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, Q4 2023
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Dec 31, 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
- 276
- +23 vs. Q3 2023
- Shares held
- 33.3M
- +1.32M (+4.1%) vs. Q3 2023
- Total value
- $2.06B
- +$588.4M (+40.0%) vs. Q3 2023
- New holders
- 48
- 97 more added
- Sold out
- 25
- 93 more reduced
3 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Two Sigma Investments, LP | 41,775 | $2.58M | 0.01% | −53,709−56.2% | Reduced |
| State of Wisconsin Investment Board | 42,774 | $2.65M | 0.01% | −229−0.5% | Reduced |
| Prudential Financial Inc | 43,009 | $2.66M | 0.00% | −1,596−3.6% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 45,000 | $2.78M | 0.01% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 45,292 | $2.80M | 0.00% | −1,425−3.1% | Reduced |
| State of New Jersey Common Pension Fund D | 45,960 | $2.84M | 0.01% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 46,187 | $2.86M | 0.04% | −36,720−44.3% | Reduced |
| First Trust Advisors LP | 46,917 | $2.90M | 0.00% | −32,146−40.7% | Reduced |
| Renaissance Group LLC | 48,419 | $3.01M | 0.12% | +2,923+6.4% | Added |
| Penserra Capital Management LLC | 48,749 | $3.02M | 0.06% | +48,749 | New |
| Shaker Investments LLC | 49,078 | $3.04M | 1.41% | +28,283+136.0% | Added |
| Credit Suisse AG | 51,312 | $3.17M | 0.00% | −175−0.3% | Reduced |
| Jane Street Group, LLC | 51,979 | $3.21M | 0.00% | +11,868+29.6% | Added |
| New York State Common Retirement Fund | 53,688 | $3.32M | 0.00% | +5,361+11.1% | Added |
| Qube Research & Technologies Ltd | 55,404 | $3.43M | 0.01% | −46,920−45.9% | Reduced |
| Royal Bank of Canada | 56,301 | $3.48M | 0.00% | +50,512+872.6% | Added |
| Clark Capital Management Group, Inc. | 62,242 | $3.85M | 0.03% | +4,237+7.3% | Added |
| Moody Aldrich Partners LLC | 63,114 | $3.90M | 0.70% | +63,114 | New |
| Barclays PLC | 63,242 | $3.91M | 0.00% | +39,449+165.8% | Added |
| Russell Investments Group, Ltd. | 63,667 | $3.94M | 0.01% | −66,854−51.2% | Reduced |
| UBS Group AG | 71,086 | $4.40M | 0.00% | +52,714+286.9% | Added |
| JPMorgan Chase & Co | 74,225 | $4.59M | 0.00% | −6,324−7.9% | Reduced |
| Alliancebernstein L.P. | 76,890 | $4.76M | 0.00% | −55,060−41.7% | Reduced |
| D. E. Shaw & Co., Inc. | 77,080 | $4.77M | 0.01% | −23,093−23.1% | Reduced |
| Swiss National Bank | 77,100 | $4.77M | 0.00% | −7,800−9.2% | Reduced |
| Public Sector Pension Investment Board | 77,543 | $4.80M | 0.04% | +30,443+64.6% | Added |
| Silvercrest Asset Management Group LLC | 83,246 | $5.15M | 0.04% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 83,444 | $5.16M | 0.02% | −18,058−17.8% | Reduced |
| Mutual of America Capital Management LLC | 87,757 | $5.43M | 0.06% | −3,813−4.2% | Reduced |
| Raymond James & Associates | 92,659 | $5.73M | 0.00% | +39,916+75.7% | Added |
| Rhumbline Advisers | 93,740 | $5.80M | 0.01% | +228+0.2% | Added |
| Hillsdale Investment Management Inc. | 96,353 | $5.96M | 0.49% | −195−0.2% | Reduced |
| BNP Paribas Arbitrage, SA | 97,806 | $6.05M | 0.01% | −24,674−20.1% | Reduced |
| Voya Investment Management LLC | 101,953 | $6.31M | 0.01% | +81,826+406.5% | Added |
| Beacon Harbor Wealth Advisors, Inc. | 103,140 | $6.38M | 1.85% | +450.0% | Added |
| Legal & General Group Plc | 107,086 | $6.62M | 0.00% | +136+0.1% | Added |
| Goldman Sachs Group Inc | 110,984 | $6.86M | 0.00% | −183,477−62.3% | Reduced |
| Citadel Advisors LLC | 116,199 | $7.19M | 0.01% | −12,516−9.7% | Reduced |
| Two Sigma Advisers, LP | 127,400 | $7.88M | 0.02% | +42,000+49.2% | Added |
| Frontier Capital Management Co LLC | 127,537 | $7.89M | 0.08% | +211+0.2% | Added |
| Lam Group, Inc. | 130,800 | $8.09M | 7.36% | +2,800+2.2% | Added |
| Ameriprise Financial Inc | 139,255 | $8.61M | 0.00% | −10,414−7.0% | Reduced |
| Portolan Capital Management, LLC | 148,416 | $9.18M | 0.80% | +15,566+11.7% | Added |
| Janus Henderson Group PLC | 165,198 | $10.2M | 0.01% | +52,618+46.7% | Added |
| Nuveen Asset Management, LLC | 189,847 | $11.7M | 0.00% | −164,112−46.4% | Reduced |
| Principal Financial Group Inc | 202,953 | $12.6M | 0.01% | −7,083−3.4% | Reduced |
| Millennium Management LLC | 205,017 | $12.7M | 0.01% | −91,290−30.8% | Reduced |
| Jacobs Levy Equity Management, Inc | 208,515 | $12.9M | 0.06% | −346,335−62.4% | Reduced |
| Bank of America Corp | 215,532 | $13.3M | 0.00% | +80,700+59.9% | Added |
| Voloridge Investment Management, LLC | 228,669 | $14.1M | 0.06% | −142,641−38.4% | Reduced |
| Victory Capital Management Inc | 237,474 | $14.7M | 0.02% | +213,014+870.9% | Added |
| Mesirow Institutional Investment Management, Inc. | 252,831 | $15.6M | 1.46% | +69,026+37.6% | Added |
| Bank of New York Mellon Corp | 313,338 | $19.4M | 0.00% | −13,169−4.0% | Reduced |
| LSV Asset Management | 317,600 | $19.6M | 0.04% | +105,232+49.6% | Added |
| Bessemer Group Inc | 325,973 | $20.2M | 0.04% | +177,829+120.0% | Added |
| Nordea Investment Management AB | 331,805 | $20.3M | 0.03% | −6,638−2.0% | Reduced |
| American Century Companies Inc | 337,690 | $20.9M | 0.01% | +137,413+68.6% | Added |
| Oberweis Asset Management Inc | 340,265 | $21.0M | 1.96% | +187,765+123.1% | Added |
| Granite Investment Partners, LLC | 365,340 | $22.6M | 0.88% | +34,429+10.4% | Added |
| Charles Schwab Investment Management Inc | 379,480 | $23.5M | 0.01% | +27,102+7.7% | Added |
| Boone Capital Management LLC | 400,000 | $24.7M | 5.77% | +400,000 | New |
| Invesco Ltd. | 400,889 | $24.8M | 0.01% | −9,740−2.4% | Reduced |
| Morgan Stanley | 571,113 | $35.3M | 0.00% | +12,904+2.3% | Added |
| Northern Trust Corp | 575,417 | $35.6M | 0.01% | +15,994+2.9% | Added |
| Price T Rowe Associates Inc | 586,957 | $36.3M | 0.00% | +17,245+3.0% | Added |
| Epoch Investment Partners, Inc. | 592,530 | $36.6M | 0.17% | +460,473+348.7% | Added |
| Renaissance Technologies LLC | 641,900 | $39.7M | 0.06% | +38,800+6.4% | Added |
| TD Asset Management Inc | 793,559 | $49.1M | 0.05% | +649,001+449.0% | Added |
| Geode Capital Management, LLC | 846,652 | $52.4M | 0.01% | +37,026+4.6% | Added |
| Fuller & Thaler Asset Management, Inc. | 1,273,017 | $78.7M | 0.40% | −2,197−0.2% | Reduced |
| Dimensional Fund Advisors LP | 1,339,142 | $82.8M | 0.02% | −548,596−29.1% | Reduced |
| State Street Corp | 1,471,137 | $91.0M | 0.00% | +11,646+0.8% | Added |
| Neuberger Berman Group LLC | 1,693,002 | $104.7M | 0.09% | +205,023+13.8% | Added |
| Vanguard Group Inc | 2,815,596 | $174.1M | 0.00% | +48,203+1.7% | Added |
| Federated Hermes, Inc. | 3,272,761 | $202.4M | 0.50% | −169,473−4.9% | Reduced |
| BlackRock Inc. | 6,037,158 | $373.4M | 0.01% | −53,101−0.9% | Reduced |
| Walleye Capital LLC | 0 | $0 | 0.00% | −39,854−100.0% | Sold out |
| Monashee Investment Management LLC | 0 | $0 | 0.00% | −39,461−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −37,276−100.0% | Sold out |
| Quantedge Capital Pte Ltd | 0 | $0 | 0.00% | −36,389−100.0% | Sold out |
| Summit Global Investments | 0 | $0 | 0.00% | −36,238−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −28,230−100.0% | Sold out |
| Empowered Funds, LLC | 0 | $0 | 0.00% | −18,445−100.0% | Sold out |
| Point72 Middle East FZE | 0 | $0 | 0.00% | −17,161−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −16,543−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −13,992−100.0% | Sold out |
| FORA Capital, LLC | 0 | $0 | 0.00% | −11,219−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −10,057−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −8,597−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −7,163−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −5,746−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −5,700−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −4,100−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −1,283−100.0% | Sold out |
| Altshuler Shaham Ltd | 0 | $0 | 0.00% | −441−100.0% | Sold out |
| City State Bank | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Householder Group Estate & Retirement Specialist, LLC | 0 | $0 | 0.00% | −91−100.0% | Sold out |
| Fisher Asset Management, LLC | 0 | $0 | 0.00% | −58−100.0% | Sold out |
| USA Financial Portformulas Corp | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Abound Wealth Management | 0 | $0 | 0.00% | −6−100.0% | Sold out |