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, Q3 2025
Institutional positions in Amphastar Pharmaceuticals, Inc. as of Sep 30, 2025. 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
- 243
- 0 vs. Q2 2025
- Shares held
- 32.7M
- +30.4K (+0.1%) vs. Q2 2025
- Total value
- $872.8M
- +$120.8M (+16.1%) vs. Q2 2025
- New holders
- 34
- 82 more added
- Sold out
- 34
- 92 more reduced
2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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, Q3 2025
Shares, value and share of portfolio for each institution holding Amphastar Pharmaceuticals, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Capital Advisors, Ltd. LLC | 8 | $0 | 0.00% | +8 | New |
| Caitong International Asset Management Co., Ltd | 3 | $80 | 0.00% | −369−99.2% | Reduced |
| Abound Wealth Management | 4 | $107 | 0.00% | 00.0% | Unchanged |
| Legacy Wealth Managment, LLC | 10 | $267 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 15 | $400 | 0.00% | −80−84.2% | Reduced |
| Kilter Group LLC | 15 | $400 | 0.00% | 00.0% | Unchanged |
| Kayne Anderson Rudnick Investment Management LLC | 15 | $400 | 0.00% | 00.0% | Unchanged |
| Annis Gardner Whiting Capital Advisors, LLC | 16 | $427 | 0.00% | 00.0% | Unchanged |
| Bell Investment Advisors, Inc | 16 | $427 | 0.00% | +16 | New |
| Sunbelt Securities, Inc. | 22 | $586 | 0.00% | +22 | New |
| Rialto Wealth Management, LLC | 23 | $613 | 0.00% | +3+15.0% | Added |
| Hughes Financial Services, LLC | 24 | $627 | 0.00% | +24 | New |
| Farmers & Merchants Investments Inc | 25 | $666 | 0.00% | −3−10.7% | Reduced |
| Private Wealth Management Group, LLC | 27 | $720 | 0.00% | −152−84.9% | Reduced |
| Atlantic Trust, LLC | 33 | $880 | 0.00% | 00.0% | Unchanged |
| Picton Mahoney Asset Management | 24 | $1.00K | 0.00% | 00.0% | Unchanged |
| UMA Financial Services, Inc. | 41 | $1.09K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 42 | $1.12K | 0.00% | +2+5.0% | Added |
| Private Trust Co NA | 54 | $1.44K | 0.00% | +5+10.2% | Added |
| HighMark Wealth Management LLC | 55 | $1.47K | 0.00% | +35+175.0% | Added |
| MAI Capital Management | 58 | $1.55K | 0.00% | −128−68.8% | Reduced |
| Northwestern Mutual Wealth Management Co | 62 | $1.65K | 0.00% | 00.0% | Unchanged |
| Wealthspire Advisors, LLC | 70 | $1.87K | 0.00% | +70 | New |
| Covestor Ltd | 56 | $2.00K | 0.00% | −10−15.2% | Reduced |
| Parallel Advisors, LLC | 86 | $2.29K | 0.00% | −216−71.5% | Reduced |
| EverSource Wealth Advisors, LLC | 100 | $2.67K | 0.00% | −159−61.4% | Reduced |
| CoreCap Advisors, LLC | 107 | $2.85K | 0.00% | +48+81.4% | Added |
| Avion Wealth | 124 | $3.00K | 0.00% | +64+106.7% | Added |
| Optiver Holding B.V. | 146 | $3.89K | 0.00% | +146 | New |
| City State Bank | 150 | $4.00K | 0.00% | 00.0% | Unchanged |
| Bessemer Group Inc | 143 | $4.00K | 0.00% | −57−28.5% | Reduced |
| Daiwa Securities Group Inc. | 135 | $4.00K | 0.00% | −50−27.0% | Reduced |
| Truvestments Capital LLC | 154 | $4.10K | 0.00% | −163−51.4% | Reduced |
| Parkside Financial Bank & Trust | 173 | $4.61K | 0.00% | +37+27.2% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 180 | $5.00K | 0.00% | −19−9.5% | Reduced |
| WealthCollab, LLC | 207 | $5.52K | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 207 | $5.57K | 0.00% | +16+8.4% | Added |
| Spire Wealth Management | 217 | $5.78K | 0.00% | +5+2.4% | Added |
| SRS Capital Advisors, Inc. | 238 | $6.34K | 0.00% | +157+193.8% | Added |
| Umb Bank N A | 247 | $6.58K | 0.00% | +228+1,200.0% | Added |
| Essential Partners LLC | 250 | $6.66K | 0.00% | +94+60.3% | Added |
| Simplex Trading, LLC | 274 | $7.00K | 0.00% | −1,105−80.1% | Reduced |
| Harbor Capital Advisors, Inc. | 276 | $7.00K | 0.00% | +10+3.8% | Added |
| Harbour Investments, Inc. | 270 | $7.20K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 271 | $7.22K | 0.00% | +18+7.1% | Added |
| Versant Capital Management, Inc | 291 | $7.75K | 0.00% | −333−53.4% | Reduced |
| Jones Financial Companies LLLP | 367 | $9.85K | 0.00% | 00.0% | Unchanged |
| Salomon & Ludwin, LLC | 377 | $10.1K | 0.00% | +377 | New |
| Larson Financial Group LLC | 409 | $10.9K | 0.00% | +381+1,360.7% | Added |
| Rockefeller Capital Management L.P. | 423 | $11.3K | 0.00% | +423 | New |
| Fifth Third Bancorp | 451 | $12.0K | 0.00% | −29−6.0% | Reduced |
| Public Employees Retirement System of Ohio | 468 | $12.5K | 0.00% | +54+13.0% | Added |
| TD Private Client Wealth LLC | 474 | $12.6K | 0.00% | −1,221−72.0% | Reduced |
| Signaturefd, LLC | 522 | $13.9K | 0.00% | −750−59.0% | Reduced |
| Richardson Financial Services Inc. | 611 | $16.3K | 0.01% | +611 | New |
| Nisa Investment Advisors, LLC | 629 | $16.8K | 0.00% | +255+68.2% | Added |
| 1620 Investment Advisors, Inc. | 682 | $18.2K | 0.01% | 00.0% | Unchanged |
| CIBC Private Wealth Group, LLC | 721 | $19.2K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 822 | $21.9K | 0.00% | −2,761−77.1% | Reduced |
| US Bancorp | 850 | $22.7K | 0.00% | +419+97.2% | Added |
| Massmutual Trust Co FSB | 927 | $24.7K | 0.00% | −335−26.5% | Reduced |
| Farther Finance Advisors, LLC | 944 | $25.2K | 0.00% | +737+356.0% | Added |
| FNY Investment Advisers, LLC | 1,000 | $26.0K | 0.01% | +1,000 | New |
| GF Fund Management Co. Ltd. | 1,000 | $26.6K | 0.00% | −230−18.7% | Reduced |
| Global Retirement Partners, LLC | 1,024 | $27.3K | 0.00% | +703+219.0% | Added |
| Quarry LP | 1,183 | $31.5K | 0.01% | +1,183 | New |
| GAMMA Investing LLC | 1,223 | $32.6K | 0.00% | −939−43.4% | Reduced |
| Allworth Financial LP | 1,475 | $39.3K | 0.00% | −70−4.5% | Reduced |
| CWM, LLC | 1,508 | $40.0K | 0.00% | −2,994−66.5% | Reduced |
| Shell Asset Management Co | 1,492 | $40.0K | 0.00% | −2,681−64.2% | Reduced |
| IFP Advisors, Inc | 1,570 | $41.8K | 0.00% | −465−22.9% | Reduced |
| Principal Securities, Inc. | 1,604 | $42.7K | 0.00% | +1,586+8,811.1% | Added |
| Ronald Blue Trust, Inc. | 1,768 | $47.1K | 0.00% | −8−0.5% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 1,798 | $47.9K | 0.00% | −23−1.3% | Reduced |
| Oakworth Capital, Inc. | 1,874 | $49.9K | 0.00% | −4,126−68.8% | Reduced |
| Group One Trading, L.P. | 2,071 | $55.2K | 0.00% | +2,071 | New |
| Quadrant Capital Group LLC | 3,076 | $82.0K | 0.00% | +3,076 | New |
| Ameritas Investment Partners, Inc. | 3,101 | $82.6K | 0.00% | −661−17.6% | Reduced |
| Hantz Financial Services, Inc. | 3,122 | $83.0K | 0.00% | +1,745+126.7% | Added |
| State of Wyoming | 3,301 | $88.0K | 0.01% | +578+21.2% | Added |
| Wolverine Asset Management LLC | 4,743 | $126.4K | 0.00% | +4,743 | New |
| Public Employees Retirement Association of Colorado | 5,265 | $140.0K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 5,531 | $147.4K | 0.00% | −952−14.7% | Reduced |
| Pacer Advisors, Inc. | 5,996 | $159.8K | 0.00% | −320,102−98.2% | Reduced |
| FMR LLC | 6,472 | $172.5K | 0.00% | −731−10.1% | Reduced |
| KLP Kapitalforvaltning AS | 7,400 | $197.2K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 7,504 | $200.0K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 7,665 | $204.3K | 0.00% | +6,830+818.0% | Added |
| Commonwealth Equity Services, LLC | 7,860 | $209.0K | 0.00% | +7,860 | New |
| Round Rock Advisors, LLC | 8,580 | $212.1K | 0.03% | +8,580 | New |
| Pathstone Holdings, LLC | 7,984 | $212.8K | 0.00% | +7,984 | New |
| Oregon Public Employees Retirement Fund | 8,042 | $214.3K | 0.00% | −400−4.7% | Reduced |
| China Universal Asset Management Co., Ltd. | 8,150 | $217.2K | 0.02% | −1,318−13.9% | Reduced |
| Profund Advisors LLC | 8,188 | $218.2K | 0.01% | −1,450−15.0% | Reduced |
| MML Investors Services, LLC | 8,462 | $225.5K | 0.00% | +8,462 | New |
| Quest Partners LLC | 8,575 | $228.5K | 0.01% | −20,307−70.3% | Reduced |
| ProShare Advisors LLC | 8,626 | $229.9K | 0.00% | −1,413−14.1% | Reduced |
| Bank of Montreal | 8,968 | $239.0K | 0.00% | −2,822−23.9% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 9,118 | $243.0K | 0.00% | −322−3.4% | Reduced |
| Yousif Capital Management, LLC | 9,273 | $247.1K | 0.00% | −1,805−16.3% | Reduced |