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, Q1 2022
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Mar 31, 2022. 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
- 203
- +36 vs. Q4 2021
- Shares held
- 29.8M
- +671.0K (+2.3%) vs. Q4 2021
- Total value
- $1.07B
- +$392.5M (+57.8%) vs. Q4 2021
- New holders
- 55
- 69 more added
- Sold out
- 19
- 61 more reduced
1 institution that held it in Q4 2021 haven't filed for Q1 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2021: 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, Q1 2022
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q4 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 7,103,524 | $255.0M | 0.01% | −57,141−0.8% | Reduced |
| Federated Hermes, Inc. | 3,487,430 | $125.2M | 0.28% | +23,095+0.7% | Added |
| Vanguard Group Inc | 2,483,205 | $89.1M | 0.00% | +15,094+0.6% | Added |
| Dimensional Fund Advisors LP | 1,796,269 | $64.5M | 0.02% | +25,418+1.4% | Added |
| State Street Corp | 1,321,951 | $47.5M | 0.00% | −117,256−8.1% | Reduced |
| Invesco Ltd. | 733,842 | $26.3M | 0.01% | +36,953+5.3% | Added |
| Geode Capital Management, LLC | 703,479 | $25.3M | 0.00% | −11,394−1.6% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 614,855 | $22.1M | 0.13% | +3,393+0.6% | Added |
| Morgan Stanley | 562,395 | $20.2M | 0.00% | −56,347−9.1% | Reduced |
| Nuveen Asset Management, LLC | 476,675 | $16.9M | 0.01% | +93,448+24.4% | Added |
| Assenagon Asset Management S.A. | 427,605 | $15.4M | 0.05% | −100,073−19.0% | Reduced |
| Northern Trust Corp | 404,142 | $14.5M | 0.00% | −17,809−4.2% | Reduced |
| Bank of New York Mellon Corp | 401,405 | $14.4M | 0.00% | +30,462+8.2% | Added |
| Arrowstreet Capital, Limited Partnership | 391,585 | $14.1M | 0.02% | −24,464−5.9% | Reduced |
| Janus Henderson Group PLC | 363,504 | $13.0M | 0.01% | −609,689−62.6% | Reduced |
| Parametric Portfolio Associates LLC | 339,347 | $12.2M | 0.01% | +174,951+106.4% | Added |
| Renaissance Technologies LLC | 308,700 | $11.1M | 0.01% | +18,900+6.5% | Added |
| Nordea Investment Management AB | 284,391 | $10.4M | 0.01% | +10,931+4.0% | Added |
| Charles Schwab Investment Management Inc | 268,398 | $9.64M | 0.00% | +7,463+2.9% | Added |
| Principal Financial Group Inc | 266,904 | $9.58M | 0.01% | −14,036−5.0% | Reduced |
| MESIROW FINANCIAL INVESTMENT MANAGEMENT - Equity & Fixed Income | 251,659 | $9.04M | 1.00% | +251,659 | New |
| Frontier Capital Management Co LLC | 251,272 | $9.02M | 0.08% | −936−0.4% | Reduced |
| Silvercrest Asset Management Group LLC | 241,701 | $8.68M | 0.06% | −127,250−34.5% | Reduced |
| Citadel Advisors LLC | 237,883 | $8.54M | 0.01% | +24,361+11.4% | Added |
| Hillsdale Investment Management Inc. | 234,338 | $8.41M | 0.54% | +234,338 | New |
| Ameriprise Financial Inc | 187,784 | $6.74M | 0.00% | −1,725−0.9% | Reduced |
| Penserra Capital Management LLC | 178,801 | $6.42M | 0.15% | +178,801 | New |
| Eagle Asset Management Inc | 177,339 | $6.37M | 0.03% | −74,277−29.5% | Reduced |
| Millennium Management LLC | 173,321 | $6.22M | 0.01% | +100,140+136.8% | Added |
| Friess Associates LLC | 154,415 | $5.54M | 2.96% | +154,415 | New |
| Russell Investments Group, Ltd. | 154,339 | $5.54M | 0.01% | +26,118+20.4% | Added |
| Cubist Systematic Strategies, LLC | 140,229 | $5.03M | 0.04% | +101,720+264.1% | Added |
| LSV Asset Management | 139,753 | $5.02M | 0.01% | +54,907+64.7% | Added |
| BNP Paribas Arbitrage, SA | 139,026 | $4.99M | 0.01% | −15,159−9.8% | Reduced |
| EAM Investors, LLC | 124,697 | $4.48M | 0.83% | +124,697 | New |
| Goldman Sachs Group Inc | 116,488 | $4.18M | 0.00% | −472,335−80.2% | Reduced |
| Jacobs Levy Equity Management, Inc | 112,516 | $4.04M | 0.03% | −74,813−39.9% | Reduced |
| Acadian Asset Management LLC | 110,148 | $3.95M | 0.02% | +87,113+378.2% | Added |
| Clark Capital Management Group, Inc. | 95,629 | $3.43M | 0.04% | +15,535+19.4% | Added |
| Calamos Advisors LLC | 94,643 | $3.40M | 0.01% | +94,643 | New |
| Voloridge Investment Management, LLC | 94,070 | $3.38M | 0.02% | +94,070 | New |
| EAM Global Investors LLC | 91,702 | $3.29M | 0.61% | +91,702 | New |
| Swiss National Bank | 90,500 | $3.25M | 0.00% | +6,700+8.0% | Added |
| JPMorgan Chase & Co | 88,468 | $3.18M | 0.00% | −22,047−19.9% | Reduced |
| Legal & General Group Plc | 87,191 | $3.13M | 0.00% | −684−0.8% | Reduced |
| Martingale Asset Management L P | 83,136 | $2.99M | 0.04% | −18,866−18.5% | Reduced |
| Allspring Global Investments Holdings, LLC | 82,053 | $2.94M | 0.00% | −169,908−67.4% | Reduced |
| Prudential Financial Inc | 80,885 | $2.90M | 0.00% | −24,020−22.9% | Reduced |
| Wells Fargo & Company | 80,685 | $2.90M | 0.00% | +8,348+11.5% | Added |
| Rhumbline Advisers | 79,995 | $2.87M | 0.00% | +2,019+2.6% | Added |
| American Century Companies Inc | 78,230 | $2.81M | 0.00% | −15,282−16.3% | Reduced |
| Globeflex Capital L P | 72,300 | $2.60M | 0.53% | −46−0.1% | Reduced |
| Public Sector Pension Investment Board | 68,772 | $2.47M | 0.02% | −6,180−8.2% | Reduced |
| D. E. Shaw & Co., Inc. | 65,139 | $2.34M | 0.00% | +38,370+143.3% | Added |
| Victory Capital Management Inc | 62,699 | $2.22M | 0.00% | −8,904−12.4% | Reduced |
| Bank of America Corp | 61,229 | $2.20M | 0.00% | +4,904+8.7% | Added |
| LPL Financial LLC | 59,466 | $2.13M | 0.00% | +59,466 | New |
| Susquehanna International Group, LLP | 55,582 | $2.00M | 0.00% | +55,582 | New |
| Exchange Traded Concepts, LLC | 52,681 | $1.89M | 0.04% | +27,698+110.9% | Added |
| Barclays PLC | 52,345 | $1.88M | 0.00% | −21,085−28.7% | Reduced |
| Jump Financial, LLC | 51,304 | $1.84M | 0.08% | +22,504+78.1% | Added |
| D.A. Davidson & Co. | 51,134 | $1.84M | 0.02% | +51,134 | New |
| State of Wisconsin Investment Board | 50,600 | $1.82M | 0.00% | 00.0% | Unchanged |
| Jackson Creek Investment Advisors LLC | 49,814 | $1.79M | 0.65% | +49,814 | New |
| Renaissance Group LLC | 48,833 | $1.75M | 0.08% | −14,726−23.2% | Reduced |
| Qube Research & Technologies Ltd | 48,824 | $1.75M | 0.02% | +48,824 | New |
| California State Teachers Retirement System | 48,368 | $1.74M | 0.00% | −4,056−7.7% | Reduced |
| Cornercap Investment Counsel Inc | 46,995 | $1.69M | 0.19% | −11,980−20.3% | Reduced |
| Alliancebernstein L.P. | 46,206 | $1.66M | 0.00% | +153+0.3% | Added |
| Summit Global Investments | 44,700 | $1.60M | 0.12% | −1,200−2.6% | Reduced |
| UBS Asset Management Americas Inc | 43,234 | $1.55M | 0.00% | +9,218+27.1% | Added |
| Credit Suisse AG | 41,535 | $1.49M | 0.00% | +5,465+15.2% | Added |
| Tudor Investment Corp Et Al | 40,395 | $1.45M | 0.04% | −3,317−7.6% | Reduced |
| SEI Investments Co | 40,107 | $1.45M | 0.00% | +40,107 | New |
| Citigroup Inc | 38,664 | $1.39M | 0.00% | +8,224+27.0% | Added |
| Trexquant Investment LP | 36,405 | $1.31M | 0.06% | +23,363+179.1% | Added |
| PDT Partners, LLC | 34,389 | $1.24M | 0.11% | +930+2.8% | Added |
| Shaker Investments LLC | 33,794 | $1.21M | 0.62% | +33,794 | New |
| Robeco Institutional Asset Management B.V. | 33,561 | $1.21M | 0.00% | +33,561 | New |
| Ziegler Capital Management, LLC | 33,179 | $1.19M | 0.05% | −2,700−7.5% | Reduced |
| Great West Life Assurance Co | 32,276 | $1.19M | 0.00% | −215−0.7% | Reduced |
| Comerica Bank | 30,182 | $1.18M | 0.01% | −4,335−12.6% | Reduced |
| Shell Asset Management Co | 32,403 | $1.16M | 0.03% | −4,796−12.9% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 31,763 | $1.14M | 0.01% | +3,916+14.1% | Added |
| Yousif Capital Management, LLC | 31,169 | $1.12M | 0.01% | −4,460−12.5% | Reduced |
| Guggenheim Capital LLC | 31,155 | $1.12M | 0.01% | −3,036−8.9% | Reduced |
| Quantedge Capital Pte Ltd | 31,100 | $1.12M | 0.33% | +31,100 | New |
| Advisor Group Holdings, Inc. | 29,894 | $1.10M | 0.00% | +27,583+1,193.6% | Added |
| Graham Capital Management, L.P. | 30,668 | $1.10M | 0.05% | +30,668 | New |
| Squarepoint Ops LLC | 30,634 | $1.10M | 0.01% | +30,634 | New |
| Thrivent Financial for Lutherans | 29,994 | $1.08M | 0.00% | +100.0% | Added |
| FMR LLC | 29,625 | $1.06M | 0.00% | +29,625 | New |
| UBS Group AG | 27,889 | $1.00M | 0.00% | +14,471+107.8% | Added |
| APG Asset Management N.V. | 30,000 | $968.0K | 0.00% | +30,000 | New |
| Royal Bank of Canada | 26,585 | $954.0K | 0.00% | +19,142+257.2% | Added |
| New York State Common Retirement Fund | 26,400 | $948.0K | 0.00% | −304−1.1% | Reduced |
| Texas Permanent School Fund | 26,120 | $938.0K | 0.01% | −442−1.7% | Reduced |
| Macquarie Group Ltd | 25,707 | $923.0K | 0.00% | +19,559+318.1% | Added |
| State of Alaska, Department of Revenue | 25,628 | $920.0K | 0.01% | −425−1.6% | Reduced |
| Occudo Quantitative Strategies LP | 24,813 | $891.0K | 0.07% | +3,922+18.8% | Added |