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 2023
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Sep 30, 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
- 256
- +13 vs. Q2 2023
- Shares held
- 32.0M
- +617.6K (+2.0%) vs. Q2 2023
- Total value
- $1.47B
- −$330.6M (−18.3%) vs. Q2 2023
- New holders
- 41
- 89 more added
- Sold out
- 28
- 93 more reduced
3 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2023: 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 2023
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Thrivent Financial for Lutherans | 63,930 | $2.94M | 0.01% | −24,201−27.5% | Reduced |
| First Trust Advisors LP | 79,063 | $3.64M | 0.00% | −22,874−22.4% | Reduced |
| JPMorgan Chase & Co | 80,549 | $3.70M | 0.00% | −3,299−3.9% | Reduced |
| Cubist Systematic Strategies, LLC | 82,907 | $3.81M | 0.05% | −38,119−31.5% | Reduced |
| Silvercrest Asset Management Group LLC | 83,246 | $3.83M | 0.03% | −26,401−24.1% | Reduced |
| Swiss National Bank | 84,900 | $3.90M | 0.00% | +900+1.1% | Added |
| Two Sigma Advisers, LP | 85,400 | $3.93M | 0.01% | +12,800+17.6% | Added |
| Mutual of America Capital Management LLC | 91,570 | $4.21M | 0.05% | −18,616−16.9% | Reduced |
| Rhumbline Advisers | 93,512 | $4.30M | 0.00% | +2,559+2.8% | Added |
| Two Sigma Investments, LP | 95,484 | $4.39M | 0.01% | +65,474+218.2% | Added |
| Hillsdale Investment Management Inc. | 96,548 | $4.44M | 0.41% | −3,660−3.7% | Reduced |
| D. E. Shaw & Co., Inc. | 100,173 | $4.61M | 0.01% | −23,426−19.0% | Reduced |
| Squarepoint Ops LLC | 101,502 | $4.67M | 0.02% | +31,874+45.8% | Added |
| Qube Research & Technologies Ltd | 102,324 | $4.71M | 0.01% | +96,167+1,561.9% | Added |
| Beacon Harbor Wealth Advisors, Inc. | 103,095 | $4.74M | 1.58% | −1,910−1.8% | Reduced |
| Legal & General Group Plc | 106,950 | $4.92M | 0.00% | −2,475−2.3% | Reduced |
| Janus Henderson Group PLC | 112,580 | $5.18M | 0.00% | +15,505+16.0% | Added |
| BNP Paribas Arbitrage, SA | 122,480 | $5.63M | 0.01% | +55,108+81.8% | Added |
| Frontier Capital Management Co LLC | 127,326 | $5.86M | 0.06% | −18,570−12.7% | Reduced |
| Lam Group, Inc. | 128,000 | $5.89M | 5.78% | 00.0% | Unchanged |
| Citadel Advisors LLC | 128,715 | $5.92M | 0.01% | −49,235−27.7% | Reduced |
| Russell Investments Group, Ltd. | 130,521 | $6.00M | 0.01% | +93,817+255.6% | Added |
| Alliancebernstein L.P. | 131,950 | $6.07M | 0.00% | +81,870+163.5% | Added |
| Epoch Investment Partners, Inc. | 132,057 | $6.07M | 0.04% | −390.0% | Reduced |
| Portolan Capital Management, LLC | 132,850 | $6.11M | 0.57% | −49,393−27.1% | Reduced |
| Bank of America Corp | 134,832 | $6.20M | 0.00% | +6,518+5.1% | Added |
| TD Asset Management Inc | 144,558 | $6.65M | 0.01% | −13,500−8.5% | Reduced |
| Bessemer Group Inc | 148,144 | $6.81M | 0.01% | +147,824+46,195.0% | Added |
| Ameriprise Financial Inc | 149,669 | $6.88M | 0.00% | −13,685−8.4% | Reduced |
| Oberweis Asset Management Inc | 152,500 | $7.01M | 0.74% | +4,700+3.2% | Added |
| Mesirow Institutional Investment Management, Inc. | 183,805 | $8.45M | 0.86% | +54,343+42.0% | Added |
| American Century Companies Inc | 200,277 | $9.21M | 0.01% | +68,668+52.2% | Added |
| Principal Financial Group Inc | 210,036 | $9.66M | 0.01% | −18,723−8.2% | Reduced |
| LSV Asset Management | 212,368 | $9.77M | 0.02% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 294,461 | $13.5M | 0.00% | +9,887+3.5% | Added |
| Millennium Management LLC | 296,307 | $13.6M | 0.01% | +68,077+29.8% | Added |
| Bank of New York Mellon Corp | 326,507 | $15.0M | 0.00% | −15,614−4.6% | Reduced |
| Granite Investment Partners, LLC | 330,911 | $15.2M | 0.64% | −202,248−37.9% | Reduced |
| Nordea Investment Management AB | 338,443 | $15.7M | 0.02% | −349−0.1% | Reduced |
| Charles Schwab Investment Management Inc | 352,378 | $16.2M | 0.00% | +24,116+7.3% | Added |
| Nuveen Asset Management, LLC | 353,959 | $16.3M | 0.01% | −20,560−5.5% | Reduced |
| Voloridge Investment Management, LLC | 371,310 | $17.1M | 0.08% | +183,371+97.6% | Added |
| Invesco Ltd. | 410,629 | $18.9M | 0.01% | −150,045−26.8% | Reduced |
| Jacobs Levy Equity Management, Inc | 554,850 | $25.5M | 0.15% | +171,642+44.8% | Added |
| Morgan Stanley | 558,209 | $25.7M | 0.00% | −8,606−1.5% | Reduced |
| Northern Trust Corp | 559,423 | $25.7M | 0.00% | −76,020−12.0% | Reduced |
| Price T Rowe Associates Inc | 569,712 | $26.2M | 0.00% | +63,404+12.5% | Added |
| Renaissance Technologies LLC | 603,100 | $27.7M | 0.05% | +110,517+22.4% | Added |
| Geode Capital Management, LLC | 809,626 | $37.2M | 0.00% | +29,367+3.8% | Added |
| Fuller & Thaler Asset Management, Inc. | 1,275,214 | $58.6M | 0.34% | −4,281−0.3% | Reduced |
| State Street Corp | 1,459,491 | $67.1M | 0.00% | +64,987+4.7% | Added |
| Neuberger Berman Group LLC | 1,487,979 | $68.4M | 0.06% | −2,305−0.2% | Reduced |
| Dimensional Fund Advisors LP | 1,887,738 | $86.8M | 0.03% | −42,877−2.2% | Reduced |
| Vanguard Group Inc | 2,767,393 | $127.3M | 0.00% | −6,216−0.2% | Reduced |
| Federated Hermes, Inc. | 3,442,234 | $158.3M | 0.42% | +13,304+0.4% | Added |
| BlackRock Inc. | 6,090,259 | $280.1M | 0.01% | +2,0320.0% | Added |
| 1832 Asset Management L.P. | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Penserra Capital Management LLC | 0 | $0 | 0.00% | −64,291−100.0% | Sold out |
| Roman Butler Fullerton & Co | 0 | $0 | 0.00% | −24,710−100.0% | Sold out |
| Spire Wealth Management | 0 | $0 | 0.00% | −19,523−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −12,800−100.0% | Sold out |
| Assenagon Asset Management S.A. | 0 | $0 | 0.00% | −12,123−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −11,189−100.0% | Sold out |
| J.W. Cole Advisors, Inc. | 0 | $0 | 0.00% | −10,922−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −10,895−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −10,239−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −9,144−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −8,868−100.0% | Sold out |
| Select Equity Group, L.P. | 0 | $0 | 0.00% | −7,211−100.0% | Sold out |
| Ci Investments Inc. | 0 | $0 | 0.00% | −6,791−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −6,105−100.0% | Sold out |
| Bailard, Inc. | 0 | $0 | 0.00% | −5,600−100.0% | Sold out |
| Horizon Investment Services, LLC | 0 | $0 | 0.00% | −4,808−100.0% | Sold out |
| Watershed Asset Management, L.L.C. | 0 | $0 | 0.00% | −4,627−100.0% | Sold out |
| Veriti Management LLC | 0 | $0 | 0.00% | −4,527−100.0% | Sold out |
| Baader Bank INC | 0 | $0 | 0.00% | −4,500−100.0% | Sold out |
| Hancock Whitney Corp | 0 | $0 | 0.00% | −3,998−100.0% | Sold out |
| Mercer Global Advisors Inc | 0 | $0 | 0.00% | −3,701−100.0% | Sold out |
| Eqis Capital Management, Inc. | 0 | $0 | 0.00% | −3,586−100.0% | Sold out |
| West Tower Group, LLC | 0 | $0 | 0.00% | −677−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −394−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −196−100.0% | Sold out |
| Global Trust Asset Management, LLC | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Disciplined Investments, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| EA Series Trust | – | – | – | – | Not filed |
| Pictet Asset Management SA | – | – | – | – | Not filed |
| First Capital Advisors Group, LLC. | – | – | – | – | Not filed |