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 2024
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Sep 30, 2024. 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
- 279
- +11 vs. Q2 2024
- Shares held
- 35.4M
- +7.01M (+24.7%) vs. Q2 2024
- Total value
- $1.72B
- +$580.9M (+51.1%) vs. Q2 2024
- New holders
- 43
- 99 more added
- Sold out
- 32
- 93 more reduced
1 institution that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2024: 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 2024
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Martingale Asset Management L P | 40,265 | $1.95M | 0.04% | +1,000+2.5% | Added |
| SEI Investments Co | 41,228 | $2.00M | 0.00% | +14,685+55.3% | Added |
| AQR Capital Management LLC | 41,667 | $2.02M | 0.00% | −14,129−25.3% | Reduced |
| Wells Fargo & Company | 42,688 | $2.07M | 0.00% | −29,098−40.5% | Reduced |
| Assetmark, Inc | 43,906 | $2.13M | 0.01% | +3,650+9.1% | Added |
| Alliancebernstein L.P. | 49,741 | $2.41M | 0.00% | −29−0.1% | Reduced |
| Aurora Investment Counsel | 54,698 | $2.65M | 1.44% | +232+0.4% | Added |
| Citigroup Inc | 57,812 | $2.81M | 0.00% | +22,817+65.2% | Added |
| State of Wisconsin Investment Board | 59,231 | $2.87M | 0.01% | +27,935+89.3% | Added |
| Jane Street Group, LLC | 63,614 | $3.09M | 0.00% | −33,100−34.2% | Reduced |
| Algert Global LLC | 66,285 | $3.22M | 0.09% | +66,285 | New |
| Renaissance Group LLC | 69,876 | $3.39M | 0.14% | +4,858+7.5% | Added |
| New York State Common Retirement Fund | 70,490 | $3.42M | 0.00% | +4,763+7.2% | Added |
| Bridge City Capital, LLC | 71,079 | $3.45M | 0.95% | +22,133+45.2% | Added |
| JPMorgan Chase & Co | 73,920 | $3.59M | 0.00% | +2,349+3.3% | Added |
| Barclays PLC | 74,456 | $3.61M | 0.00% | +25,878+53.3% | Added |
| Brandywine Global Investment Management, LLC | 75,053 | $3.70M | 0.02% | +938+1.3% | Added |
| Swiss National Bank | 76,400 | $3.71M | 0.00% | −600−0.8% | Reduced |
| UBS Asset Management Americas Inc | 76,445 | $3.71M | 0.00% | −9,358−10.9% | Reduced |
| Danske Bank A/S | 80,080 | $3.89M | 0.01% | +80,080 | New |
| LSV Asset Management | 80,400 | $3.90M | 0.01% | 00.0% | Unchanged |
| Public Sector Pension Investment Board | 80,587 | $3.91M | 0.02% | −3,300−3.9% | Reduced |
| PDT Partners, LLC | 81,184 | $3.94M | 0.35% | +71,482+736.8% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 83,673 | $4.06M | 0.02% | −20,448−19.6% | Reduced |
| Rhumbline Advisers | 86,114 | $4.18M | 0.00% | −4,473−4.9% | Reduced |
| Trexquant Investment LP | 89,280 | $4.33M | 0.05% | −16,465−15.6% | Reduced |
| Mutual of America Capital Management LLC | 92,357 | $4.48M | 0.05% | −1,372−1.5% | Reduced |
| BNP Paribas Arbitrage, SA | 94,466 | $4.58M | 0.00% | +35,284+59.6% | Added |
| Two Sigma Advisers, LP | 98,300 | $4.77M | 0.01% | −7,800−7.4% | Reduced |
| Two Sigma Investments, LP | 98,798 | $4.79M | 0.01% | +2,368+2.5% | Added |
| Moody Aldrich Partners LLC | 100,340 | $4.87M | 0.89% | +44,606+80.0% | Added |
| UBS Group AG | 101,032 | $4.90M | 0.00% | −21,649−17.6% | Reduced |
| Weiss Asset Management LP | 102,358 | $4.97M | 0.13% | +102,358 | New |
| Legal & General Group Plc | 104,323 | $5.06M | 0.00% | −1,526−1.4% | Reduced |
| Raymond James & Associates | 116,677 | $5.66M | 0.00% | +1,958+1.7% | Added |
| Qube Research & Technologies Ltd | 116,678 | $5.66M | 0.01% | −89,541−43.4% | Reduced |
| Voloridge Investment Management, LLC | 123,445 | $5.99M | 0.02% | −78,028−38.7% | Reduced |
| Frontier Capital Management Co LLC | 123,619 | $6.00M | 0.06% | −1,149−0.9% | Reduced |
| Lam Group, Inc. | 130,800 | $6.35M | 4.49% | 00.0% | Unchanged |
| Citadel Advisors LLC | 135,237 | $6.56M | 0.01% | −127,914−48.6% | Reduced |
| Ameriprise Financial Inc | 144,598 | $7.02M | 0.00% | +20,685+16.7% | Added |
| Janus Henderson Group PLC | 147,045 | $7.14M | 0.00% | −9,219−5.9% | Reduced |
| Clark Capital Management Group, Inc. | 153,747 | $7.46M | 0.05% | +56,337+57.8% | Added |
| Bank of America Corp | 158,131 | $7.67M | 0.00% | +2,864+1.8% | Added |
| Oberweis Asset Management Inc | 161,155 | $7.82M | 0.40% | +26,100+19.3% | Added |
| Assenagon Asset Management S.A. | 167,355 | $8.12M | 0.02% | −22,250−11.7% | Reduced |
| Silvercrest Asset Management Group LLC | 168,472 | $8.18M | 0.06% | −1,104−0.7% | Reduced |
| Principal Financial Group Inc | 202,017 | $9.80M | 0.01% | −16,155−7.4% | Reduced |
| Nuveen Asset Management, LLC | 207,972 | $10.1M | 0.00% | −93,617−31.0% | Reduced |
| Victory Capital Management Inc | 218,531 | $10.6M | 0.01% | +21,530+10.9% | Added |
| Hotchkis & Wiley Capital Management LLC | 222,620 | $10.8M | 0.04% | +222,620 | New |
| Bank of New York Mellon Corp | 253,751 | $12.3M | 0.00% | −36,203−12.5% | Reduced |
| Millennium Management LLC | 259,650 | $12.6M | 0.01% | −479,098−64.9% | Reduced |
| Nordea Investment Management AB | 266,863 | $13.0M | 0.01% | −13,721−4.9% | Reduced |
| Boone Capital Management LLC | 316,556 | $15.4M | 3.98% | −178,533−36.1% | Reduced |
| Portolan Capital Management, LLC | 327,764 | $15.9M | 1.15% | +218,901+201.1% | Added |
| Invesco Ltd. | 332,925 | $16.2M | 0.00% | −118,005−26.2% | Reduced |
| Charles Schwab Investment Management Inc | 350,056 | $17.0M | 0.00% | −9,166−2.6% | Reduced |
| Granite Investment Partners, LLC | 405,718 | $19.7M | 0.84% | +8,204+2.1% | Added |
| Mesirow Institutional Investment Management, Inc. | 413,949 | $20.1M | 1.53% | +60,502+17.1% | Added |
| Goldman Sachs Group Inc | 449,389 | $21.8M | 0.00% | +295,783+192.6% | Added |
| Bessemer Group Inc | 477,021 | $23.1M | 0.04% | +10,793+2.3% | Added |
| Renaissance Technologies LLC | 489,400 | $23.8M | 0.04% | −48,300−9.0% | Reduced |
| Boston Trust Walden Corp | 539,639 | $26.2M | 0.18% | +539,639 | New |
| Marshall Wace, LLP | 568,494 | $27.6M | 0.04% | +341,367+150.3% | Added |
| Price T Rowe Associates Inc | 568,894 | $27.6M | 0.00% | −15,012−2.6% | Reduced |
| Northern Trust Corp | 583,362 | $28.3M | 0.00% | +19,239+3.4% | Added |
| American Century Companies Inc | 639,592 | $31.0M | 0.02% | −100,816−13.6% | Reduced |
| Morgan Stanley | 677,626 | $32.9M | 0.00% | +67,489+11.1% | Added |
| Geode Capital Management, LLC | 920,363 | $44.7M | 0.00% | +14,015+1.5% | Added |
| Dimensional Fund Advisors LP | 1,093,302 | $53.1M | 0.01% | +23,027+2.2% | Added |
| Epoch Investment Partners, Inc. | 1,191,110 | $57.8M | 0.26% | +112,258+10.4% | Added |
| Fuller & Thaler Asset Management, Inc. | 1,260,767 | $61.2M | 0.24% | −12,051−0.9% | Reduced |
| State Street Corp | 1,530,464 | $74.3M | 0.00% | +928+0.1% | Added |
| Neuberger Berman Group LLC | 1,615,088 | $78.4M | 0.06% | −7,521−0.5% | Reduced |
| Federated Hermes, Inc. | 1,947,100 | $94.5M | 0.21% | +2,300+0.1% | Added |
| TD Asset Management Inc | 2,135,038 | $102.5M | 0.09% | +443,469+26.2% | Added |
| Vanguard Group Inc | 2,711,473 | $131.6M | 0.00% | +38,611+1.4% | Added |
| BlackRock, Inc. | 6,032,722 | $292.8M | 0.01% | +6,032,722 | New |
| Ellsworth Advisors, LLC | 0 | $0 | 0.00% | −86,391−100.0% | Sold out |
| Hussman Strategic Advisors, Inc. | 0 | $0 | 0.00% | −63,000−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −45,224−100.0% | Sold out |
| Jacobs Levy Equity Management, Inc | 0 | $0 | 0.00% | −28,616−100.0% | Sold out |
| Capital Impact Advisors, LLC | 0 | $0 | 0.00% | −16,425−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −12,430−100.0% | Sold out |
| Crossmark Global Holdings, Inc. | 0 | $0 | 0.00% | −11,300−100.0% | Sold out |
| Stephens Inc | 0 | $0 | 0.00% | −10,935−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −9,700−100.0% | Sold out |
| UniSuper Management Pty Ltd | 0 | $0 | 0.00% | −9,331−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −9,100−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −8,776−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −8,668−100.0% | Sold out |
| Capstone Investment Advisors, LLC | 0 | $0 | 0.00% | −7,944−100.0% | Sold out |
| Gallacher Capital Management LLC | 0 | $0 | 0.00% | −6,971−100.0% | Sold out |
| Deerfield Management Company, L.P. (Series C) | 0 | $0 | 0.00% | −6,623−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −6,487−100.0% | Sold out |
| Guggenheim Capital LLC | 0 | $0 | 0.00% | −6,184−100.0% | Sold out |
| MML Investors Services, LLC | 0 | $0 | 0.00% | −5,806−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −5,171−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −5,017−100.0% | Sold out |