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 2022
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Dec 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
- 213
- +10 vs. Q3 2022
- Shares held
- 29.1M
- −680.0K (−2.3%) vs. Q3 2022
- Total value
- $816.7M
- −$21.9M (−2.6%) vs. Q3 2022
- New holders
- 26
- 71 more added
- Sold out
- 16
- 83 more reduced
4 institutions that held it in Q3 2022 haven't filed for Q4 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2022: 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 2022
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 7,038,769 | $197.2M | 0.01% | −109,044−1.5% | Reduced |
| Federated Hermes, Inc. | 3,284,217 | $92.0M | 0.25% | +19,038+0.6% | Added |
| Vanguard Group Inc | 2,621,807 | $73.5M | 0.00% | +15,645+0.6% | Added |
| Dimensional Fund Advisors LP | 1,866,544 | $52.3M | 0.02% | +27,410+1.5% | Added |
| State Street Corp | 1,358,510 | $38.1M | 0.00% | −175,283−11.4% | Reduced |
| Price T Rowe Associates Inc | 789,170 | $22.1M | 0.00% | −19,561−2.4% | Reduced |
| Geode Capital Management, LLC | 722,281 | $20.2M | 0.00% | +14,075+2.0% | Added |
| Invesco Ltd. | 645,959 | $18.1M | 0.01% | +58,016+9.9% | Added |
| Morgan Stanley | 603,048 | $16.9M | 0.00% | −107,336−15.1% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 500,065 | $14.0M | 0.09% | −215,116−30.1% | Reduced |
| Renaissance Technologies LLC | 447,400 | $12.5M | 0.02% | +13,600+3.1% | Added |
| Northern Trust Corp | 437,947 | $12.3M | 0.00% | +22,830+5.5% | Added |
| Nuveen Asset Management, LLC | 384,005 | $10.8M | 0.00% | −32,602−7.8% | Reduced |
| Mesirow Institutional Investment Management, Inc. | 374,414 | $10.5M | 1.38% | −2,685−0.7% | Reduced |
| Bank of New York Mellon Corp | 346,016 | $9.70M | 0.00% | −16,859−4.6% | Reduced |
| Nordea Investment Management AB | 337,427 | $9.49M | 0.01% | −7,951−2.3% | Reduced |
| Charles Schwab Investment Management Inc | 326,788 | $9.16M | 0.00% | +19,495+6.3% | Added |
| Eagle Asset Management Inc | 300,873 | $8.48M | 0.05% | −9,382−3.0% | Reduced |
| Portolan Capital Management, LLC | 270,791 | $7.59M | 0.75% | −11,396−4.0% | Reduced |
| Goldman Sachs Group Inc | 267,267 | $7.49M | 0.00% | +92,924+53.3% | Added |
| Principal Financial Group Inc | 238,952 | $6.70M | 0.01% | −5,791−2.4% | Reduced |
| Pacer Advisors, Inc. | 231,009 | $6.47M | 0.03% | +231,009 | New |
| Silvercrest Asset Management Group LLC | 223,158 | $6.25M | 0.05% | −1,998−0.9% | Reduced |
| Frontier Capital Management Co LLC | 203,971 | $5.72M | 0.06% | −602−0.3% | Reduced |
| Jacobs Levy Equity Management, Inc | 190,672 | $5.34M | 0.04% | +2,633+1.4% | Added |
| Ameriprise Financial Inc | 174,820 | $4.90M | 0.00% | −18,074−9.4% | Reduced |
| Assenagon Asset Management S.A. | 173,479 | $4.86M | 0.02% | +28,263+19.5% | Added |
| Hillsdale Investment Management Inc. | 172,238 | $4.83M | 0.41% | −25,500−12.9% | Reduced |
| Arrowstreet Capital, Limited Partnership | 166,040 | $4.65M | 0.01% | −35,025−17.4% | Reduced |
| AXA S.A. | 149,406 | $4.19M | 0.02% | +3,141+2.1% | Added |
| Oberweis Asset Management Inc | 134,000 | $3.75M | 0.80% | +32,500+32.0% | Added |
| Lam Group, Inc. | 130,250 | $3.65M | 3.75% | +130,250 | New |
| Mutual of America Capital Management LLC | 116,027 | $3.25M | 0.04% | +32,777+39.4% | Added |
| JPMorgan Chase & Co | 113,753 | $3.19M | 0.00% | −105,930−48.2% | Reduced |
| AQR Capital Management LLC | 112,603 | $3.16M | 0.01% | +17,850+18.8% | Added |
| Allspring Global Investments Holdings, LLC | 110,365 | $3.09M | 0.01% | −116,159−51.3% | Reduced |
| Prudential Financial Inc | 106,733 | $2.99M | 0.01% | −34,399−24.4% | Reduced |
| Millennium Management LLC | 97,430 | $2.73M | 0.00% | +83,670+608.1% | Added |
| Voloridge Investment Management, LLC | 94,621 | $2.65M | 0.01% | −67,637−41.7% | Reduced |
| Swiss National Bank | 94,600 | $2.65M | 0.00% | +2,000+2.2% | Added |
| Legal & General Group Plc | 92,590 | $2.59M | 0.00% | +1,150+1.3% | Added |
| Rhumbline Advisers | 84,358 | $2.36M | 0.00% | −228−0.3% | Reduced |
| Shaker Investments LLC | 81,287 | $2.28M | 1.41% | +888+1.1% | Added |
| Alliancebernstein L.P. | 80,444 | $2.25M | 0.00% | +29,955+59.3% | Added |
| Two Sigma Advisers, LP | 80,400 | $2.25M | 0.01% | −10,200−11.3% | Reduced |
| Russell Investments Group, Ltd. | 73,102 | $2.05M | 0.00% | +1,708+2.4% | Added |
| Public Sector Pension Investment Board | 68,584 | $1.92M | 0.02% | −1,495−2.1% | Reduced |
| Globeflex Capital L P | 66,122 | $1.85M | 0.23% | −6,131−8.5% | Reduced |
| Bank of America Corp | 65,009 | $1.82M | 0.00% | −23,758−26.8% | Reduced |
| First Trust Advisors LP | 64,989 | $1.82M | 0.00% | +64,989 | New |
| Barclays PLC | 62,930 | $1.76M | 0.00% | +7,426+13.4% | Added |
| Qube Research & Technologies Ltd | 61,271 | $1.72M | 0.01% | −20,521−25.1% | Reduced |
| D. E. Shaw & Co., Inc. | 57,948 | $1.62M | 0.00% | +69+0.1% | Added |
| Allianz Asset Management GmbH | 57,745 | $1.62M | 0.00% | +36,821+176.0% | Added |
| Credit Suisse AG | 55,710 | $1.56M | 0.00% | +16,781+43.1% | Added |
| California State Teachers Retirement System | 49,409 | $1.38M | 0.00% | +385+0.8% | Added |
| D.A. Davidson & Co. | 48,911 | $1.37M | 0.02% | −179−0.4% | Reduced |
| Martingale Asset Management L P | 46,148 | $1.29M | 0.03% | −19,388−29.6% | Reduced |
| Renaissance Group LLC | 44,596 | $1.25M | 0.06% | +232+0.5% | Added |
| Schroder Investment Management Group | 44,326 | $1.24M | 0.00% | −14,850−25.1% | Reduced |
| UBS Asset Management Americas Inc | 44,087 | $1.24M | 0.00% | −2,336−5.0% | Reduced |
| Twinbeech Capital LP | 43,937 | $1.23M | 0.02% | +43,937 | New |
| Citadel Advisors LLC | 42,507 | $1.19M | 0.00% | −132,758−75.7% | Reduced |
| Cornercap Investment Counsel Inc | 41,046 | $1.15M | 0.20% | 00.0% | Unchanged |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 40,346 | $1.13M | 0.01% | +5,512+15.8% | Added |
| Teacher Retirement System of Texas | 39,494 | $1.11M | 0.01% | −9,662−19.7% | Reduced |
| State of Wisconsin Investment Board | 39,291 | $1.10M | 0.00% | +210+0.5% | Added |
| American Century Companies Inc | 38,800 | $1.09M | 0.00% | −17,180−30.7% | Reduced |
| Thrivent Financial for Lutherans | 38,669 | $1.08M | 0.00% | −852−2.2% | Reduced |
| Great West Life Assurance Co | 37,965 | $1.06M | 0.00% | −4,402−10.4% | Reduced |
| Exchange Traded Concepts, LLC | 37,152 | $1.04M | 0.03% | +1,135+3.2% | Added |
| Victory Capital Management Inc | 37,092 | $1.04M | 0.00% | +665+1.8% | Added |
| Trexquant Investment LP | 36,185 | $1.01M | 0.03% | +9,703+36.6% | Added |
| Quantedge Capital Pte Ltd | 35,153 | $985.0K | 0.33% | −71,047−66.9% | Reduced |
| Citigroup Inc | 31,747 | $889.6K | 0.00% | +757+2.4% | Added |
| Winton Group Ltd | 31,618 | $885.9K | 0.06% | +5,265+20.0% | Added |
| Summit Global Investments | 29,500 | $827.0K | 0.07% | +9,400+46.8% | Added |
| FMR LLC | 29,308 | $821.2K | 0.00% | +32+0.1% | Added |
| Truist Financial Corp | 28,568 | $800.5K | 0.00% | +20,640+260.3% | Added |
| New York State Common Retirement Fund | 28,533 | $799.5K | 0.00% | +1,787+6.7% | Added |
| New York State Teachers Retirement System | 28,387 | $795.0K | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 27,946 | $783.0K | 0.00% | +1,814+6.9% | Added |
| Ziegler Capital Management, LLC | 27,367 | $766.8K | 0.03% | −6,380−18.9% | Reduced |
| State of Tennessee, Treasury Department | 26,639 | $746.0K | 0.00% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 26,168 | $733.0K | 0.01% | −301−1.1% | Reduced |
| Virginia Retirement Systems Et Al | 25,600 | $717.3K | 0.01% | +8,900+53.3% | Added |
| Texas Permanent School Fund | 25,344 | $710.0K | 0.01% | −2,155−7.8% | Reduced |
| Acadian Asset Management LLC | 23,870 | $668.0K | 0.00% | −83,303−77.7% | Reduced |
| Yousif Capital Management, LLC | 23,647 | $662.6K | 0.01% | −4,645−16.4% | Reduced |
| Aviva PLC | 23,323 | $653.5K | 0.00% | −31,154−57.2% | Reduced |
| Occudo Quantitative Strategies LP | 23,213 | $650.4K | 0.08% | −20,237−46.6% | Reduced |
| Raymond James & Associates | 23,078 | $646.6K | 0.00% | −2,834−10.9% | Reduced |
| Comerica Bank | 20,752 | $601.0K | 0.00% | −6,840−24.8% | Reduced |
| Deutsche Bank AG | 21,145 | $592.5K | 0.00% | +2,836+15.5% | Added |
| Alberta Investment Management Corp | 20,982 | $587.9K | 0.01% | +4,918+30.6% | Added |
| American International Group, Inc. | 20,772 | $582.0K | 0.00% | −201−1.0% | Reduced |
| MetLife Investment Management | 20,467 | $573.5K | 0.00% | 00.0% | Unchanged |
| Gotham Asset Management, LLC | 20,262 | $567.7K | 0.02% | −2,770−12.0% | Reduced |
| Panagora Asset Management Inc | 19,785 | $554.4K | 0.00% | −4,883−19.8% | Reduced |
| Voya Investment Management LLC | 19,696 | $551.9K | 0.00% | 00.0% | Unchanged |