13F

Stock

Amphastar Pharmaceuticals In

Ticker not mapped · held by 213 managers

Reported value

$606.5M

Holders

213

+21 new · −45 exited

Holders’ est. mark

−$185.4M

Price effect on 184 books still in the name

Largest holder

$106.2M

BlackRock, Inc.

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
BlackRock, Inc.5.42M$106.2M−$39MCut−$40.1M
DIMENSIONAL FUND ADVISORS LP2.03M$39.7M−$12.9MCut−$8.47M
State Street1.61M$31.5M−$11MCut−$9.53M
VANGUARD CAPITAL MANAGEMENT LLC1.54M$30.2MHeld
TD Asset Management Inc1.54M$30.2M−$11.1MCut−$22.4M
FULLER & THALER ASSET MANAGEMENT, INC.1.4M$27.3M−$10MCut−$10M
MARSHALL WACE, LLP1.03M$20.1M−$7.37MCut−$13M
AMERICAN CENTURY COMPANIES INC1.02M$19.9M−$4.78MAdded$2.12M
GEODE CAPITAL MANAGEMENT, LLC976.6K$19.1M−$6.38MCut−$4.62M
Boston Trust Walden Corp944.8K$18.5M−$6.79MCut−$10.6M
Epoch Investment Partners, Inc.898.9K$17.6M−$6.46MCut−$12.6M
VANGUARD PORTFOLIO MANAGEMENT LLC787.8K$15.4MHeld
D. E. Shaw & Co., Inc.665.5K$13M−$4.01MCut−$1.88M
Invesco Ltd.604.8K$11.8M−$3.61MCut−$1.58M
Renaissance Technologies553.9K$10.9M−$3.92MCut−$3.74M
SYSTEMATIC FINANCIAL MANAGEMENT LP452.9K$8.87M−$3.13MCut−$2.79M
MORGAN STANLEY420.3K$8.23M−$3.02MCut−$7.61M
UBS Group AG420.3K$8.23M−$1.85MAdded$1.36M
ROYCE & ASSOCIATES LP406.2K$7.96M−$2.53MCut−$1.48M
NORTHERN TRUST CORP372.3K$7.29M−$2.67MCut−$2.65M
MILLENNIUM MANAGEMENT LLC371.4K$7.28M−$2.09MCut−$509K
Bridge City Capital, LLC335.1K$6.56M−$1.69MAdded$258.4K
BRIDGEWAY CAPITAL MANAGEMENT, LLC330.5K$6.47M−$2.33MCut−$2.19M
GOLDMAN SACHS GROUP INC329.4K$6.45M−$2.37MCut−$8.46M
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP325.3K$6.37M−$2.34MCut−$8.61M
CHARLES SCHWAB INVESTMENT MANAGEMENT INC321K$6.29M−$2.31MCut−$3.1M
DENALI ADVISORS LLC266.5K$5.22M−$1.52MCut−$451K
VICTORY CAPITAL MANAGEMENT INC249.6K$4.89M−$1.79MCut−$3.28M
Bank of New York Mellon Corp243.2K$4.76M−$1.75MCut−$2.17M
VANGUARD FIDUCIARY TRUST CO231K$4.53MHeld
PRINCIPAL FINANCIAL GROUP INC209.1K$4.1M−$1.5MCut−$1.74M
RICE HALL JAMES & ASSOCIATES, LLC187.3K$3.67M−$871.3KAdded$425.1K
Empowered Funds, LLC181.3K$3.55M−$1.19MCut−$890.7K
BANK OF AMERICA CORP /DE/174.3K$3.41M−$921.6KCut−$17.5K
VOLORIDGE INVESTMENT MANAGEMENT, LLC171.2K$3.35M−$1.23MCut−$2.84M
BNP PARIBAS FINANCIAL MARKETS156.1K$3.06M−$869.2KCut−$180K
FIRST TRUST ADVISORS LP150.6K$2.95M−$1.01MCut−$807.4K
NEW YORK STATE COMMON RETIREMENT FUND148.7K$2.91M−$905.7KCut−$460K
Universal- Beteiligungs- und Servicegesellschaft mbH139.4K$2.73M−$215.1KAdded$1.95M
FRANKLIN RESOURCES INC139.3K$2.73M−$187.3KAdded$2.03M
TWO SIGMA INVESTMENTS, LP138.1K$2.71M−$709.5KAdded$63.7K
LAM GROUP, INC.130.8K$2.56M−$940.5KCut−$940.5K
PUBLIC SECTOR PENSION INVESTMENT BOARD126.6K$2.48M−$880.8KCut−$801.1K
NORDEA INVESTMENT MANAGEMENT AB123.8K$2.42M−$895.2KCut−$1.04M
O'SHAUGHNESSY ASSET MANAGEMENT, LLC103.9K$2.04M−$626.8KCut−$298.8K
JPMORGAN CHASE & CO104.6K$2.01M−$790.6KCut−$2.24M
JANE STREET GROUP, LLC92.5K$1.81M−$664.9KCut−$4.01M
XTX Topco Ltd87.7K$1.72M−$349.5KAdded$417.1K
RHUMBLINE ADVISERS83.7K$1.64M−$592.4KCut−$566.3K
EXCHANGE TRADED CONCEPTS, LLC82.4K$1.61M−$67.7KAdded$1.36M
Legal & General Group Plc80.9K$1.59M−$581.8KCut−$844.6K
Icahn Capital78.8K$1.54M−$486.4KCut−$268.5K
AMERIPRISE FINANCIAL INC78.8K$1.54M−$566.4KCut−$2.04M
ALLIANCEBERNSTEIN L.P.56.4K$1.51M−$0Cut−$112.5K
Nuveen, LLC76.6K$1.5M−$547.2KCut−$537.5K
Swiss National Bank72.6K$1.42M−$522KCut−$522K
Robeco Institutional Asset Management B.V.66.4K$1.3MNew
Citadel65.5K$1.28M−$471.2KCut−$4.84M
HUSSMAN STRATEGIC ADVISORS, INC.63K$1.23MNew
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC55.4K$1.08M−$397.1KCut−$394.3K
ASSETMARK, INC53.7K$1.05M−$386.4KCut−$403K
PRUDENTIAL FINANCIAL INC50.7K$993.1K−$339.4KCut−$271K
Vanguard Global Advisers, LLC50.2K$982.7KHeld
SteelPeak Wealth, LLC48.5K$949.4K−$348.4KCut−$542.1K
Trexquant Investment LP47.9K$937.7K−$344.2KCut−$2.11M
Polaris Capital Management, LLC43.2K$846.9K−$255.5KCut−$104.6K
WELLS FARGO & COMPANY/MN42K$823.1K−$302.1KCut−$390K
HSBC HOLDINGS PLC38K$753.5KNew
Man Group plc37.3K$730.2K−$101.7KAdded$351.2K
CITIGROUP INC35.9K$703.4K−$203.3KCut−$54K
Legato Capital Management LLC34.1K$668.7K−$191.2KCut−$43.4K
SEGALL BRYANT & HAMILL, LLC33.3K$652.7K−$80.4KAdded$353.2K
DEUTSCHE BANK AG\33.1K$649K−$212.5KCut−$142.5K
SummerHaven Investment Management, LLC32.6K$639.3K−$234.6KCut−$383.7K
Quadrature Capital Ltd30.6K$598.7KNew
Freestone Grove Partners LP29.9K$584.9K−$198.4KCut−$154K
Squarepoint Ops LLC28.3K$555.3K−$106.8KAdded$157.3K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM28.3K$554.4K−$203.5KCut−$404.3K
Illumine Investment Management, LLC28.1K$550K−$201.9KCut−$208.6K
Advisor OS, LLC25.4K$497.7K−$182.7KCut−$182.7K
ADVISORY RESEARCH INC25.3K$496.3K−$109KAdded$90.3K
INTECH INVESTMENT MANAGEMENT LLC24.2K$474.2K−$174KCut−$1.22M
Vident Advisory, LLC23.2K$455.4K−$146.7KCut−$91.2K
VANGUARD ASSET MANAGEMENT, Ltd23.1K$451.6KHeld
BARCLAYS PLC21.3K$416.9K−$153KCut−$1.6M
MetLife Investment Management, LLC20.8K$406.7K−$149.3KCut−$157.7K
Round Rock Advisors LLC20.5K$401.5K−$147.2KCut−$146.9K
Illinois Municipal Retirement Fund19.5K$382.6K−$140.4KCut−$177.5K
RAYMOND JAMES FINANCIAL INC19.1K$373.3K−$137KCut−$1.89M
Verition Fund Management LLC18.6K$364.3KNew
ENVESTNET ASSET MANAGEMENT INC18.3K$357.9K−$131.3KCut−$414K
nVerses Capital, LLC17.7K$346.4KNew
STATE OF WISCONSIN INVESTMENT BOARD17.4K$340.6K−$125KCut−$128.2K
JANUS HENDERSON GROUP PLC16.9K$330.7K−$121.1KCut−$121.1K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.16.8K$330K−$121.1KCut−$122K
Creative Planning16.4K$321.3K−$117.9KCut−$1.06M
CANADA PENSION PLAN INVESTMENT BOARD16.3K$319.3K−$117.2KCut−$478.7K
MANUFACTURERS LIFE INSURANCE COMPANY, THE15.9K$311.1K−$114.2KCut−$128.2K
Louisiana State Employees Retirement System15.7K$307.6K−$112.9KCut−$126.3K
Assenagon Asset Management S.A.15.2K$298.1K−$109.4KCut−$109.4K
SUSQUEHANNA INTERNATIONAL GROUP, LLP14.6K$286K−$58.5KAdded$68.2K
FEDERATED HERMES, INC.14.1K$275.8K−$101.2KCut−$354.5K
Quantedge Capital Pte Ltd13.5K$264.5K−$97.1KCut−$2.19M
HOHIMER WEALTH MANAGEMENT, LLC13.1K$256KNew
OSAIC HOLDINGS, INC.13K$255.4K−$92.4KCut−$88.8K
State of New Jersey Common Pension Fund D12.6K$246.1KNew
MML INVESTORS SERVICES, LLC12.4K$242.3K−$88.9KCut−$150.4K
Brevan Howard Capital Management LP11.6K$227.5K−$83.5KCut−$320.5K
PDT Partners, LLC11.4K$224.1KNew
Magnetar Financial LLC11.2K$220.1KNew
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM10.9K$213.8K−$78.5KCut−$78.5K
PROFUND ADVISORS LLC10.7K$208.8K−$76.6KCut−$89K
Sterling Capital Management LLC10.4K$203.4K−$74.7KCut−$241.2K
Vanguard Personalized Indexing Management, LLC10.3K$201.6K−$74KCut−$78.6K
Police & Firemen's Retirement System of New Jersey10.3K$201.1K−$73.8KCut−$73.8K
ARIZONA STATE RETIREMENT SYSTEM10.1K$197.8K−$72.6KCut−$81.4K
FIFTH THIRD BANCORP8.75K$171.4K−$3.66KAdded$157.8K
State of Tennessee, Department of Treasury8.62K$168.8K−$59.5KCut−$59.5K
Vanguard Investments Australia, Ltd.8.57K$167.8KHeld
China Universal Asset Management Co., Ltd.8.05K$157.7K−$53.8KCut−$42.8K
OREGON PUBLIC EMPLOYEES RETIREMENT FUND8.04K$157.5K−$57.8KCut−$60.5K
KLP KAPITALFORVALTNING AS7.9K$154.8K−$56.8KCut−$56.8K
Zurcher Kantonalbank (Zurich Cantonalbank)7.78K$152.5K−$54KCut−$48.5K
Corient IA LLC6.67K$130.7K−$48KCut−$70.2K
PNC Financial Services Group, Inc.5.45K$106.7K−$39.2KCut−$48.8K
Tower Research Capital LLC (TRC)3.92K$76.8K−$12.8KAdded$28.9K
ROYAL BANK OF CANADA3.52K$68K−$26.3KCut−$180K
Russell Investments Group, Ltd.3.44K$67.5K−$24.8KCut−$32.4K
Ameritas Investment Partners, Inc.3.1K$60.7K−$22.3KCut−$22.3K
TD PRIVATE CLIENT WEALTH LLC2.38K$46.6K−$17.1KCut−$18.1K
Mirae Asset Global Investments Co., Ltd.2.37K$46.4K−$16.1KCut−$13.4K
Blue Trust, Inc.1.61K$31.5K−$8.92KCut−$1.73K
Fidelity1.29K$25.4K−$9.3KCut−$69K
Farther Finance Advisors, LLC1.14K$23K−$7.43KCut−$14K
QUADRANT CAPITAL GROUP LLC1.13K$22.2K−$8.13KCut−$51.1K
GF FUND MANAGEMENT CO. LTD.1.02K$20.1K−$6.49KCut−$4.1K
Vanguard National Trust Co886$17.4KHeld
1620 INVESTMENT ADVISORS, INC.718$14.1K−$5.16KCut−$5.16K
CWM, LLC658$12.9K$12.9KAdded$12.8K
Parallel Advisors, LLC657$12.9K−$489Added$11.1K
LSV ASSET MANAGEMENT651.7K$12.8K−$793Added$9.81K
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO589$11.5K−$3.65KCut−$2.06K
SIGNATUREFD, LLC588$11.5K−$3.9KCut−$3K
BNP PARIBAS ASSET MANAGEMENT Holding S.A.396$7.76K$7.75KAdded$7.66K
MAI Capital Management371$7.27K−$2.57KCut−$2.32K
NISA INVESTMENT ADVISORS, LLC361$7.07K−$2.6KCut−$9.53K
GAMMA Investing LLC339$6.64K−$2.44KCut−$38.5K
US BANCORP \DE\318$6.23K−$2.29KCut−$15.4K
Pinnacle Wealth Planning Services, Inc.283$5.54K−$2.03KCut−$37.7K
JONES FINANCIAL COMPANIES LLLP288$5.47K−$2.24KCut−$8.74K
Smartleaf Asset Management LLC273$5.25K−$2.02KCut−$1.75K
SIMPLEX TRADING, LLC262$5.13KNew
MassMutual Private Wealth & Trust, FSB224$4.39K−$1.61KCut−$16.2K
Versant Capital Management, Inc218$4.27K−$1.57KCut−$5.42K
LOS ANGELES CAPITAL MANAGEMENT LLC217$4.25K−$1.1KCut−$474.1K
GROUP ONE TRADING LLC214$4.19K−$1.54KCut−$42.4K
Bank of New Hampshire206$4.04KNew
Spire Wealth Management206$4.04K−$1.48KCut−$1.67K
UMB Bank, n.a.180$3.53K−$1.29KCut−$3.17K
TWIN PEAKS WEALTH ADVISORS, LLC177$3.47KNew
Parkside Financial Bank & Trust156$3.06K−$1.12KCut−$1.58K
City State Bank150$2.94K−$1.08KCut−$1.08K
Rockefeller Capital Management L.P.124$2.43K−$719Cut−$249
BESSEMER GROUP INC122K$2.39K−$870Cut−$847
Essential Partners LLC121$2.37K−$870Cut−$2.99K
CoreCap Advisors, LLC107$2.1K−$769Cut−$769
MCF Advisors LLC100$1.96KNew
Steward Partners Investment Advisory, LLC100$1.96KNew
Truvestments Capital LLC96$1.88K−$690Cut−$2.24K
Arax Advisory Partners60$1.69K$43Added$801
IFP Advisors, Inc70$1.37K−$504Cut−$24.6K
WealthCollab, LLC64$1.25K−$460Cut−$460
ALGERT GLOBAL LLC62.4K$1.22K−$448Cut−$2.13K
HRT FINANCIAL LP56.2K$1.1KNew
HighMark Wealth Management LLC55$1.08K−$395Cut−$395
Bare Financial Services, Inc46$901New
PRICE T ROWE ASSOCIATES INC /MD/44.9K$880−$265Cut−$106
SBI Securities Co., Ltd.44$862−$310Cut−$290
Allworth Financial LP43$843−$309Cut−$39K
SG Americas Securities, LLC32.8K$643−$235Cut−$1.86K
CANADA LIFE ASSURANCE Co30.2K$593−$216Cut−$216
Optiver Holding B.V.28$549−$201Cut−$1.17K
State of Alaska, Department of Revenue27.4K$536−$197Cut−$211
BROWN, LISLE/CUMMINGS, INC.27$529New
FARMERS & MERCHANTS INVESTMENTS INC25$490−$180Cut−$180
PICTON MAHONEY ASSET MANAGEMENT24$470−$173Cut−$173
EverSource Wealth Advisors, LLC24$470−$173Cut−$1.94K
Sound Income Strategies, LLC23$466New
Thrivent Financial for Lutherans23.6K$463−$169Cut−$188
NEW YORK STATE TEACHERS RETIREMENT SYSTEM21.8K$428−$156Cut−$187
Legacy Wealth Managment, LLC/ID21$412−$151Cut−$1.17K
Larson Financial Group LLC20$392−$144Cut−$20.2K
Trust Co15$294−$108Cut−$108
Torren Management, LLC15$294−$108Cut−$20.1K
Sunbelt Securities, Inc.14$274−$101Cut−$315
Janney Montgomery Scott LLC13.8K$271−$99Cut−$110
NATIXIS ADVISORS, LLC11.5K$225New
Vestcor Inc10.9K$214−$79Cut−$225
AMALGAMATED BANK10.2K$200−$74Cut−$79
Owl Creek Wealth Partners LLC10$196Held
TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY9.05K$178−$64Cut−$64
Elequin Capital, LP7$137−$50Cut−$586
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO5.26K$103−$38Cut−$38
GILPIN WEALTH MANAGEMENT, LLC5$98−$15Added$44
Abound Wealth Management4$79−$29Cut−$29
CX Institutional2.97K$58−$22Cut−$1.66K
HANTZ FINANCIAL SERVICES, INC.2.03K$40−$14Cut−$80
ROTHSCHILD INVESTMENT LLC1$20−$7Cut−$650
Cedar Mountain Advisors, LLC1$20New
HARBOR CAPITAL ADVISORS, INC.391$8−$1Added$1
Capital Advisors, Ltd. LLC170$3$0Added$3
Covestor Ltd37$1−$0Cut−$1
Avion Wealth24$0−$1Cut−$2

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.