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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 6,032,722 | $292.8M | 0.01% | +6,032,722 | New |
| Vanguard Group Inc | 2,711,473 | $131.6M | 0.00% | +38,611+1.4% | Added |
| TD Asset Management Inc | 2,135,038 | $102.5M | 0.09% | +443,469+26.2% | Added |
| Federated Hermes, Inc. | 1,947,100 | $94.5M | 0.21% | +2,300+0.1% | Added |
| Neuberger Berman Group LLC | 1,615,088 | $78.4M | 0.06% | −7,521−0.5% | Reduced |
| State Street Corp | 1,530,464 | $74.3M | 0.00% | +928+0.1% | Added |
| Fuller & Thaler Asset Management, Inc. | 1,260,767 | $61.2M | 0.24% | −12,051−0.9% | Reduced |
| Epoch Investment Partners, Inc. | 1,191,110 | $57.8M | 0.26% | +112,258+10.4% | Added |
| Dimensional Fund Advisors LP | 1,093,302 | $53.1M | 0.01% | +23,027+2.2% | Added |
| Geode Capital Management, LLC | 920,363 | $44.7M | 0.00% | +14,015+1.5% | Added |
| Morgan Stanley | 677,626 | $32.9M | 0.00% | +67,489+11.1% | Added |
| American Century Companies Inc | 639,592 | $31.0M | 0.02% | −100,816−13.6% | Reduced |
| Northern Trust Corp | 583,362 | $28.3M | 0.00% | +19,239+3.4% | Added |
| Price T Rowe Associates Inc | 568,894 | $27.6M | 0.00% | −15,012−2.6% | Reduced |
| Marshall Wace, LLP | 568,494 | $27.6M | 0.04% | +341,367+150.3% | Added |
| Boston Trust Walden Corp | 539,639 | $26.2M | 0.18% | +539,639 | New |
| Renaissance Technologies LLC | 489,400 | $23.8M | 0.04% | −48,300−9.0% | Reduced |
| Bessemer Group Inc | 477,021 | $23.1M | 0.04% | +10,793+2.3% | Added |
| Goldman Sachs Group Inc | 449,389 | $21.8M | 0.00% | +295,783+192.6% | Added |
| Mesirow Institutional Investment Management, Inc. | 413,949 | $20.1M | 1.53% | +60,502+17.1% | Added |
| Granite Investment Partners, LLC | 405,718 | $19.7M | 0.84% | +8,204+2.1% | Added |
| Charles Schwab Investment Management Inc | 350,056 | $17.0M | 0.00% | −9,166−2.6% | Reduced |
| Invesco Ltd. | 332,925 | $16.2M | 0.00% | −118,005−26.2% | Reduced |
| Portolan Capital Management, LLC | 327,764 | $15.9M | 1.15% | +218,901+201.1% | Added |
| Boone Capital Management LLC | 316,556 | $15.4M | 3.98% | −178,533−36.1% | Reduced |
| Nordea Investment Management AB | 266,863 | $13.0M | 0.01% | −13,721−4.9% | Reduced |
| Millennium Management LLC | 259,650 | $12.6M | 0.01% | −479,098−64.9% | Reduced |
| Bank of New York Mellon Corp | 253,751 | $12.3M | 0.00% | −36,203−12.5% | Reduced |
| Hotchkis & Wiley Capital Management LLC | 222,620 | $10.8M | 0.04% | +222,620 | New |
| Victory Capital Management Inc | 218,531 | $10.6M | 0.01% | +21,530+10.9% | Added |
| Nuveen Asset Management, LLC | 207,972 | $10.1M | 0.00% | −93,617−31.0% | Reduced |
| Principal Financial Group Inc | 202,017 | $9.80M | 0.01% | −16,155−7.4% | Reduced |
| Silvercrest Asset Management Group LLC | 168,472 | $8.18M | 0.06% | −1,104−0.7% | Reduced |
| Assenagon Asset Management S.A. | 167,355 | $8.12M | 0.02% | −22,250−11.7% | Reduced |
| Oberweis Asset Management Inc | 161,155 | $7.82M | 0.40% | +26,100+19.3% | Added |
| Bank of America Corp | 158,131 | $7.67M | 0.00% | +2,864+1.8% | Added |
| Clark Capital Management Group, Inc. | 153,747 | $7.46M | 0.05% | +56,337+57.8% | Added |
| Janus Henderson Group PLC | 147,045 | $7.14M | 0.00% | −9,219−5.9% | Reduced |
| Ameriprise Financial Inc | 144,598 | $7.02M | 0.00% | +20,685+16.7% | Added |
| Citadel Advisors LLC | 135,237 | $6.56M | 0.01% | −127,914−48.6% | Reduced |
| Lam Group, Inc. | 130,800 | $6.35M | 4.49% | 00.0% | Unchanged |
| Frontier Capital Management Co LLC | 123,619 | $6.00M | 0.06% | −1,149−0.9% | Reduced |
| Voloridge Investment Management, LLC | 123,445 | $5.99M | 0.02% | −78,028−38.7% | Reduced |
| Qube Research & Technologies Ltd | 116,678 | $5.66M | 0.01% | −89,541−43.4% | Reduced |
| Raymond James & Associates | 116,677 | $5.66M | 0.00% | +1,958+1.7% | Added |
| Legal & General Group Plc | 104,323 | $5.06M | 0.00% | −1,526−1.4% | Reduced |
| Weiss Asset Management LP | 102,358 | $4.97M | 0.13% | +102,358 | New |
| UBS Group AG | 101,032 | $4.90M | 0.00% | −21,649−17.6% | Reduced |
| Moody Aldrich Partners LLC | 100,340 | $4.87M | 0.89% | +44,606+80.0% | Added |
| Two Sigma Investments, LP | 98,798 | $4.79M | 0.01% | +2,368+2.5% | Added |
| Two Sigma Advisers, LP | 98,300 | $4.77M | 0.01% | −7,800−7.4% | Reduced |
| BNP Paribas Arbitrage, SA | 94,466 | $4.58M | 0.00% | +35,284+59.6% | Added |
| Mutual of America Capital Management LLC | 92,357 | $4.48M | 0.05% | −1,372−1.5% | Reduced |
| Trexquant Investment LP | 89,280 | $4.33M | 0.05% | −16,465−15.6% | Reduced |
| Rhumbline Advisers | 86,114 | $4.18M | 0.00% | −4,473−4.9% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 83,673 | $4.06M | 0.02% | −20,448−19.6% | Reduced |
| PDT Partners, LLC | 81,184 | $3.94M | 0.35% | +71,482+736.8% | Added |
| Public Sector Pension Investment Board | 80,587 | $3.91M | 0.02% | −3,300−3.9% | Reduced |
| LSV Asset Management | 80,400 | $3.90M | 0.01% | 00.0% | Unchanged |
| Danske Bank A/S | 80,080 | $3.89M | 0.01% | +80,080 | New |
| UBS Asset Management Americas Inc | 76,445 | $3.71M | 0.00% | −9,358−10.9% | Reduced |
| Swiss National Bank | 76,400 | $3.71M | 0.00% | −600−0.8% | Reduced |
| Brandywine Global Investment Management, LLC | 75,053 | $3.70M | 0.02% | +938+1.3% | Added |
| Barclays PLC | 74,456 | $3.61M | 0.00% | +25,878+53.3% | Added |
| JPMorgan Chase & Co | 73,920 | $3.59M | 0.00% | +2,349+3.3% | Added |
| Bridge City Capital, LLC | 71,079 | $3.45M | 0.95% | +22,133+45.2% | Added |
| New York State Common Retirement Fund | 70,490 | $3.42M | 0.00% | +4,763+7.2% | Added |
| Renaissance Group LLC | 69,876 | $3.39M | 0.14% | +4,858+7.5% | Added |
| Algert Global LLC | 66,285 | $3.22M | 0.09% | +66,285 | New |
| Jane Street Group, LLC | 63,614 | $3.09M | 0.00% | −33,100−34.2% | Reduced |
| State of Wisconsin Investment Board | 59,231 | $2.87M | 0.01% | +27,935+89.3% | Added |
| Citigroup Inc | 57,812 | $2.81M | 0.00% | +22,817+65.2% | Added |
| Aurora Investment Counsel | 54,698 | $2.65M | 1.44% | +232+0.4% | Added |
| Alliancebernstein L.P. | 49,741 | $2.41M | 0.00% | −29−0.1% | Reduced |
| Assetmark, Inc | 43,906 | $2.13M | 0.01% | +3,650+9.1% | Added |
| Wells Fargo & Company | 42,688 | $2.07M | 0.00% | −29,098−40.5% | Reduced |
| AQR Capital Management LLC | 41,667 | $2.02M | 0.00% | −14,129−25.3% | Reduced |
| SEI Investments Co | 41,228 | $2.00M | 0.00% | +14,685+55.3% | Added |
| Martingale Asset Management L P | 40,265 | $1.95M | 0.04% | +1,000+2.5% | Added |
| Prudential Financial Inc | 39,324 | $1.91M | 0.00% | −2,101−5.1% | Reduced |
| Point72 Asset Management, L.P. | 38,817 | $1.88M | 0.01% | −197,019−83.5% | Reduced |
| Glenmede Trust Co NA | 37,884 | $1.84M | 0.01% | +22,439+145.3% | Added |
| California State Teachers Retirement System | 36,964 | $1.79M | 0.00% | −1,153−3.0% | Reduced |
| Great West Life Assurance Co | 36,947 | $1.79M | 0.00% | −12,175−24.8% | Reduced |
| Taika Capital, LP | 36,775 | $1.78M | 1.34% | +36,775 | New |
| Gotham Asset Management, LLC | 35,738 | $1.73M | 0.02% | +8,063+29.1% | Added |
| Advisor Group Holdings, Inc. | 35,463 | $1.72M | 0.00% | +14,696+70.8% | Added |
| SG Americas Securities, LLC | 35,234 | $1.71M | 0.01% | +35,234 | New |
| Envestnet Asset Management Inc | 34,666 | $1.68M | 0.00% | +9,306+36.7% | Added |
| FMR LLC | 34,335 | $1.67M | 0.00% | +6,583+23.7% | Added |
| AlphaCentric Advisors LLC | 30,000 | $1.46M | 1.08% | +5,000+20.0% | Added |
| Thrivent Financial for Lutherans | 29,815 | $1.45M | 0.00% | −1,850−5.8% | Reduced |
| Chase Investment Counsel Corp | 29,000 | $1.41M | 0.47% | +29,000 | New |
| Franklin Resources Inc | 28,465 | $1.40M | 0.00% | −175−0.6% | Reduced |
| Chatham Capital Group, Inc. | 27,690 | $1.34M | 0.22% | +27,690 | New |
| Arkadios Wealth Advisors | 26,585 | $1.29M | 0.07% | +830+3.2% | Added |
| Royal Bank of Canada | 26,514 | $1.29M | 0.00% | −6,670−20.1% | Reduced |
| Engineers Gate Manager LP | 26,450 | $1.28M | 0.03% | −9,245−25.9% | Reduced |
| Advisor OS, LLC | 26,033 | $1.26M | 0.13% | +21+0.1% | Added |
| Allspring Global Investments Holdings, LLC | 24,263 | $1.18M | 0.00% | −16,683−40.7% | Reduced |