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, Q2 2026
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Jun 30, 2026. 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
- 212
- 0 vs. Q1 2026
- Shares held
- 28.3M
- −4.01M (−12.4%) vs. Q1 2026
- Total value
- $572.1M
- −$61.7M (−9.7%) vs. Q1 2026
- New holders
- 32
- 63 more added
- Sold out
- 32
- 77 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Hohimer Wealth Management, LLC | 13,128 | $264.9K | 0.03% | +62+0.5% | Added |
| Jain Global LLC | 14,183 | $286.2K | 0.00% | +14,183 | New |
| Manufacturers Life Insurance Company, The | 14,247 | $287.5K | 0.00% | −1,632−10.3% | Reduced |
| Fox Run Management, L.L.C. | 14,556 | $293.7K | 0.05% | +14,556 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 14,873 | $300.1K | 0.00% | −1,973−11.7% | Reduced |
| Louisiana State Employees Retirement System | 14,900 | $300.7K | 0.00% | −800−5.1% | Reduced |
| Assenagon Asset Management S.A. | 15,216 | $307.1K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 16,231 | $327.5K | 0.00% | −49,309−75.2% | Reduced |
| Jupiter Topco LLC | 16,868 | $340.4K | 0.00% | +16,868 | New |
| State of Wisconsin Investment Board | 17,039 | $343.8K | 0.00% | −349−2.0% | Reduced |
| Man Group plc | 17,342 | $350.0K | 0.00% | −19,932−53.5% | Reduced |
| Illinois Municipal Retirement Fund | 17,452 | $352.2K | 0.00% | −2,076−10.6% | Reduced |
| Russell Investments Group, Ltd. | 18,108 | $365.4K | 0.00% | +14,663+425.6% | Added |
| Raymond James Financial Inc | 19,313 | $389.7K | 0.00% | +258+1.4% | Added |
| MetLife Investment Management | 20,761 | $419.0K | 0.00% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 20,827 | $420.3K | 0.00% | +20,827 | New |
| New York State Teachers Retirement System | 21,180 | $427.0K | 0.00% | −645−3.0% | Reduced |
| Thrivent Financial for Lutherans | 22,295 | $450.0K | 0.00% | −1,323−5.6% | Reduced |
| Vanguard Asset Management, Ltd | 23,052 | $465.2K | 0.00% | 00.0% | Unchanged |
| Campbell & CO Investment Adviser LLC | 23,211 | $468.4K | 0.02% | +23,211 | New |
| Quadrature Capital Ltd | 24,428 | $493.0K | 0.00% | −6,133−20.1% | Reduced |
| Franklin Resources Inc | 24,986 | $504.2K | 0.00% | −114,319−82.1% | Reduced |
| Barclays PLC | 25,217 | $508.9K | 0.00% | +3,934+18.5% | Added |
| Advisory Research Inc | 25,337 | $511.3K | 0.05% | +20.0% | Added |
| Advisor OS, LLC | 25,405 | $512.7K | 0.03% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 26,433 | $531.0K | 0.01% | −977−3.6% | Reduced |
| Great West Life Assurance Co | 26,787 | $541.0K | 0.00% | −3,429−11.3% | Reduced |
| FMR LLC | 28,958 | $584.4K | 0.00% | +27,664+2,137.9% | Added |
| Illumine Investment Management, LLC | 0 | $594.2K | 0.39% | −28,078−100.0% | Reduced |
| Engineers Gate Manager LP | 30,191 | $609.3K | 0.01% | +30,191 | New |
| SG Americas Securities, LLC | 31,709 | $640.0K | 0.00% | −1,097−3.3% | Reduced |
| Millennium Management LLC | 31,814 | $642.0K | 0.00% | −339,559−91.4% | Reduced |
| SummerHaven Investment Management, LLC | 32,633 | $658.5K | 0.35% | 00.0% | Unchanged |
| Segall Bryant & Hamill, LLC | 33,318 | $672.4K | 0.01% | 00.0% | Unchanged |
| Janney Montgomery Scott LLC | 33,841 | $683.0K | 0.00% | +20,024+144.9% | Added |
| Legato Capital Management LLC | 34,135 | $688.8K | 0.06% | 00.0% | Unchanged |
| Brevan Howard Capital Management LP | 34,201 | $690.2K | 0.01% | +22,587+194.5% | Added |
| Vident Advisory, LLC | 34,221 | $690.6K | 0.01% | +10,977+47.2% | Added |
| Y-Intercept (Hong Kong) Ltd | 34,704 | $700.3K | 0.01% | +34,704 | New |
| Prudential Financial Inc | 35,133 | $709.0K | 0.00% | −15,560−30.7% | Reduced |
| Deutsche Bank AG | 35,307 | $712.5K | 0.00% | +2,176+6.6% | Added |
| California State Teachers Retirement System | 36,151 | $729.5K | 0.00% | +7,852+27.7% | Added |
| Polaris Capital Management, LLC | 43,232 | $872.4K | 0.08% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 44,062 | $889.2K | 0.00% | −11,313−20.4% | Reduced |
| XTX Topco Ltd | 46,808 | $944.6K | 0.01% | −40,928−46.6% | Reduced |
| Steel Peak Wealth Management LLC | 48,684 | $982.4K | 0.03% | +222+0.5% | Added |
| Intech Investment Management LLC | 49,839 | $1.01M | 0.01% | +25,632+105.9% | Added |
| Susquehanna International Group, LLP | 50,565 | $1.02M | 0.00% | +35,964+246.3% | Added |
| Voloridge Investment Management, LLC | 50,912 | $1.03M | 0.00% | −120,276−70.3% | Reduced |
| Price T Rowe Associates Inc | 51,103 | $1.03M | 0.00% | +6,200+13.8% | Added |
| Creative Planning | 51,444 | $1.04M | 0.00% | +35,041+213.6% | Added |
| BNP Paribas Arbitrage, SA | 54,663 | $1.10M | 0.00% | −101,414−65.0% | Reduced |
| Alliancebernstein L.P. | 56,430 | $1.11M | 0.00% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 54,964 | $1.11M | 0.00% | +54,964 | New |
| Citigroup Inc | 55,779 | $1.13M | 0.00% | +19,875+55.4% | Added |
| Wells Fargo & Company | 55,913 | $1.13M | 0.00% | +13,894+33.1% | Added |
| Jump Financial, LLC | 56,781 | $1.15M | 0.01% | +56,781 | New |
| JPMorgan Chase & Co | 57,563 | $1.19M | 0.00% | −47,011−45.0% | Reduced |
| Swiss National Bank | 64,800 | $1.31M | 0.00% | −7,800−10.7% | Reduced |
| Robeco Institutional Asset Management B.V. | 66,407 | $1.34M | 0.00% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 68,244 | $1.38M | 0.00% | −10,531−13.4% | Reduced |
| Assetmark, Inc | 68,590 | $1.38M | 0.00% | +14,852+27.6% | Added |
| Legal & General Group Plc | 78,281 | $1.58M | 0.00% | −2,635−3.3% | Reduced |
| Squarepoint Ops LLC | 78,795 | $1.59M | 0.00% | +50,450+178.0% | Added |
| Rhumbline Advisers | 80,454 | $1.62M | 0.00% | −3,267−3.9% | Reduced |
| Exchange Traded Concepts, LLC | 87,054 | $1.76M | 0.01% | +4,638+5.6% | Added |
| Vanguard Global Advisers, LLC | 87,639 | $1.77M | 0.00% | +37,476+74.7% | Added |
| Nuveen, LLC | 88,397 | $1.78M | 0.00% | +11,802+15.4% | Added |
| Public Sector Pension Investment Board | 116,648 | $2.35M | 0.01% | −9,926−7.8% | Reduced |
| Arrowstreet Capital, Limited Partnership | 116,653 | $2.35M | 0.00% | −208,638−64.1% | Reduced |
| Bessemer Group Inc | 121,345 | $2.45M | 0.00% | −701−0.6% | Reduced |
| Nordea Investment Management AB | 126,931 | $2.56M | 0.00% | +3,107+2.5% | Added |
| Lam Group, Inc. | 130,800 | $2.64M | 1.31% | 00.0% | Unchanged |
| Algert Global LLC | 131,400 | $2.65M | 0.03% | +69,040+110.7% | Added |
| Bank of America Corp | 136,824 | $2.76M | 0.00% | −37,499−21.5% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 139,402 | $2.81M | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 149,612 | $3.02M | 0.00% | −100,005−40.1% | Reduced |
| Invesco Ltd. | 158,064 | $3.19M | 0.00% | −446,710−73.9% | Reduced |
| O'Shaughnessy Asset Management, LLC | 159,427 | $3.22M | 0.01% | +55,498+53.4% | Added |
| Empowered Funds, LLC | 162,812 | $3.29M | 0.02% | −18,520−10.2% | Reduced |
| Jane Street Group, LLC | 178,734 | $3.61M | 0.00% | +86,259+93.3% | Added |
| New York State Common Retirement Fund | 181,122 | $3.66M | 0.00% | +32,400+21.8% | Added |
| Principal Financial Group Inc | 204,250 | $4.12M | 0.00% | −4,881−2.3% | Reduced |
| AQR Capital Management LLC | 208,651 | $4.21M | 0.00% | +129,873+164.9% | Added |
| Vanguard Fiduciary Trust Co | 224,478 | $4.53M | 0.00% | −6,566−2.8% | Reduced |
| Bank of New York Mellon Corp | 232,343 | $4.69M | 0.00% | −10,883−4.5% | Reduced |
| Pacer Advisors, Inc. | 241,181 | $4.87M | 0.01% | −20,302−7.8% | Reduced |
| First Trust Advisors LP | 246,951 | $4.98M | 0.00% | +96,360+64.0% | Added |
| Two Sigma Investments, LP | 248,115 | $5.01M | 0.00% | +109,967+79.6% | Added |
| Royce & Associates LP | 294,758 | $5.95M | 0.05% | −111,417−27.4% | Reduced |
| Bridgeway Capital Management, LLC | 298,954 | $6.03M | 0.11% | −31,503−9.5% | Reduced |
| Charles Schwab Investment Management Inc | 310,178 | $6.26M | 0.00% | −10,861−3.4% | Reduced |
| Bridge City Capital, LLC | 338,708 | $6.84M | 1.56% | +3,603+1.1% | Added |
| Northern Trust Corp | 370,991 | $7.49M | 0.00% | −1,288−0.3% | Reduced |
| Denali Advisors LLC | 375,965 | $7.59M | 0.76% | +109,500+41.1% | Added |
| HRT Financial LP | 387,530 | $7.82M | 0.01% | +331,349+589.8% | Added |
| UBS Group AG | 393,110 | $7.93M | 0.00% | −27,153−6.5% | Reduced |
| Morgan Stanley | 434,840 | $8.78M | 0.00% | +14,503+3.5% | Added |
| Systematic Financial Management LP | 437,384 | $8.83M | 0.18% | −15,514−3.4% | Reduced |
| Goldman Sachs Group Inc | 505,360 | $10.2M | 0.00% | +175,972+53.4% | Added |