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 2023
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Mar 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
- 218
- +6 vs. Q4 2022
- Shares held
- 30.2M
- +1.08M (+3.7%) vs. Q4 2022
- Total value
- $1.13B
- +$316.8M (+38.8%) vs. Q4 2022
- New holders
- 32
- 76 more added
- Sold out
- 26
- 82 more reduced
1 institution that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2023
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| DekaBank Deutsche Girozentrale | 16,800 | $624.0K | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 16,786 | $629.5K | 0.01% | +16,775+152,500.0% | Added |
| SG Americas Securities, LLC | 16,870 | $633.0K | 0.01% | +6,282+59.3% | Added |
| Wells Fargo & Company | 17,091 | $640.9K | 0.00% | +13,577+386.4% | Added |
| Amalgamated Bank | 17,221 | $646.0K | 0.01% | −1,188−6.5% | Reduced |
| Louisiana State Employees Retirement System | 17,600 | $660.0K | 0.02% | −300−1.7% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 17,684 | $663.1K | 0.00% | −31−0.2% | Reduced |
| Voya Investment Management LLC | 19,696 | $738.6K | 0.00% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 19,704 | $738.9K | 0.00% | +7,104+56.4% | Added |
| Panagora Asset Management Inc | 19,785 | $741.9K | 0.00% | 00.0% | Unchanged |
| Yousif Capital Management, LLC | 20,427 | $766.0K | 0.01% | −3,220−13.6% | Reduced |
| MetLife Investment Management | 20,467 | $767.5K | 0.01% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 20,746 | $778.0K | 0.00% | −5,893−22.1% | Reduced |
| American International Group, Inc. | 20,870 | $782.6K | 0.01% | +98+0.5% | Added |
| Alberta Investment Management Corp | 20,982 | $786.8K | 0.01% | 00.0% | Unchanged |
| Juncture Wealth Strategies, LLC | 21,453 | $804.5K | 0.40% | +9,148+74.3% | Added |
| Gsa Capital Partners LLP | 21,852 | $819.0K | 0.08% | +21,852 | New |
| Royce & Associates LP | 22,315 | $836.8K | 0.01% | +22,315 | New |
| UBS Group AG | 22,990 | $862.1K | 0.00% | +5,916+34.6% | Added |
| Walleye Capital LLC | 23,231 | $871.2K | 0.02% | +23,231 | New |
| Raymond James & Associates | 23,561 | $883.5K | 0.00% | +483+2.1% | Added |
| Citigroup Inc | 24,749 | $928.1K | 0.00% | −6,998−22.0% | Reduced |
| Winton Group Ltd | 25,787 | $967.0K | 0.06% | −5,831−18.4% | Reduced |
| State of Alaska, Department of Revenue | 25,815 | $968.0K | 0.01% | −353−1.3% | Reduced |
| Jackson Creek Investment Advisors LLC | 25,877 | $970.0K | 0.41% | +25,877 | New |
| New York State Teachers Retirement System | 26,174 | $982.0K | 0.00% | −2,213−7.8% | Reduced |
| Los Angeles Capital Management LLC | 26,475 | $992.8K | 0.00% | +16,475+164.8% | Added |
| Virginia Retirement Systems Et Al | 26,900 | $1.01M | 0.01% | +1,300+5.1% | Added |
| Ziegler Capital Management, LLC | 27,637 | $1.04M | 0.04% | +270+1.0% | Added |
| Jane Street Group, LLC | 28,343 | $1.06M | 0.00% | +20,094+243.6% | Added |
| Deutsche Bank AG | 28,690 | $1.08M | 0.00% | +7,545+35.7% | Added |
| Assetmark, Inc | 29,673 | $1.11M | 0.00% | +1,727+6.2% | Added |
| FMR LLC | 30,155 | $1.13M | 0.00% | +847+2.9% | Added |
| Algert Global LLC | 30,320 | $1.14M | 0.05% | +21,667+250.4% | Added |
| Citadel Advisors LLC | 31,341 | $1.18M | 0.00% | −11,166−26.3% | Reduced |
| Tucker Asset Management LLC | 31,672 | $1.19M | 0.36% | +31,672 | New |
| BNP Paribas Arbitrage, SA | 31,798 | $1.19M | 0.00% | +23,345+276.2% | Added |
| HRT Financial LP | 31,947 | $1.20M | 0.01% | +14,254+80.6% | Added |
| LSV Asset Management | 33,200 | $1.25M | 0.00% | +22,500+210.3% | Added |
| Truist Financial Corp | 33,404 | $1.25M | 0.00% | +4,836+16.9% | Added |
| Allianz Asset Management GmbH | 33,600 | $1.26M | 0.00% | −24,145−41.8% | Reduced |
| Texas Permanent School Fund | 33,808 | $1.27M | 0.01% | +8,464+33.4% | Added |
| Cornercap Investment Counsel Inc | 35,233 | $1.32M | 0.23% | −5,813−14.2% | Reduced |
| State of Wisconsin Investment Board | 35,239 | $1.32M | 0.00% | −4,052−10.3% | Reduced |
| Great West Life Assurance Co | 35,490 | $1.33M | 0.00% | −2,475−6.5% | Reduced |
| Russell Investments Group, Ltd. | 36,216 | $1.36M | 0.00% | −36,886−50.5% | Reduced |
| Prudential Financial Inc | 37,117 | $1.39M | 0.00% | −69,616−65.2% | Reduced |
| Summit Global Investments | 37,300 | $1.40M | 0.11% | +7,800+26.4% | Added |
| Thrivent Financial for Lutherans | 37,359 | $1.40M | 0.00% | −1,310−3.4% | Reduced |
| UBS Asset Management Americas Inc | 39,051 | $1.46M | 0.00% | −5,036−11.4% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 39,916 | $1.50M | 0.01% | −430−1.1% | Reduced |
| Aviva PLC | 39,959 | $1.50M | 0.01% | +16,636+71.3% | Added |
| First Trust Advisors LP | 40,333 | $1.51M | 0.00% | −24,656−37.9% | Reduced |
| Barclays PLC | 41,314 | $1.55M | 0.00% | −21,616−34.3% | Reduced |
| Martingale Asset Management L P | 42,168 | $1.58M | 0.03% | −3,980−8.6% | Reduced |
| Susquehanna International Group, LLP | 42,377 | $1.59M | 0.00% | +42,377 | New |
| Victory Capital Management Inc | 43,738 | $1.64M | 0.00% | +6,646+17.9% | Added |
| Alliancebernstein L.P. | 44,897 | $1.68M | 0.00% | −35,547−44.2% | Reduced |
| D.A. Davidson & Co. | 45,074 | $1.69M | 0.02% | −3,837−7.8% | Reduced |
| Exchange Traded Concepts, LLC | 46,583 | $1.75M | 0.05% | +9,431+25.4% | Added |
| Renaissance Group LLC | 46,859 | $1.76M | 0.08% | +2,263+5.1% | Added |
| California State Teachers Retirement System | 48,216 | $1.81M | 0.00% | −1,193−2.4% | Reduced |
| Trexquant Investment LP | 56,504 | $2.12M | 0.06% | +20,319+56.2% | Added |
| Credit Suisse AG | 57,956 | $2.17M | 0.00% | +2,246+4.0% | Added |
| Two Sigma Advisers, LP | 59,100 | $2.22M | 0.01% | −21,300−26.5% | Reduced |
| New York State Common Retirement Fund | 59,786 | $2.24M | 0.00% | +31,253+109.5% | Added |
| Cubist Systematic Strategies, LLC | 59,974 | $2.25M | 0.02% | +46,014+329.6% | Added |
| Marshall Wace, LLP | 64,209 | $2.41M | 0.01% | +64,209 | New |
| Point72 Asset Management, L.P. | 65,418 | $2.45M | 0.01% | +65,418 | New |
| Public Sector Pension Investment Board | 66,302 | $2.49M | 0.02% | −2,282−3.3% | Reduced |
| Voloridge Investment Management, LLC | 72,944 | $2.74M | 0.01% | −21,677−22.9% | Reduced |
| Arrowstreet Capital, Limited Partnership | 74,274 | $2.79M | 0.00% | −91,766−55.3% | Reduced |
| Shaker Investments LLC | 82,253 | $3.08M | 1.72% | +966+1.2% | Added |
| Swiss National Bank | 83,400 | $3.13M | 0.00% | −11,200−11.8% | Reduced |
| Globeflex Capital L P | 89,192 | $3.34M | 0.41% | +23,070+34.9% | Added |
| Rhumbline Advisers | 90,967 | $3.41M | 0.00% | +6,609+7.8% | Added |
| Legal & General Group Plc | 94,762 | $3.55M | 0.00% | +2,172+2.3% | Added |
| Allspring Global Investments Holdings, LLC | 100,045 | $3.75M | 0.01% | −10,320−9.4% | Reduced |
| Janus Henderson Group PLC | 103,941 | $3.90M | 0.00% | +96,226+1,247.3% | Added |
| AQR Capital Management LLC | 110,887 | $4.16M | 0.01% | −1,716−1.5% | Reduced |
| Mutual of America Capital Management LLC | 111,123 | $4.17M | 0.05% | −4,904−4.2% | Reduced |
| JPMorgan Chase & Co | 117,767 | $4.42M | 0.00% | +4,014+3.5% | Added |
| American Century Companies Inc | 120,821 | $4.55M | 0.00% | +82,021+211.4% | Added |
| Jacobs Levy Equity Management, Inc | 126,381 | $4.74M | 0.03% | −64,291−33.7% | Reduced |
| Lam Group, Inc. | 130,250 | $4.88M | 4.79% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 137,313 | $5.15M | 0.01% | +79,365+137.0% | Added |
| AXA S.A. | 151,855 | $5.69M | 0.02% | +2,449+1.6% | Added |
| Silvercrest Asset Management Group LLC | 154,868 | $5.81M | 0.04% | −68,290−30.6% | Reduced |
| Hillsdale Investment Management Inc. | 155,038 | $5.81M | 0.50% | −17,200−10.0% | Reduced |
| Assenagon Asset Management S.A. | 169,056 | $6.34M | 0.02% | −4,423−2.5% | Reduced |
| Ameriprise Financial Inc | 169,239 | $6.35M | 0.00% | −5,581−3.2% | Reduced |
| Oberweis Asset Management Inc | 178,200 | $6.68M | 1.04% | +44,200+33.0% | Added |
| Frontier Capital Management Co LLC | 187,060 | $7.01M | 0.07% | −16,911−8.3% | Reduced |
| Goldman Sachs Group Inc | 221,675 | $8.31M | 0.00% | −45,592−17.1% | Reduced |
| Principal Financial Group Inc | 232,740 | $8.73M | 0.01% | −6,212−2.6% | Reduced |
| Bank of America Corp | 290,737 | $10.9M | 0.00% | +225,728+347.2% | Added |
| Eagle Asset Management Inc | 306,770 | $11.5M | 0.07% | +5,897+2.0% | Added |
| Nuveen Asset Management, LLC | 318,324 | $11.9M | 0.00% | −65,681−17.1% | Reduced |
| Mesirow Institutional Investment Management, Inc. | 325,669 | $12.2M | 1.33% | −48,745−13.0% | Reduced |
| Charles Schwab Investment Management Inc | 329,913 | $12.4M | 0.00% | +3,125+1.0% | Added |