Amphastar PharmaceuticalsAMPH
13F holders, Q4 2024 (December 31)263holders −16
28new positions
49sold out
7famous investors
$37.14avg. 13F price*
At the end of Q4 2024, 263 institutions reported holding Amphastar Pharmaceuticals Inc. (AMPH) in their 13F filings, down 16 from Q3 2024. 28 opened new positions and 49 sold out. The largest holders were BlackRock, Inc. ($227.2M), Vanguard Group Inc. ($100.8M) and TD Asset Management Inc ($68.3M). 7 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Joel Greenblatt (0.0% of Gotham Asset Management's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Amphastar Pharmaceuticals Inc.
- CUSIP
- 03209R103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2024 → Q4 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 28 | $35.8M |
| Exits | 49 | $52.0M |
All 13F filers, Q3 2024 → Q4 2024: 3,883,781 shares bought and 4,146,917 shares sold, net −263,136 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 263 holders
| BlackRock, Inc. | 0.00% | Add +1.4% | 6,117,822 | $227.2M |
| Vanguard Group Inc. | 0.00% | Add +0.1% | 2,714,628 | $100.8M |
| TD Asset Management Inc | 0.06% | Reduce -13.8% | 1,840,286 | $68.3M |
| State Street Corp. | 0.00% | Add +4.3% | 1,596,110 | $59.3M |
| Neuberger Berman Group LLC | 0.04% | Reduce -14.9% | 1,374,125 | $51.0M |
| Pacer Advisors, Inc. | 0.11% | Add +51977.4% | 1,350,368 | $50.1M |
| Dimensional Fund Advisors LP | 0.01% | Add +9.6% | 1,198,590 | $44.5M |
| Fuller & Thaler Asset Management, Inc. | 0.16% | Reduce -10.1% | 1,132,926 | $42.1M |
| Epoch Investment Partners, Inc. | 0.20% | Reduce -7.5% | 1,101,273 | $40.9M |
| Boston Trust Walden Corp | 0.26% | Add +81.4% | 978,920 | $36.3M |
| Geode Capital Management, LLC | 0.00% | Reduce -0.5% | 916,081 | $34.0M |
| Federated Hermes, Inc. | 0.07% | Reduce -57.7% | 823,487 | $30.6M |
| Morgan Stanley | 0.00% | Reduce -6.7% | 632,074 | $23.5M |
| Northern Trust Corp. | 0.00% | Add +5.1% | 613,170 | $22.8M |
| Marshall Wace, LLP | 0.03% | Add +7.1% | 608,706 | $22.6M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -0.4% | 566,656 | $21.0M |
| Renaissance Technologies | 0.03% | Add +7.4% | 525,500 | $19.5M |
| Bessemer Group Inc. | 0.03% | Add +2.4% | 488,630 | $18.1M |
| American Century Companies Inc. | 0.01% | Reduce -26.2% | 472,017 | $17.5M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -4.8% | 427,835 | $15.9M |
| Boston Partners | 0.02% | New | 426,636 | $15.8M |
| Granite Investment Partners, LLC | 0.64% | Reduce -2.2% | 396,702 | $14.7M |
| Mesirow Institutional Investment Management, Inc. | 1.09% | Reduce -8.1% | 380,389 | $14.1M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.7% | 347,512 | $12.9M |
| Invesco Ltd. | 0.00% | Reduce -10.2% | 298,864 | $11.1M |
| Bank of New York Mellon Corp | 0.00% | Add +12.7% | 285,863 | $10.6M |
| Nordea Investment Management AB | 0.01% | Add +4.8% | 279,714 | $10.4M |
| Millennium Management | 0.01% | Reduce -1.2% | 256,556 | $9.5M |
| Systematic Financial Management LP | 0.23% | New | 246,348 | $9.1M |
| Hotchkis & Wiley Capital Management LLC | 0.03% | Add +6.7% | 237,520 | $8.8M |
| Principal Financial Group Inc. | 0.00% | Add +3.0% | 207,978 | $7.7M |
| Janus Henderson Group PLC | 0.00% | Add +28.8% | 189,347 | $7.0M |
| Oberweis Asset Management Inc./ | 0.32% | Add +14.6% | 184,595 | $6.9M |
| Silvercrest Asset Management Group LLC | 0.04% | Reduce -1.0% | 166,814 | $6.2M |
| Assenagon Asset Management S.A. | 0.01% | Reduce -3.6% | 161,399 | $6.0M |
| UBS Group AG | 0.00% | Add +52.2% | 153,742 | $5.7M |
| JPMorgan Chase & Co. | 0.00% | Add +107.8% | 153,571 | $5.7M |
| Clark Capital Management Group, Inc. | 0.04% | Reduce -3.7% | 148,075 | $5.5M |
| Ameriprise Financial Inc. | 0.00% | Add +1.0% | 146,015 | $5.4M |
| Voloridge Investment Management, LLC | 0.02% | Add +16.2% | 143,436 | $5.3M |
| Citadel Advisors | 0.00% | Add +3.8% | 140,413 | $5.2M |
| Portolan Capital Management, LLC | 0.33% | Reduce -60.0% | 131,123 | $4.9M |
| Lam Group, Inc. | 3.46% | No change | 130,800 | $4.9M |
| Frontier Capital Management Co. LLC | 0.04% | Reduce -0.2% | 123,360 | $4.6M |
| D. E. Shaw & Co. | 0.01% | Add +402.4% | 118,851 | $4.4M |
| Qube Research & Technologies Ltd | 0.01% | Reduce -1.2% | 115,292 | $4.3M |
| Bank of America Corp. | 0.00% | Reduce -29.1% | 112,094 | $4.2M |
| Trexquant Investment LP | 0.05% | Add +18.2% | 105,528 | $3.9M |
| Legal & General Group Plc | 0.00% | Reduce -0.6% | 103,741 | $3.9M |
| Renaissance Group LLC | 0.15% | Add +42.5% | 99,572 | $3.7M |
| Jane Street Group, LLC | 0.01% | Add +56.4% | 99,487 | $3.7M |
| Two Sigma Investments, LP | 0.01% | Reduce -0.6% | 98,184 | $3.6M |
| Nuveen Asset Management, LLC | 0.00% | Reduce -54.0% | 95,665 | $3.6M |
| Public Sector Pension Investment Board | 0.01% | Add +15.9% | 93,430 | $3.5M |
| Raymond James Financial Inc. | 0.00% | — | 92,904 | $3.4M |
| Mutual of America Capital Management LLC | 0.04% | Reduce -0.1% | 92,251 | $3.4M |
| PDT Partners, LLC | 0.30% | Add +11.5% | 90,484 | $3.4M |
| Rhumbline Advisers | 0.00% | Add +1.4% | 87,327 | $3.2M |
| Two Sigma Advisers, LP | 0.01% | Reduce -12.6% | 85,900 | $3.2M |
| Barclays PLC | 0.00% | Add +13.9% | 84,790 | $3.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +8.9% | 83,231 | $3.1M |
| First Trust Advisors LP | 0.00% | Add +350.0% | 81,129 | $3.0M |
| Swiss National Bank | 0.00% | No change | 76,400 | $2.8M |
| New York State Common Retirement Fund | 0.00% | No change | 70,490 | $2.6M |
| Bridge City Capital, LLC | 0.69% | Reduce -1.4% | 70,095 | $2.6M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | Reduce -19.5% | 67,367 | $2.5M |
| Victory Capital Management Inc. | 0.00% | Reduce -71.0% | 63,387 | $2.4M |
| Citigroup Inc. | 0.00% | Add +9.3% | 63,171 | $2.3M |
| Aurora Investment Counsel | 1.11% | Add +0.0% | 54,705 | $2.0M |
| Alliancebernstein L.P. | 0.00% | Add +1.8% | 50,630 | $1.9M |
| Campbell & CO Investment Adviser LLC | 0.14% | New | 47,566 | $1.8M |
| Twinbeech Capital LP | 0.03% | New | 46,797 | $1.7M |
| Prudential Financial Inc. | 0.00% | Reduce -1.6% | 38,694 | $1.7M |
| Aristeia Capital, L.L.C. | 0.11% | New | 43,235 | $1.6M |
| Schonfeld Strategic Advisors LLC | 0.01% | Add +343.6% | 42,614 | $1.6M |
| Intech Investment Management LLC | 0.02% | Add +224.6% | 42,156 | $1.6M |
| Assetmark, Inc. | 0.00% | Reduce -4.5% | 41,921 | $1.6M |
| Martingale Asset Management L P | 0.04% | Reduce -0.1% | 40,205 | $1.5M |
| BNP Paribas Financial Markets | 0.00% | Reduce -60.9% | 36,964 | $1.4M |
| LSV Asset Management | 0.00% | Reduce -54.7% | 36,400 | $1.4M |
| California State Teachers Retirement System | 0.00% | Reduce -1.6% | 36,369 | $1.4M |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -5.2% | 35,045 | $1.3M |
| Deutsche Bank AG | 0.00% | Add +46.6% | 34,082 | $1.3M |
| Envestnet Asset Management Inc. | 0.00% | Reduce -7.1% | 32,203 | $1.2M |
| Susquehanna International Group, LLP | 0.00% | Add +111.5% | 31,266 | $1.2M |
| AQR Capital Management | 0.00% | Reduce -29.3% | 29,471 | $1.1M |
| Engineers Gate Manager LP | 0.02% | Add +10.1% | 29,108 | $1.1M |
| Thrivent Financial for Lutherans | 0.00% | Reduce -2.8% | 28,988 | $1.1M |
| Royal Bank of Canada | 0.00% | Add +8.0% | 28,632 | $1.1M |
| Gotham Asset Management | 0.01% | Reduce -20.4% | 28,448 | $1.1M |
| Sei Investments Co. | 0.00% | Reduce -31.8% | 28,125 | $1.0M |
| Arkadios Wealth Advisors | 0.06% | Add +5.2% | 27,964 | $1.0M |
| Franklin Resources Inc. | 0.00% | Reduce -3.7% | 27,405 | $1.0M |
| Chatham Capital Group, Inc. | 0.17% | Reduce -1.4% | 27,295 | $1.0M |
| State of Wisconsin Investment Board | 0.00% | Reduce -56.7% | 25,649 | $952K |
| Quantbot Technologies LP | 0.03% | New | 25,454 | $945K |
| Advisor OS, LLC | 0.11% | Reduce -2.4% | 25,405 | $943K |
| Glenmede Trust Co. NA | 0.00% | Reduce -34.7% | 24,743 | $919K |
| Polaris Capital Management, LLC | 0.04% | New | 24,500 | $910K |
| New York State Teachers Retirement System | 0.00% | No change | 23,866 | $886K |
| Wells Fargo & Company | 0.00% | Reduce -44.8% | 23,552 | $874K |
| MetLife Investment Management, LLC | 0.00% | Add +3.7% | 23,452 | $871K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +3.8% | 21,876 | $812K |
| Man Group plc | 0.00% | New | 21,825 | $810K |
| Redwood Investments, LLC | 0.21% | Reduce -0.1% | 21,459 | $797K |
| FMR LLC | 0.00% | Reduce -37.8% | 21,345 | $793K |
| State of Alaska, Department of Revenue | 0.01% | Reduce -1.6% | 21,325 | $791K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -2.8% | 21,257 | $789K |
| Illinois Municipal Retirement Fund | 0.01% | Reduce -2.0% | 20,959 | $778K |
| DekaBank Deutsche Girozentrale | 0.00% | No change | 20,848 | $772K |
| Corebridge Financial, Inc. | 0.00% | Reduce -7.3% | 20,449 | $759K |
| LPL Financial LLC | 0.00% | Add +8.0% | 20,366 | $756K |
| Amundi | 0.00% | Add +193.0% | 19,583 | $717K |
| Dynamic Technology Lab Private Ltd | 0.11% | Add +309.0% | 19,150 | $711K |
| Segall Bryant & Hamill, LLC | 0.01% | Reduce -0.5% | 18,881 | $701K |
| Fox Run Management, L.L.C. | 0.12% | New | 18,526 | $688K |
| Shaker Investments LLC | 0.29% | Reduce -0.1% | 18,520 | $688K |
| Legato Capital Management LLC | 0.09% | No change | 18,461 | $685K |
| Louisiana State Employees Retirement System | 0.01% | Reduce -1.6% | 18,100 | $672K |
| Jain Global LLC | 0.02% | — | 17,974 | $667K |
| Wellington Management Group LLP | 0.00% | Reduce -9.8% | 17,784 | $660K |
| Squarepoint Ops LLC | 0.00% | Add +208.0% | 17,664 | $656K |
| Gsa Capital Partners LLP | 0.05% | Add +179.0% | 17,434 | $647K |
| Illumine Investment Management, LLC | 0.52% | — | 17,049 | $633K |
| State of Tennessee, Department of Treasury | 0.00% | Reduce -15.4% | 16,792 | $623K |
| Voya Investment Management LLC | 0.00% | Reduce -2.5% | 16,785 | $623K |
| Osaic Holdings, Inc. | 0.00% | Reduce -54.3% | 16,200 | $602K |
| Corient Private Wealth LP | 0.00% | Add +0.2% | 15,381 | $571K |
| Handelsbanken Fonder AB | 0.00% | Reduce -14.8% | 14,400 | $535K |
| Advisory Research Inc. | 0.09% | Add +0.3% | 13,853 | $514K |
| ProShare Advisors LLC | 0.00% | Add +27.1% | 13,852 | $514K |
| Allspring Global Investments Holdings, LLC | 0.00% | Reduce -42.0% | 14,064 | $511K |
| EntryPoint Capital, LLC | 0.21% | Add +46.7% | 13,658 | $507K |
| Maryland State Retirement & Pension System | 0.01% | Reduce -1.5% | 12,630 | $469K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Add +1.5% | 12,096 | $449K |
| Comerica Bank | 0.00% | Reduce -8.5% | 11,805 | $438K |
| Teachers Retirement System of the State of Kentucky | 0.00% | No change | 11,691 | $434K |
| Teacher Retirement System of Texas | 0.00% | Add +17.7% | 11,548 | $429K |
| Yousif Capital Management, LLC | 0.00% | Reduce -3.5% | 11,346 | $421K |
| Invst, LLC | 0.05% | Reduce -21.1% | 11,346 | $421K |
| Arizona State Retirement System | 0.00% | Add +0.3% | 11,304 | $420K |
| D.A. Davidson & Co. | 0.00% | New | 11,244 | $417K |
| Amalgamated Bank | 0.00% | Reduce -2.5% | 10,998 | $408K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 10,913 | $405K |
| China Universal Asset Management Co., Ltd. | 0.04% | Add +8.9% | 10,195 | $379K |
| Cim, LLC | 0.05% | Add +1.3% | 10,078 | $374K |
| Centiva Capital, LP | 0.01% | Add +51.6% | 9,803 | $364K |
| Sanctuary Advisors, LLC | 0.00% | Reduce -2.5% | 9,983 | $363K |
| Pathstone Holdings, LLC | 0.00% | Reduce -4.2% | 9,694 | $360K |
| Vestcor Inc | 0.01% | No change | 9,383 | $348K |
| Sterling Capital Management LLC | 0.00% | No change | 9,319 | $346K |
| Point72 Asset Management | 0.00% | Reduce -76.3% | 9,200 | $342K |
| Royce & Associates LP | 0.00% | Reduce -1.9% | 8,902 | $331K |
| HSBC Holdings PLC | 0.00% | Add +23.4% | 8,991 | $330K |
| Oregon Public Employees Retirement Fund | 0.01% | Reduce -1.1% | 8,842 | $328K |
| Cornerstone Investment Partners, LLC | 0.02% | Add +0.1% | 8,730 | $324K |
| Walleye Capital LLC | 0.00% | New | 8,666 | $322K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | — | 8,288 | $308K |
| Bank of Montreal | 0.00% | Add +4.6% | 8,215 | $305K |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.00% | Reduce -1.3% | 8,006 | $297K |
| Hennion & Walsh Asset Management, Inc. | 0.01% | Reduce -1.2% | 7,939 | $295K |
| Profund Advisors LLC | 0.01% | Reduce -0.5% | 7,920 | $294K |
| Trek Financial, LLC | 0.02% | Add +15.4% | 7,638 | $284K |
| Cynosure Group, LLC | 0.04% | Add +2.6% | 7,618 | $283K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +20.2% | 7,504 | $279K |
| Hohimer Wealth Management, LLC | 0.05% | Add +7.0% | 7,485 | $278K |
| KLP Kapitalforvaltning As | 0.00% | — | 7,400 | $275K |
| Alps Advisors Inc. | 0.00% | No change | 7,395 | $275K |
| Significant Wealth Partners LLC | 0.14% | New | 7,135 | $265K |
| Aquatic Capital Management LLC | 0.01% | New | 7,036 | $261K |
| Tiemann Investment Advisors, LLC | 0.11% | New | 6,962 | $258K |
| Brevan Howard Capital Management LP | 0.01% | New | 6,905 | $256K |
| Allianz Asset Management GmbH | 0.00% | No change | 6,700 | $249K |
| Axq Capital, LP | 0.11% | New | 6,621 | $246K |
| Yorktown Management & Research Co Inc | 0.24% | New | 6,600 | $245K |
| Verition Fund Management LLC | 0.00% | Add +22.8% | 6,338 | $235K |
| Virtus Investment Advisers, LLC | 0.18% | No change | 6,109 | $227K |
| Truist Financial Corp. | 0.00% | Reduce -1.1% | 5,661 | $210K |
| Dakota Wealth Management | 0.00% | Add +31.8% | 5,486 | $204K |
| Cornercap Investment Counsel Inc. | 0.06% | No change | 5,421 | $201K |
| Alan B Lancz & Associates, Inc. | 0.20% | No change | 5,400 | $201K |
| Public Employees Retirement Association of Colorado | 0.00% | No change | 5,265 | $195K |
| Oakworth Capital, Inc. | 0.01% | No change | 5,023 | $187K |
| AlphaQuest LLC | 0.02% | Reduce -35.9% | 4,862 | $181K |
| Shell Asset Management Co. | 0.01% | Reduce -0.3% | 4,834 | $179K |
| PNC Financial Services Group, Inc. | 0.00% | Add +90.1% | 4,203 | $156K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 3,762 | $140K |
| Mendota Financial Group, LLC | 0.08% | Reduce -24.0% | 3,426 | $127K |
| EMC Capital Management | 0.07% | No change | 3,113 | $116K |
| Aster Capital Management (DIFC) Ltd | 0.04% | New | 2,869 | $107K |
| 1620 Investment Advisors, Inc. | 0.07% | Reduce -3.3% | 2,288 | $85K |
| KBC Group NV | 0.00% | Add +43.1% | 2,159 | $80K |
| TD Private Client Wealth LLC | 0.00% | Add +22.7% | 2,099 | $78K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Reduce -9.0% | 1,602 | $61K |
| Lazard Asset Management LLC | 0.00% | Reduce -78.0% | 1,630 | $60K |
| Allworth Financial LP | 0.00% | No change | 1,426 | $52K |
| Huntington National Bank | 0.00% | Add +36.9% | 1,340 | $50K |
| Asset Management One Co., Ltd. | 0.00% | Reduce -19.4% | 1,297 | $49K |
| Pinnacle Financial Partners Inc | 0.00% | No change | 1,000 | $49K |
| Virtus Fund Advisers, LLC | 0.14% | Add +3.6% | 1,220 | $45K |
| Blue Trust, Inc. | 0.00% | Reduce -18.1% | 1,216 | $45K |
| Cwm, LLC | 0.00% | Add +15.9% | 1,154 | $43K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +43.7% | 1,145 | $43K |
| Concourse Financial Group Securities, Inc. | 0.00% | Add +10.8% | 1,063 | $38K |
| GF Fund Management Co. LTD. | 0.00% | — | 1,010 | $38K |
| Leonteq Securities AG | 0.00% | No change | 1,000 | $37K |
| Parkside Financial Bank & Trust | 0.00% | Add +806.5% | 979 | $36K |
| GAMMA Investing LLC | 0.00% | Add +37.1% | 909 | $34K |
| US Bancorp \de | 0.00% | Reduce -88.5% | 848 | $31K |
| Principal Securities, Inc. | 0.00% | Reduce -19.0% | 783 | $29K |
| Nisa Investment Advisors, LLC | 0.00% | Add +7.4% | 773 | $29K |
| Quadrant Capital Group LLC | 0.00% | No change | 740 | $27K |
| Smartleaf Asset Management LLC | 0.00% | Add +222.1% | 715 | $26K |
| Nvwm, LLC | 0.01% | Add +47.2% | 627 | $23K |
| Caitong International Asset Management Co., Ltd | 0.02% | — | 604 | $22K |
| CIBC Private Wealth Group LLC | 0.00% | Reduce -2.8% | 561 | $21K |
| Simplex Trading, LLC | 0.00% | New | 548 | $20K |
| Fifth Third Bancorp | 0.00% | Reduce -33.2% | 423 | $16K |
| Advisors Asset Management, Inc. | 0.00% | Reduce -54.3% | 399 | $15K |
| Signaturefd, LLC | 0.00% | No change | 352 | $13K |
| Truvestments Capital LLC | 0.00% | Add +76.8% | 350 | $13K |
| Covestor Ltd | 0.01% | Reduce -0.3% | 293 | $11K |
| Public Employees Retirement System of Ohio | 0.00% | Add +42.4% | 289 | $11K |
| Harbour Investments, Inc. | 0.00% | No change | 270 | $10K |
| Richardson Financial Services Inc. | 0.01% | Add +1.2% | 246 | $9K |
| Silicon Valley Capital Partners | 0.00% | No change | 229 | $9K |
| Versant Capital Management, Inc | 0.00% | Reduce -17.5% | 221 | $8K |
| Spire Wealth Management | 0.00% | No change | 202 | $8K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -93.5% | 196 | $7K |
| Daiwa Securities Group Inc. | 0.00% | No change | 185 | $7K |
| Global Retirement Partners, LLC | 0.00% | Add +3.5% | 176 | $7K |
| City State Bank | 0.00% | No change | 150 | $6K |
| Anchor Investment Management, LLC | 0.00% | New | 150 | $6K |
| Farther Finance Advisors, LLC | 0.00% | No change | 143 | $5K |
| Clearstead Advisors, LLC | 0.00% | No change | 108 | $4K |
| Canada Pension Plan Investment Board | 0.00% | New | 100 | $4K |
| MassMutual Private Wealth & Trust, FSB | 0.00% | No change | 97 | $4K |
| LGT Financial Advisors LLC | 0.01% | No change | 83 | $3K |
| Eagle Bay Advisors LLC | 0.00% | Reduce -12.8% | 82 | $3K |
| Jones Financial Companies LLLP | 0.00% | Reduce -36.7% | 81 | $3K |
| Capital Advisors, Ltd. LLC | 0.00% | Reduce -9.1% | 90 | $3K |
| Park Square Financial Group, LLC | 0.00% | — | 64 | $2K |
| CoreCap Advisors, LLC | 0.00% | No change | 59 | $2K |
| Lindbrook Capital, LLC | 0.00% | Reduce -15.6% | 54 | $2K |
| UMB Bank, n.a. | 0.00% | Reduce -48.5% | 53 | $2K |
| Private Trust Co. NA | 0.00% | New | 48 | $2K |
| Brooklyn Investment Group | 0.00% | New | 45 | $2K |
| SBI Securities Co., Ltd. | 0.00% | — | 40 | $1K |
| Farmers & Merchants Investments Inc. | 0.00% | No change | 28 | $1K |
| Bell Investment Advisors, Inc | 0.00% | Reduce -27.0% | 27 | $1K |
| Picton Mahoney Asset Management | 0.00% | No change | 24 | $1K |
| Kayne Anderson Rudnick Investment Management LLC | 0.00% | No change | 15 | $557 |
| Creative Planning | 0.00% | New | 13 | $483 |
| Cornerstone Planning Group LLC | 0.00% | New | 13 | $482 |
| Parallel Advisors, LLC | 0.00% | No change | 11 | $408 |
| Rothschild Investment LLC | 0.00% | Reduce -71.4% | 10 | $371 |
| Bruce G. Allen Investments, LLC | 0.00% | New | 9 | $334 |
| Legacy Investment Solutions, LLC | 0.00% | No change | 10 | $324 |
| Legacy Wealth Managment, LLC | 0.00% | No change | 10 | $324 |
| Abound Wealth Management | 0.00% | No change | 4 | $149 |
| JFS Wealth Advisors, LLC | 0.00% | No change | 3 | $112 |
| SJS Investment Consulting Inc. | 0.00% | No change | 1 | $38 |
| EverSource Wealth Advisors, LLC | 0.00% | New | 1 | $37 |
"% of holder's portfolio" is AMPH's weight in each manager's 13F, not the share of Amphastar Pharmaceuticals Inc. the manager owns.