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 $572.4M in total; no superinvestor holds it.
13F holders, Q2 2023
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Jun 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
- 246
- +28 vs. Q1 2023
- Shares held
- 31.4M
- +1.20M (+4.0%) vs. Q1 2023
- Total value
- $1.80B
- +$671.1M (+59.2%) vs. Q1 2023
- New holders
- 50
- 80 more added
- Sold out
- 22
- 90 more reduced
Compare with Q1 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 | $572.4M |
| Q1 2026 | 215 | $634.0M |
| Q4 2025 | 236 | $937.5M |
| Q3 2025 | 243 | $880.0M |
| Q2 2025 | 245 | $759.3M |
| Q1 2025 | 241 | $964.1M |
| Q4 2024 | 264 | $1.31B |
| Q3 2024 | 279 | $1.72B |
| Q2 2024 | 269 | $1.38B |
| Q1 2024 | 271 | $1.53B |
| Q4 2023 | 277 | $2.10B |
| Q3 2023 | 256 | $1.47B |
| Q2 2023 | 246 | $1.80B |
| Q1 2023 | 218 | $1.13B |
| Q4 2022 | 213 | $816.9M |
| Q3 2022 | 208 | $846.0M |
| Q2 2022 | 223 | $1.07B |
| Q1 2022 | 203 | $1.07B |
| Q4 2021 | 168 | $680.5M |
| Q3 2021 | 140 | $530.8M |
| Q2 2021 | 146 | $549.6M |
| Q1 2021 | 135 | $476.9M |
Institutions, Q2 2023
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q1 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 6,088,227 | $349.9M | 0.01% | −478,849−7.3% | Reduced |
| Federated Hermes, Inc. | 3,428,930 | $197.1M | 0.49% | +42,317+1.2% | Added |
| Vanguard Group Inc | 2,773,609 | $159.4M | 0.00% | +122,004+4.6% | Added |
| Dimensional Fund Advisors LP | 1,930,615 | $110.9M | 0.04% | +13,044+0.7% | Added |
| Neuberger Berman Group LLC | 1,490,284 | $85.6M | 0.08% | +1,059,032+245.6% | Added |
| State Street Corp | 1,394,504 | $80.1M | 0.00% | +35,009+2.6% | Added |
| Fuller & Thaler Asset Management, Inc. | 1,279,495 | $73.5M | 0.42% | +467,801+57.6% | Added |
| Geode Capital Management, LLC | 780,259 | $44.8M | 0.01% | +20,278+2.7% | Added |
| Northern Trust Corp | 635,443 | $36.5M | 0.01% | −13,785−2.1% | Reduced |
| Morgan Stanley | 566,815 | $32.6M | 0.00% | +46,772+9.0% | Added |
| Invesco Ltd. | 560,674 | $32.2M | 0.01% | −32,095−5.4% | Reduced |
| Granite Investment Partners, LLC | 533,159 | $30.6M | 1.22% | −3,662−0.7% | Reduced |
| Price T Rowe Associates Inc | 506,308 | $29.1M | 0.00% | +37,888+8.1% | Added |
| Renaissance Technologies LLC | 492,583 | $28.3M | 0.04% | −4,217−0.8% | Reduced |
| Jacobs Levy Equity Management, Inc | 383,208 | $22.0M | 0.13% | +256,827+203.2% | Added |
| Nuveen Asset Management, LLC | 374,519 | $21.5M | 0.01% | +56,195+17.7% | Added |
| Bank of New York Mellon Corp | 342,121 | $19.7M | 0.00% | −5,091−1.5% | Reduced |
| Nordea Investment Management AB | 338,792 | $19.4M | 0.03% | +8,579+2.6% | Added |
| Charles Schwab Investment Management Inc | 328,262 | $18.9M | 0.01% | −1,651−0.5% | Reduced |
| Goldman Sachs Group Inc | 284,574 | $16.4M | 0.00% | +62,899+28.4% | Added |
| Principal Financial Group Inc | 228,759 | $13.1M | 0.01% | −3,981−1.7% | Reduced |
| Millennium Management LLC | 228,230 | $13.1M | 0.01% | −115,330−33.6% | Reduced |
| LSV Asset Management | 212,368 | $12.2M | 0.03% | +179,168+539.7% | Added |
| Voloridge Investment Management, LLC | 187,939 | $10.8M | 0.05% | +114,995+157.6% | Added |
| Portolan Capital Management, LLC | 182,243 | $10.5M | 0.93% | −158,350−46.5% | Reduced |
| Citadel Advisors LLC | 177,950 | $10.2M | 0.01% | +146,609+467.8% | Added |
| Ameriprise Financial Inc | 163,354 | $9.39M | 0.00% | −5,885−3.5% | Reduced |
| TD Asset Management Inc | 158,058 | $9.08M | 0.01% | +151,558+2,331.7% | Added |
| Oberweis Asset Management Inc | 147,800 | $8.49M | 1.03% | −30,400−17.1% | Reduced |
| Frontier Capital Management Co LLC | 145,896 | $8.38M | 0.08% | −41,164−22.0% | Reduced |
| Epoch Investment Partners, Inc. | 132,096 | $7.59M | 0.04% | +132,096 | New |
| American Century Companies Inc | 131,609 | $7.56M | 0.01% | +10,788+8.9% | Added |
| Mesirow Institutional Investment Management, Inc. | 129,462 | $7.44M | 0.77% | −196,207−60.2% | Reduced |
| Bank of America Corp | 128,314 | $7.37M | 0.00% | −162,423−55.9% | Reduced |
| Lam Group, Inc. | 128,000 | $7.36M | 6.85% | −2,250−1.7% | Reduced |
| D. E. Shaw & Co., Inc. | 123,599 | $7.10M | 0.01% | −13,714−10.0% | Reduced |
| Cubist Systematic Strategies, LLC | 121,026 | $6.96M | 0.08% | +61,052+101.8% | Added |
| Mutual of America Capital Management LLC | 110,186 | $6.33M | 0.07% | −937−0.8% | Reduced |
| Silvercrest Asset Management Group LLC | 109,647 | $6.30M | 0.04% | −45,221−29.2% | Reduced |
| Legal & General Group Plc | 109,425 | $6.29M | 0.00% | +14,663+15.5% | Added |
| Beacon Harbor Wealth Advisors, Inc. | 105,005 | $6.04M | 1.98% | +105,005 | New |
| First Trust Advisors LP | 101,937 | $5.86M | 0.01% | +61,604+152.7% | Added |
| Hillsdale Investment Management Inc. | 100,208 | $5.76M | 0.53% | −54,830−35.4% | Reduced |
| 1832 Asset Management L.P. | 100,000 | $5.75M | 0.01% | +100,000 | New |
| Janus Henderson Group PLC | 97,075 | $5.58M | 0.00% | −6,866−6.6% | Reduced |
| Rhumbline Advisers | 90,953 | $5.23M | 0.01% | −140.0% | Reduced |
| Thrivent Financial for Lutherans | 88,131 | $5.07M | 0.01% | +50,772+135.9% | Added |
| Swiss National Bank | 84,000 | $4.83M | 0.00% | +600+0.7% | Added |
| JPMorgan Chase & Co | 83,848 | $4.82M | 0.00% | −33,919−28.8% | Reduced |
| AXA S.A. | 75,600 | $4.34M | 0.01% | −76,255−50.2% | Reduced |
| Two Sigma Advisers, LP | 72,600 | $4.17M | 0.01% | +13,500+22.8% | Added |
| Squarepoint Ops LLC | 69,628 | $4.00M | 0.02% | +58,372+518.6% | Added |
| Eagle Asset Management Inc | 69,589 | $4.00M | 0.02% | −237,181−77.3% | Reduced |
| BNP Paribas Arbitrage, SA | 67,372 | $3.87M | 0.01% | +35,574+111.9% | Added |
| Public Sector Pension Investment Board | 66,836 | $3.84M | 0.03% | +534+0.8% | Added |
| Penserra Capital Management LLC | 64,291 | $3.69M | 0.07% | +64,291 | New |
| New York State Common Retirement Fund | 63,116 | $3.63M | 0.00% | +3,330+5.6% | Added |
| AQR Capital Management LLC | 59,036 | $3.39M | 0.01% | −51,851−46.8% | Reduced |
| Raymond James & Associates | 55,168 | $3.17M | 0.00% | +31,607+134.1% | Added |
| Algert Global LLC | 51,380 | $2.95M | 0.13% | +21,060+69.5% | Added |
| Credit Suisse AG | 51,185 | $2.94M | 0.00% | −6,771−11.7% | Reduced |
| Alliancebernstein L.P. | 50,080 | $2.88M | 0.00% | +5,183+11.5% | Added |
| California State Teachers Retirement System | 46,564 | $2.68M | 0.00% | −1,652−3.4% | Reduced |
| Prudential Financial Inc | 46,508 | $2.67M | 0.00% | +9,391+25.3% | Added |
| Exchange Traded Concepts, LLC | 46,093 | $2.65M | 0.07% | −490−1.1% | Reduced |
| Renaissance Group LLC | 44,609 | $2.56M | 0.11% | −2,250−4.8% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 42,563 | $2.45M | 0.02% | +2,647+6.6% | Added |
| Martingale Asset Management L P | 41,563 | $2.39M | 0.05% | −605−1.4% | Reduced |
| Citigroup Inc | 37,749 | $2.17M | 0.00% | +13,000+52.5% | Added |
| Russell Investments Group, Ltd. | 36,704 | $2.11M | 0.00% | +488+1.3% | Added |
| Wells Fargo & Company | 36,492 | $2.10M | 0.00% | +19,401+113.5% | Added |
| Susquehanna International Group, LLP | 34,937 | $2.01M | 0.00% | −7,440−17.6% | Reduced |
| Clark Capital Management Group, Inc. | 34,632 | $1.99M | 0.02% | +34,632 | New |
| State of Wisconsin Investment Board | 33,409 | $1.92M | 0.01% | −1,830−5.2% | Reduced |
| Texas Permanent School Fund | 33,153 | $1.91M | 0.02% | −655−1.9% | Reduced |
| Great West Life Assurance Co | 32,537 | $1.87M | 0.00% | −2,953−8.3% | Reduced |
| Assetmark, Inc | 31,097 | $1.79M | 0.01% | +1,424+4.8% | Added |
| Quantedge Capital Pte Ltd | 31,089 | $1.79M | 0.79% | +24,700+386.6% | Added |
| Barclays PLC | 30,257 | $1.74M | 0.00% | −11,057−26.8% | Reduced |
| FMR LLC | 30,216 | $1.74M | 0.00% | +61+0.2% | Added |
| Two Sigma Investments, LP | 30,010 | $1.72M | 0.00% | +30,010 | New |
| D.A. Davidson & Co. | 29,887 | $1.72M | 0.02% | −15,187−33.7% | Reduced |
| Virginia Retirement Systems Et Al | 29,300 | $1.68M | 0.02% | +2,400+8.9% | Added |
| Arrowstreet Capital, Limited Partnership | 29,099 | $1.67M | 0.00% | −45,175−60.8% | Reduced |
| Victory Capital Management Inc | 28,936 | $1.66M | 0.00% | −14,802−33.8% | Reduced |
| Tucker Asset Management LLC | 27,802 | $1.60M | 0.46% | −3,870−12.2% | Reduced |
| Franklin Resources Inc | 27,586 | $1.59M | 0.00% | +18,053+189.4% | Added |
| New York State Teachers Retirement System | 27,534 | $1.58M | 0.00% | +1,360+5.2% | Added |
| Los Angeles Capital Management LLC | 27,085 | $1.56M | 0.01% | +610+2.3% | Added |
| Roman Butler Fullerton & Co | 24,710 | $1.54M | 0.71% | +24,710 | New |
| Jackson Creek Investment Advisors LLC | 26,758 | $1.54M | 0.61% | +881+3.4% | Added |
| UBS Asset Management Americas Inc | 39,051 | $1.46M | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 25,449 | $1.46M | 0.00% | +21,460+538.0% | Added |
| State of Alaska, Department of Revenue | 24,759 | $1.42M | 0.02% | −1,056−4.1% | Reduced |
| Tudor Investment Corp Et Al | 24,107 | $1.39M | 0.02% | +8,097+50.6% | Added |
| Bridge City Capital, LLC | 22,814 | $1.31M | 0.62% | +22,814 | New |
| State of Tennessee, Treasury Department | 22,426 | $1.29M | 0.01% | +1,680+8.1% | Added |
| Shaker Investments LLC | 20,952 | $1.20M | 0.61% | −61,301−74.5% | Reduced |
| Zacks Investment Management | 20,686 | $1.19M | 0.01% | +20,686 | New |
| MetLife Investment Management | 20,467 | $1.18M | 0.01% | 00.0% | Unchanged |