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Disclosery

AMPH AMPHASTAR PHARMACEUTICALS IN

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COM (common), issuer CIK 1297184

258 managers (264 13F filers) reported a position in AMPH shares at 2024-12-31, 35,165,514 shares in all. 28 filers opened a position and 50 filers sold out during the quarter.

Managers
258
13F filers
264
New
28
Added
84
Reduced
100
Sold out
50
Shares held by filers
35,165,514

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2024

Filers in the available 13F reports with a share position at 2024-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.6,117,822$227M<0.01%+85,10013F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC2,714,628$101M<0.01%+3,15513F-HRTimelineGroup
TD Asset Management Inc1,840,286$68.3M0.06%-294,75213F-HRTimeline
STATE STREET CORPin group STATE STREET CORP1,596,110$59.3M<0.01%+65,64613F-HRTimelineGroup
Boston Trust Walden Corpgroup of 2 filers holding1,405,556$52.1M+865,917Timeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC1,374,125$51M0.04%-240,96313F-HRTimelineGroup
Pacer Advisors, Inc.1,350,368$50.1M0.11%+1,347,77513F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,198,590$44.5M0.01%+105,28813F-HRTimelineGroup
FULLER & THALER ASSET MANAGEMENT, INC.1,132,926$42.1M0.16%-127,84113F-HRTimeline
Epoch Investment Partners, Inc.1,101,273$40.9M0.2%-89,83713F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC916,081$34M<0.01%-4,28213F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.823,487$30.6M0.07%-1,123,61313F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY632,074$23.5M<0.01%-45,55213F-HR/ATimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP613,170$22.8M<0.01%+29,80813F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP608,706$22.6M0.03%+40,21213F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/566,656$21M<0.01%-2,23813F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC525,500$19.5M0.03%+36,10013F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC488,630$18.1M0.03%+11,60913F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC472,017$17.5M0.01%-167,57513F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC427,835$15.9M<0.01%-21,55413F-HRTimelineGroup
Granite Investment Partners, LLC396,702$14.7M0.64%-9,01613F-HRTimeline
Mesirow Institutional Investment Manage…380,389$14.1M1.09%-33,56013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co347,512$12.9M<0.01%-2,54413F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.298,864$11.1M<0.01%-34,06113F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp285,863$10.6M<0.01%+32,11213F-HRTimelineGroup
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …279,714$10.4M0.01%+12,85113F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC256,556$9.53M0.01%-3,09413F-HRTimelineGroup
SYSTEMATIC FINANCIAL MANAGEMENT LP246,348$9.15M0.23%new13F-HRTimeline
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC237,520$8.82M0.03%+14,90013F-HRTimeline
UBS Group AGgroup of 2 filers holding236,973$8.8M+59,496Timeline
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding208,761$7.75M+5,777Timeline
JANUS HENDERSON GROUP PLCin group Janus Henderson189,347$7.03M<0.01%+42,30213F-HRTimelineGroup
OBERWEIS ASSET MANAGEMENT INC/184,595$6.85M0.32%+23,44013F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding184,084$6.84M-13,014Timeline
SILVERCREST ASSET MANAGEMENT GROUP LLC166,814$6.19M0.04%-1,65813F-HRTimeline
Assenagon Asset Management S.A.161,399$5.99M0.01%-5,95613F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO153,571$5.7M<0.01%+79,65113F-HRTimelineGroup
Clark Capital Management Group, Inc.148,075$5.5M0.04%-5,67213F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC146,015$5.42M<0.01%+1,41713F-HRTimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC143,436$5.33M0.02%+19,99113F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC140,413$5.21M<0.01%+5,17613F-HRTimelineGroup
Portolan Capital Management, LLCin group Portolan Capital Management, …131,123$4.87M0.33%-196,64113F-HRTimelineGroup
LAM GROUP, INC.130,800$4.86M3.46%013F-HRTimeline
FRONTIER CAPITAL MANAGEMENT CO LLC123,360$4.58M0.04%-25913F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.118,851$4.41M<0.01%+95,19213F-HRTimelineGroup
Qube Research & Technologies Ltd115,292$4.28M0.01%-1,38613F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/112,094$4.16M<0.01%-46,03713F-HRTimelineGroup
Trexquant Investment LP105,528$3.92M0.05%+16,24813F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc103,741$3.85M<0.01%-58213F-HRTimelineGroup
RENAISSANCE GROUP LLC99,572$3.7M0.15%+29,69613F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC99,487$3.69M0.01%+35,87313F-HRTimelineGroup
Nuveen Asset Management, LLCin group TIAA95,665$3.55M<0.01%-112,30713F-HRTimelineGroup
Public Sector Pension Investment Board93,430$3.47M0.01%+12,84313F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC92,904$3.45M<0.01%13F-HR/ATimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…92,251$3.43M0.04%-10613F-HRTimelineGroup
PDT Partners, LLC90,484$3.36M0.3%+9,30013F-HRTimeline
RHUMBLINE ADVISERS87,327$3.24M<0.01%+1,21313F-HR/ATimeline
BARCLAYS PLCin group BARCLAYS PLC84,790$3.15M<0.01%+10,33413F-HR/ATimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP81,129$3.01M<0.01%+63,10013F-HRTimelineGroup
Swiss National Bank76,400$2.84M<0.01%013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND70,490$2.62M<0.01%013F-HR/ATimeline
Bridge City Capital, LLC70,095$2.6M0.69%-98413F-HRTimeline
Connor, Clark & Lunn Investment Managem…67,367$2.5M0.01%-16,30613F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC63,387$2.35M<0.01%-155,14413F-HRTimeline
CITIGROUP INCin group CITIGROUP INC63,171$2.35M<0.01%+5,35913F-HRTimelineGroup
Aurora Investment Counsel54,705$2.03M1.11%+713F-HRTimeline
ALLIANCEBERNSTEIN L.P.50,630$1.88M<0.01%+88913F-HRTimeline
Campbell & CO Investment Adviser LLC47,566$1.77M0.14%new13F-HRTimeline
TWINBEECH CAPITAL LP46,797$1.74M0.03%new13F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC38,694$1.73M<0.01%-63013F-HRTimelineGroup
ARISTEIA CAPITAL, L.L.C.43,235$1.61M0.06%new13F-HRTimeline
Schonfeld Strategic Advisors LLC42,614$1.58M0.01%+33,00713F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC42,156$1.57M0.02%+29,16713F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC41,921$1.56M<0.01%-1,98513F-HRTimelineGroup
MARTINGALE ASSET MANAGEMENT L P40,205$1.49M0.04%-6013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS36,964$1.37M<0.01%-57,50213F-HRTimelineGroup
LSV ASSET MANAGEMENT36,400$1.35M<0.01%-44,00013F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…36,369$1.35M<0.01%-59513F-HR/ATimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co35,045$1.3M<0.01%-1,90213F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\34,082$1.27M<0.01%+10,83913F-HR/ATimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC32,203$1.2M<0.01%-2,46313F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…31,266$1.16M<0.01%+16,48313F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC29,471$1.09M<0.01%-12,19613F-HRTimelineGroup
Engineers Gate Manager LP29,108$1.08M0.02%+2,65813F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…28,988$1.08M<0.01%-82713F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA28,632$1.06M<0.01%+2,11813F-HRTimelineGroup
Gotham Asset Management, LLC28,448$1.06M0.01%-7,29013F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO28,125$1.04M<0.01%-13,10313F-HRTimelineGroup
Arkadios Wealth Advisors27,964$1.04M0.06%+1,37913F-HRTimeline
Franklin Resourcesgroup of 2 filers holding27,405$1.02M-76,113Timeline
CHATHAM CAPITAL GROUP, INC.27,295$1.01M0.17%-39513F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD25,649$952K<0.01%-33,58213F-HRTimeline
Quantbot Technologies LP25,454$945K0.03%new13F-HRTimeline
Advisor OS, LLCin group Advisor OS, LLC25,405$943K0.11%-62813F-HRTimelineGroup
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA24,743$919K<0.01%-13,14113F-HRTimelineGroup
Polaris Capital Management, LLC24,500$910K0.04%new13F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…23,866$886K<0.01%013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN23,552$874K<0.01%-19,13613F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding23,478$873K+633Timeline
MetLife Investment Management, LLCin group MetLife Investment Management…23,452$871K<0.01%+84513F-HRTimelineGroup
Man Group plcin group Man Group plc21,825$810K<0.01%new13F-HRTimelineGroup
Redwood Investments, LLC21,459$797K0.21%-2713F-HRTimeline
FMR LLCin group FMR LLC21,345$793K<0.01%-12,99013F-HRTimelineGroup
State of Alaska, Department of Revenue21,325$791K0.01%-34213F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …21,257$789K<0.01%-61013F-HRTimelineGroup
Illinois Municipal Retirement Fund20,959$778K0.01%-43113F-HRTimeline
DekaBank Deutsche Girozentrale20,848$772K<0.01%013F-HRTimeline
Corebridge Financial, Inc.in group Corebridge Financial, Inc.20,449$759K<0.01%-1,61313F-HRTimelineGroup
LPL Financial LLC20,366$756K<0.01%+1,51013F-HRTimeline
Amundiin group Amundi19,583$717K<0.01%+12,89913F-HRTimelineGroup
Dynamic Technology Lab Private Ltd19,150$711K0.11%+14,46813F-HRTimeline
SEGALL BRYANT & HAMILL, LLC18,881$701K0.01%-8713F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.18,526$688K0.12%new13F-HRTimeline
SHAKER INVESTMENTS LLC/OH18,520$688K0.29%-1613F-HRTimeline
Legato Capital Management LLC18,461$685K0.09%013F-HRTimeline
Louisiana State Employees Retirement Sy…18,100$672K0.01%-30013F-HRTimeline
Jain Global LLC17,974$667K0.02%13F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…17,784$660K<0.01%-1,93913F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC17,664$656K<0.01%+11,92913F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP17,434$647K0.05%+11,18513F-HRTimeline
Illumine Investment Management, LLC17,049$633K0.52%13F-HRTimeline
State of Tennessee, Department of Treas…16,792$623K<0.01%-3,05813F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC16,785$623K<0.01%-42213F-HR/ATimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.16,200$602K<0.01%-19,26313F-HR/ATimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP15,381$571K<0.01%+3413F-HRTimelineGroup
Handelsbanken Fonder AB14,400$535K<0.01%-2,50013F-HRTimeline
ADVISORY RESEARCH INC13,853$514K0.09%+4313F-HRTimeline
ProShare Advisors LLC13,852$514K<0.01%+2,95813F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …14,064$511K<0.01%-10,19913F-HRTimelineGroup
EntryPoint Capital, LLC13,658$507K0.21%+4,34813F-HRTimeline
Maryland State Retirement & Pension Sys…12,630$469K0.01%-19113F-HRTimeline
Cambridge Investment Research Advisors,…12,096$449K<0.01%+18113F-HRTimeline
COMERICA BANK11,805$438K<0.01%-1,10113F-HR/ATimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…11,691$434K<0.01%013F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS11,548$429K<0.01%+1,73613F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC11,346$421K<0.01%-41013F-HRTimeline
Invst, LLC11,346$421K0.05%-3,04413F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM11,304$420K<0.01%+3913F-HRTimeline
D.A. DAVIDSON & CO.11,244$417K<0.01%new13F-HRTimeline
AMALGAMATED BANK10,998$408K<0.01%-27813F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…10,913$405K<0.01%013F-HRTimeline
China Universal Asset Management Co., L…10,195$379K0.04%+83313F-HRTimeline
CIM, LLC10,078$374K0.05%+12613F-HRTimeline
Centiva Capital, LP9,803$364K0.01%+3,33813F-HRTimeline
Sanctuary Advisors, LLC9,983$363K<0.01%-25713F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC9,694$360K<0.01%-42713F-HRTimelineGroup
Vestcor Inc9,383$348K0.01%013F-HRTimeline
Sterling Capital Management LLC9,319$346K<0.01%013F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.9,200$342K<0.01%-29,61713F-HRTimelineGroup
ROYCE & ASSOCIATES LP8,902$331K<0.01%-17413F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC8,991$330K<0.01%+1,70713F-HRTimelineGroup
OREGON PUBLIC EMPLOYEES RETIREMENT FUND8,842$328K0.01%-10013F-HRTimeline
Cornerstone Investment Partners, LLC8,730$324K0.02%+513F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC8,666$322K<0.01%new13F-HRTimelineGroup
Police & Firemen's Retirement System of…8,288$308K<0.01%13F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/8,215$305K<0.01%+36113F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…8,006$297K<0.01%-10913F-HRTimeline
Hennion & Walsh Asset Management, Inc.7,939$295K0.01%-9313F-HRTimeline
PROFUND ADVISORS LLC7,920$294K0.01%-3613F-HRTimeline
Trek Financial, LLC7,638$284K0.02%+1,02113F-HRTimeline
Cynosure Group, LLC7,618$283K0.04%+19213F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…7,504$279K<0.01%+1,26013F-HRTimeline
HOHIMER WEALTH MANAGEMENT, LLC7,485$278K0.05%+49113F-HRTimeline
KLP KAPITALFORVALTNING AS7,400$275K<0.01%13F-HRTimeline
ALPS ADVISORS INCin group ALPS ADVISORS INC7,395$275K<0.01%013F-HRTimelineGroup
Virtus Investment Advisers, LLCgroup of 2 filers holding7,329$272K+42Timeline
Significant Wealth Partners LLC7,135$265K0.14%new13F-HRTimeline
Aquatic Capital Management LLC7,036$261K0.01%new13F-HRTimeline
TIEMANN INVESTMENT ADVISORS, LLC6,962$258K0.11%new13F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…6,905$256K0.01%new13F-HRTimelineGroup
Allianz Asset Management GmbHin group Allianz SE6,700$249K<0.01%013F-HRTimelineGroup
AXQ CAPITAL, LP6,621$246K0.11%new13F-HRTimeline
Yorktown Management & Research Co Inc6,600$245K0.24%new13F-HRTimeline
Verition Fund Management LLC6,338$235K<0.01%+1,17613F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP5,661$210K<0.01%-6413F-HRTimelineGroup
Dakota Wealth Management5,486$204K<0.01%+1,32213F-HRTimeline
CORNERCAP INVESTMENT COUNSEL INC5,421$201K0.06%013F-HRTimeline
Alan B Lancz & Associates, Inc.5,400$201K0.2%013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…5,265$195K<0.01%013F-HRTimeline
OAKWORTH CAPITAL, INC.5,023$187K0.01%013F-HRTimeline
AlphaQuest LLC4,862$181K0.02%-2,72413F-HRTimeline
SHELL ASSET MANAGEMENT CO4,834$179K0.01%-1613F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…4,203$156K<0.01%+1,99213F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,762$140K<0.01%013F-HRTimelineGroup
Mendota Financial Group, LLC3,426$127K0.08%-1,08113F-HRTimeline
EMC Capital Management3,113$116K0.07%013F-HRTimeline
Aster Capital Management (DIFC) Ltd2,869$107K0.04%new13F-HRTimeline
1620 INVESTMENT ADVISORS, INC.2,288$85K0.06%-7913F-HRTimeline
KBC Group NVin group KBC Group NV2,159$80K<0.01%+65013F-HRTimelineGroup
TD PRIVATE CLIENT WEALTH LLC2,099$77.9K<0.01%+38813F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC1,630$60K<0.01%-5,77113F-HRTimelineGroup
Allworth Financial LP1,426$51.5K<0.01%013F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK1,340$49.8K<0.01%+36113F-HRTimelineGroup
Asset Management One Co., Ltd.1,297$49K<0.01%-31213F-HRTimeline
Pinnacle Financial Partners Inc1,000$48.5K<0.01%013F-HRTimeline
Blue Trust, Inc.1,216$45.1K<0.01%-26913F-HR/ATimeline
CWM, LLCin group CWM, LLC1,154$43K<0.01%+15813F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,145$42.5K<0.01%+34813F-HRTimelineGroup
CONCOURSE FINANCIAL GROUP SECURITIES, I…1,063$38.4K<0.01%+10413F-HRTimeline
GF FUND MANAGEMENT CO. LTD.1,010$37.5K<0.01%13F-HRTimeline