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 |
|---|---|---|---|---|---|
| BlackRock Inc. | 6,090,259 | $280.1M | 0.01% | +2,0320.0% | Added |
| Federated Hermes, Inc. | 3,442,234 | $158.3M | 0.42% | +13,304+0.4% | Added |
| Vanguard Group Inc | 2,767,393 | $127.3M | 0.00% | −6,216−0.2% | Reduced |
| Dimensional Fund Advisors LP | 1,887,738 | $86.8M | 0.03% | −42,877−2.2% | Reduced |
| Neuberger Berman Group LLC | 1,487,979 | $68.4M | 0.06% | −2,305−0.2% | Reduced |
| State Street Corp | 1,459,491 | $67.1M | 0.00% | +64,987+4.7% | Added |
| Fuller & Thaler Asset Management, Inc. | 1,275,214 | $58.6M | 0.34% | −4,281−0.3% | Reduced |
| Geode Capital Management, LLC | 809,626 | $37.2M | 0.00% | +29,367+3.8% | Added |
| Renaissance Technologies LLC | 603,100 | $27.7M | 0.05% | +110,517+22.4% | Added |
| Price T Rowe Associates Inc | 569,712 | $26.2M | 0.00% | +63,404+12.5% | Added |
| Northern Trust Corp | 559,423 | $25.7M | 0.00% | −76,020−12.0% | Reduced |
| Morgan Stanley | 558,209 | $25.7M | 0.00% | −8,606−1.5% | Reduced |
| Jacobs Levy Equity Management, Inc | 554,850 | $25.5M | 0.15% | +171,642+44.8% | Added |
| Invesco Ltd. | 410,629 | $18.9M | 0.01% | −150,045−26.8% | Reduced |
| Voloridge Investment Management, LLC | 371,310 | $17.1M | 0.08% | +183,371+97.6% | Added |
| Nuveen Asset Management, LLC | 353,959 | $16.3M | 0.01% | −20,560−5.5% | Reduced |
| Charles Schwab Investment Management Inc | 352,378 | $16.2M | 0.00% | +24,116+7.3% | Added |
| Nordea Investment Management AB | 338,443 | $15.7M | 0.02% | −349−0.1% | Reduced |
| Granite Investment Partners, LLC | 330,911 | $15.2M | 0.64% | −202,248−37.9% | Reduced |
| Bank of New York Mellon Corp | 326,507 | $15.0M | 0.00% | −15,614−4.6% | Reduced |
| Millennium Management LLC | 296,307 | $13.6M | 0.01% | +68,077+29.8% | Added |
| Goldman Sachs Group Inc | 294,461 | $13.5M | 0.00% | +9,887+3.5% | Added |
| LSV Asset Management | 212,368 | $9.77M | 0.02% | 00.0% | Unchanged |
| Principal Financial Group Inc | 210,036 | $9.66M | 0.01% | −18,723−8.2% | Reduced |
| American Century Companies Inc | 200,277 | $9.21M | 0.01% | +68,668+52.2% | Added |
| Mesirow Institutional Investment Management, Inc. | 183,805 | $8.45M | 0.86% | +54,343+42.0% | Added |
| Oberweis Asset Management Inc | 152,500 | $7.01M | 0.74% | +4,700+3.2% | Added |
| Ameriprise Financial Inc | 149,669 | $6.88M | 0.00% | −13,685−8.4% | Reduced |
| Bessemer Group Inc | 148,144 | $6.81M | 0.01% | +147,824+46,195.0% | Added |
| TD Asset Management Inc | 144,558 | $6.65M | 0.01% | −13,500−8.5% | Reduced |
| Bank of America Corp | 134,832 | $6.20M | 0.00% | +6,518+5.1% | Added |
| Portolan Capital Management, LLC | 132,850 | $6.11M | 0.57% | −49,393−27.1% | Reduced |
| Epoch Investment Partners, Inc. | 132,057 | $6.07M | 0.04% | −390.0% | Reduced |
| Alliancebernstein L.P. | 131,950 | $6.07M | 0.00% | +81,870+163.5% | Added |
| Russell Investments Group, Ltd. | 130,521 | $6.00M | 0.01% | +93,817+255.6% | Added |
| Citadel Advisors LLC | 128,715 | $5.92M | 0.01% | −49,235−27.7% | Reduced |
| Lam Group, Inc. | 128,000 | $5.89M | 5.78% | 00.0% | Unchanged |
| Frontier Capital Management Co LLC | 127,326 | $5.86M | 0.06% | −18,570−12.7% | Reduced |
| BNP Paribas Arbitrage, SA | 122,480 | $5.63M | 0.01% | +55,108+81.8% | Added |
| Janus Henderson Group PLC | 112,580 | $5.18M | 0.00% | +15,505+16.0% | Added |
| Legal & General Group Plc | 106,950 | $4.92M | 0.00% | −2,475−2.3% | Reduced |
| Beacon Harbor Wealth Advisors, Inc. | 103,095 | $4.74M | 1.58% | −1,910−1.8% | Reduced |
| Qube Research & Technologies Ltd | 102,324 | $4.71M | 0.01% | +96,167+1,561.9% | Added |
| Squarepoint Ops LLC | 101,502 | $4.67M | 0.02% | +31,874+45.8% | Added |
| D. E. Shaw & Co., Inc. | 100,173 | $4.61M | 0.01% | −23,426−19.0% | Reduced |
| Hillsdale Investment Management Inc. | 96,548 | $4.44M | 0.41% | −3,660−3.7% | Reduced |
| Two Sigma Investments, LP | 95,484 | $4.39M | 0.01% | +65,474+218.2% | Added |
| Rhumbline Advisers | 93,512 | $4.30M | 0.00% | +2,559+2.8% | Added |
| Mutual of America Capital Management LLC | 91,570 | $4.21M | 0.05% | −18,616−16.9% | Reduced |
| Two Sigma Advisers, LP | 85,400 | $3.93M | 0.01% | +12,800+17.6% | Added |
| Swiss National Bank | 84,900 | $3.90M | 0.00% | +900+1.1% | Added |
| Silvercrest Asset Management Group LLC | 83,246 | $3.83M | 0.03% | −26,401−24.1% | Reduced |
| Cubist Systematic Strategies, LLC | 82,907 | $3.81M | 0.05% | −38,119−31.5% | Reduced |
| JPMorgan Chase & Co | 80,549 | $3.70M | 0.00% | −3,299−3.9% | Reduced |
| First Trust Advisors LP | 79,063 | $3.64M | 0.00% | −22,874−22.4% | Reduced |
| Thrivent Financial for Lutherans | 63,930 | $2.94M | 0.01% | −24,201−27.5% | Reduced |
| AXA S.A. | 62,900 | $2.89M | 0.01% | −12,700−16.8% | Reduced |
| Clark Capital Management Group, Inc. | 58,005 | $2.67M | 0.03% | +23,373+67.5% | Added |
| Raymond James & Associates | 52,743 | $2.43M | 0.00% | −2,425−4.4% | Reduced |
| Credit Suisse AG | 51,487 | $2.37M | 0.00% | +302+0.6% | Added |
| SG Americas Securities, LLC | 50,727 | $2.33M | 0.03% | +50,727 | New |
| New York State Common Retirement Fund | 48,327 | $2.22M | 0.00% | −14,789−23.4% | Reduced |
| Public Sector Pension Investment Board | 47,100 | $2.17M | 0.02% | −19,736−29.5% | Reduced |
| UBS Asset Management Americas Inc | 46,717 | $2.15M | 0.00% | +7,666+19.6% | Added |
| State of New Jersey Common Pension Fund D | 45,960 | $2.11M | 0.01% | +45,960 | New |
| Renaissance Group LLC | 45,496 | $2.09M | 0.10% | +887+2.0% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 45,000 | $2.07M | 0.01% | +45,000 | New |
| Prudential Financial Inc | 44,605 | $2.05M | 0.00% | −1,903−4.1% | Reduced |
| State of Wisconsin Investment Board | 43,003 | $1.98M | 0.01% | +9,594+28.7% | Added |
| California State Teachers Retirement System | 42,523 | $1.96M | 0.00% | −4,041−8.7% | Reduced |
| Citigroup Inc | 41,590 | $1.91M | 0.00% | +3,841+10.2% | Added |
| Jane Street Group, LLC | 40,111 | $1.84M | 0.00% | +23,297+138.6% | Added |
| Walleye Capital LLC | 39,854 | $1.83M | 0.03% | +39,854 | New |
| Martingale Asset Management L P | 39,781 | $1.83M | 0.04% | −1,782−4.3% | Reduced |
| Monashee Investment Management LLC | 39,461 | $1.81M | 0.76% | +39,461 | New |
| Eagle Asset Management Inc | 37,701 | $1.73M | 0.01% | −31,888−45.8% | Reduced |
| Jump Financial, LLC | 37,276 | $1.71M | 0.06% | +37,276 | New |
| Quantedge Capital Pte Ltd | 36,389 | $1.67M | 0.91% | +5,300+17.0% | Added |
| Summit Global Investments | 36,238 | $1.67M | 0.11% | +16,394+82.6% | Added |
| Great West Life Assurance Co | 33,317 | $1.53M | 0.00% | +780+2.4% | Added |
| Texas Permanent School Fund | 32,364 | $1.49M | 0.01% | −789−2.4% | Reduced |
| Assetmark, Inc | 31,191 | $1.43M | 0.01% | +94+0.3% | Added |
| Susquehanna International Group, LLP | 29,325 | $1.35M | 0.00% | −5,612−16.1% | Reduced |
| AQR Capital Management LLC | 28,990 | $1.33M | 0.00% | −30,046−50.9% | Reduced |
| Tucker Asset Management LLC | 28,950 | $1.33M | 0.36% | +1,148+4.1% | Added |
| Arrowstreet Capital, Limited Partnership | 28,230 | $1.30M | 0.00% | −869−3.0% | Reduced |
| Wells Fargo & Company | 28,223 | $1.30M | 0.00% | −8,269−22.7% | Reduced |
| New York State Teachers Retirement System | 27,541 | $1.27M | 0.00% | +70.0% | Added |
| Los Angeles Capital Management LLC | 27,443 | $1.26M | 0.01% | +358+1.3% | Added |
| D.A. Davidson & Co. | 26,829 | $1.23M | 0.01% | −3,058−10.2% | Reduced |
| FMR LLC | 26,822 | $1.23M | 0.00% | −3,394−11.2% | Reduced |
| Franklin Resources Inc | 26,750 | $1.23M | 0.00% | −836−3.0% | Reduced |
| SEI Investments Co | 26,556 | $1.22M | 0.00% | +20,370+329.3% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 25,477 | $1.17M | 0.01% | −17,086−40.1% | Reduced |
| Lisanti Capital Growth, LLC | 25,175 | $1.16M | 0.18% | +25,175 | New |
| Tudor Investment Corp Et Al | 24,503 | $1.13M | 0.02% | +396+1.6% | Added |
| Victory Capital Management Inc | 24,460 | $1.12M | 0.00% | −4,476−15.5% | Reduced |
| Barclays PLC | 23,793 | $1.09M | 0.00% | −6,464−21.4% | Reduced |
| State of Alaska, Department of Revenue | 23,727 | $1.09M | 0.01% | −1,032−4.2% | Reduced |
| Virginia Retirement Systems Et Al | 22,800 | $1.05M | 0.01% | −6,500−22.2% | Reduced |