4% | Added |
| Dimensional Fund Advisors LP | 1,744,915 | $33.2M | 0.01% | +49,022+2.9% | Added |
| Vanguard Group Inc | 2,522,624 | $48.0M | 0.00% | +62,893+2.6% | Added |
| Federated Hermes, Inc. | 3,465,025 | $65.9M | 0.13% | +123,524+3.7% | Added |
| BlackRock Inc. | 7,177,581 | $136.4M | 0.00% | −92,038−1.3% | Reduced |
| Exchange Traded Concepts, LLC | 0 | $0 | 0.00% | −57,851−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −40,760−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −35,699−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −24,373−100.0% | Sold out |
| 6 Meridian | 0 | $0 | 0.00% | −20,838−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −17,184−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −12,390−100.0% | Sold out |
| Veriti Management LLC | 0 | $0 | 0.00% | −11,949−100.0% | Sold out |
| Panagora Asset Management Inc | 0 | $0 | 0.00% | −7,916−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −3,479−100.0% | Sold out |
| FORA Capital, LLC | 0 | $0 | 0.00% | −1,338−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −125−100.0% | Sold out |
| Massmutual Trust Co FSB | 0 | $0 | 0.00% | −129−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Parkside Financial Bank & Trust | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| QS Investors, LLC | – | – | – | – | Not filed |
| Pinnacle Wealth Advisors | – | – | – | – | Not filed |