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 |
|---|---|---|---|---|---|
| Navellier & Associates Inc | 22,738 | $816.0K | 0.14% | +22,738 | New |
| Allianz Asset Management GmbH | 23,229 | $834.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 23,700 | $851.0K | 0.00% | +6,200+35.4% | Added |
| Occudo Quantitative Strategies LP | 24,813 | $891.0K | 0.07% | +3,922+18.8% | Added |
| State of Alaska, Department of Revenue | 25,628 | $920.0K | 0.01% | −425−1.6% | Reduced |
| Macquarie Group Ltd | 25,707 | $923.0K | 0.00% | +19,559+318.1% | Added |
| Texas Permanent School Fund | 26,120 | $938.0K | 0.01% | −442−1.7% | Reduced |
| New York State Common Retirement Fund | 26,400 | $948.0K | 0.00% | −304−1.1% | Reduced |
| Royal Bank of Canada | 26,585 | $954.0K | 0.00% | +19,142+257.2% | Added |
| APG Asset Management N.V. | 30,000 | $968.0K | 0.00% | +30,000 | New |
| UBS Group AG | 27,889 | $1.00M | 0.00% | +14,471+107.8% | Added |
| FMR LLC | 29,625 | $1.06M | 0.00% | +29,625 | New |
| Thrivent Financial for Lutherans | 29,994 | $1.08M | 0.00% | +100.0% | 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 |
| Advisor Group Holdings, Inc. | 29,894 | $1.10M | 0.00% | +27,583+1,193.6% | Added |
| Quantedge Capital Pte Ltd | 31,100 | $1.12M | 0.33% | +31,100 | New |
| Guggenheim Capital LLC | 31,155 | $1.12M | 0.01% | −3,036−8.9% | Reduced |
| Yousif Capital Management, LLC | 31,169 | $1.12M | 0.01% | −4,460−12.5% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 31,763 | $1.14M | 0.01% | +3,916+14.1% | Added |
| Shell Asset Management Co | 32,403 | $1.16M | 0.03% | −4,796−12.9% | Reduced |
| Comerica Bank | 30,182 | $1.18M | 0.01% | −4,335−12.6% | Reduced |
| Great West Life Assurance Co | 32,276 | $1.19M | 0.00% | −215−0.7% | Reduced |
| Ziegler Capital Management, LLC | 33,179 | $1.19M | 0.05% | −2,700−7.5% | Reduced |
| Robeco Institutional Asset Management B.V. | 33,561 | $1.21M | 0.00% | +33,561 | New |
| Shaker Investments LLC | 33,794 | $1.21M | 0.62% | +33,794 | New |
| PDT Partners, LLC | 34,389 | $1.24M | 0.11% | +930+2.8% | Added |
| Trexquant Investment LP | 36,405 | $1.31M | 0.06% | +23,363+179.1% | Added |
| Citigroup Inc | 38,664 | $1.39M | 0.00% | +8,224+27.0% | Added |
| SEI Investments Co | 40,107 | $1.45M | 0.00% | +40,107 | New |
| Tudor Investment Corp Et Al | 40,395 | $1.45M | 0.04% | −3,317−7.6% | Reduced |
| Credit Suisse AG | 41,535 | $1.49M | 0.00% | +5,465+15.2% | Added |
| UBS Asset Management Americas Inc | 43,234 | $1.55M | 0.00% | +9,218+27.1% | Added |
| Summit Global Investments | 44,700 | $1.60M | 0.12% | −1,200−2.6% | Reduced |
| Alliancebernstein L.P. | 46,206 | $1.66M | 0.00% | +153+0.3% | Added |
| Cornercap Investment Counsel Inc | 46,995 | $1.69M | 0.19% | −11,980−20.3% | Reduced |
| California State Teachers Retirement System | 48,368 | $1.74M | 0.00% | −4,056−7.7% | Reduced |
| 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 |
| Jackson Creek Investment Advisors LLC | 49,814 | $1.79M | 0.65% | +49,814 | New |
| State of Wisconsin Investment Board | 50,600 | $1.82M | 0.00% | 00.0% | Unchanged |
| D.A. Davidson & Co. | 51,134 | $1.84M | 0.02% | +51,134 | New |
| Jump Financial, LLC | 51,304 | $1.84M | 0.08% | +22,504+78.1% | Added |
| Barclays PLC | 52,345 | $1.88M | 0.00% | −21,085−28.7% | Reduced |
| Exchange Traded Concepts, LLC | 52,681 | $1.89M | 0.04% | +27,698+110.9% | Added |
| Susquehanna International Group, LLP | 55,582 | $2.00M | 0.00% | +55,582 | New |
| LPL Financial LLC | 59,466 | $2.13M | 0.00% | +59,466 | New |
| Bank of America Corp | 61,229 | $2.20M | 0.00% | +4,904+8.7% | Added |
| Victory Capital Management Inc | 62,699 | $2.22M | 0.00% | −8,904−12.4% | Reduced |
| D. E. Shaw & Co., Inc. | 65,139 | $2.34M | 0.00% | +38,370+143.3% | Added |
| Public Sector Pension Investment Board | 68,772 | $2.47M | 0.02% | −6,180−8.2% | Reduced |
| Globeflex Capital L P | 72,300 | $2.60M | 0.53% | −46−0.1% | Reduced |
| American Century Companies Inc | 78,230 | $2.81M | 0.00% | −15,282−16.3% | Reduced |
| Rhumbline Advisers | 79,995 | $2.87M | 0.00% | +2,019+2.6% | Added |
| Wells Fargo & Company | 80,685 | $2.90M | 0.00% | +8,348+11.5% | Added |
| Prudential Financial Inc | 80,885 | $2.90M | 0.00% | −24,020−22.9% | Reduced |
| Allspring Global Investments Holdings, LLC | 82,053 | $2.94M | 0.00% | −169,908−67.4% | Reduced |
| Martingale Asset Management L P | 83,136 | $2.99M | 0.04% | −18,866−18.5% | Reduced |
| Legal & General Group Plc | 87,191 | $3.13M | 0.00% | −684−0.8% | Reduced |
| JPMorgan Chase & Co | 88,468 | $3.18M | 0.00% | −22,047−19.9% | Reduced |
| Swiss National Bank | 90,500 | $3.25M | 0.00% | +6,700+8.0% | Added |
| EAM Global Investors LLC | 91,702 | $3.29M | 0.61% | +91,702 | New |
| Voloridge Investment Management, LLC | 94,070 | $3.38M | 0.02% | +94,070 | New |
| Calamos Advisors LLC | 94,643 | $3.40M | 0.01% | +94,643 | New |
| Clark Capital Management Group, Inc. | 95,629 | $3.43M | 0.04% | +15,535+19.4% | Added |
| Acadian Asset Management LLC | 110,148 | $3.95M | 0.02% | +87,113+378.2% | Added |
| Jacobs Levy Equity Management, Inc | 112,516 | $4.04M | 0.03% | −74,813−39.9% | Reduced |
| Goldman Sachs Group Inc | 116,488 | $4.18M | 0.00% | −472,335−80.2% | Reduced |
| EAM Investors, LLC | 124,697 | $4.48M | 0.83% | +124,697 | New |
| BNP Paribas Arbitrage, SA | 139,026 | $4.99M | 0.01% | −15,159−9.8% | Reduced |
| LSV Asset Management | 139,753 | $5.02M | 0.01% | +54,907+64.7% | Added |
| Cubist Systematic Strategies, LLC | 140,229 | $5.03M | 0.04% | +101,720+264.1% | Added |
| Russell Investments Group, Ltd. | 154,339 | $5.54M | 0.01% | +26,118+20.4% | Added |
| Friess Associates LLC | 154,415 | $5.54M | 2.96% | +154,415 | New |
| Millennium Management LLC | 173,321 | $6.22M | 0.01% | +100,140+136.8% | Added |
| Eagle Asset Management Inc | 177,339 | $6.37M | 0.03% | −74,277−29.5% | Reduced |
| Penserra Capital Management LLC | 178,801 | $6.42M | 0.15% | +178,801 | New |
| Ameriprise Financial Inc | 187,784 | $6.74M | 0.00% | −1,725−0.9% | Reduced |
| Hillsdale Investment Management Inc. | 234,338 | $8.41M | 0.54% | +234,338 | New |
| Citadel Advisors LLC | 237,883 | $8.54M | 0.01% | +24,361+11.4% | Added |
| Silvercrest Asset Management Group LLC | 241,701 | $8.68M | 0.06% | −127,250−34.5% | Reduced |
| Frontier Capital Management Co LLC | 251,272 | $9.02M | 0.08% | −936−0.4% | Reduced |
| MESIROW FINANCIAL INVESTMENT MANAGEMENT - Equity & Fixed Income | 251,659 | $9.04M | 1.00% | +251,659 | New |
| Principal Financial Group Inc | 266,904 | $9.58M | 0.01% | −14,036−5.0% | Reduced |
| Charles Schwab Investment Management Inc | 268,398 | $9.64M | 0.00% | +7,463+2.9% | Added |
| Nordea Investment Management AB | 284,391 | $10.4M | 0.01% | +10,931+4.0% | Added |
| Renaissance Technologies LLC | 308,700 | $11.1M | 0.01% | +18,900+6.5% | Added |
| Parametric Portfolio Associates LLC | 339,347 | $12.2M | 0.01% | +174,951+106.4% | Added |
| Janus Henderson Group PLC | 363,504 | $13.0M | 0.01% | −609,689−62.6% | Reduced |
| Arrowstreet Capital, Limited Partnership | 391,585 | $14.1M | 0.02% | −24,464−5.9% | Reduced |
| Bank of New York Mellon Corp | 401,405 | $14.4M | 0.00% | +30,462+8.2% | Added |
| Northern Trust Corp | 404,142 | $14.5M | 0.00% | −17,809−4.2% | Reduced |
| Assenagon Asset Management S.A. | 427,605 | $15.4M | 0.05% | −100,073−19.0% | Reduced |
| Nuveen Asset Management, LLC | 476,675 | $16.9M | 0.01% | +93,448+24.4% | Added |
| Morgan Stanley | 562,395 | $20.2M | 0.00% | −56,347−9.1% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 614,855 | $22.1M | 0.13% | +3,393+0.6% | Added |
| Geode Capital Management, LLC | 703,479 | $25.3M | 0.00% | −11,394−1.6% | Reduced |
| Invesco Ltd. | 733,842 | $26.3M | 0.01% | +36,953+5.3% | Added |
| State Street Corp | 1,321,951 | $47.5M | 0.00% | −117,256−8.1% | Reduced |
| Dimensional Fund Advisors LP | 1,796,269 | $64.5M | 0.02% | +25,418+1.4% | Added |