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Disclosery

ANNX ANNEXON INC

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COM (common), issuer CIK 1528115

208 managers (217 13F filers) reported a position in ANNX shares at 2026-03-31, 155,947,902 shares in all. 58 filers opened a position and 15 filers sold out during the quarter.

Managers
208
13F filers
217
New
58
Added
87
Reduced
49
Sold out
15
Shares held by filers
155,947,902

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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
Redmile Group, LLCin group Redmile Group, LLC14,549,768$80.6M5.34%+4,499,12413F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.10,938,509$60.6M<0.01%+1,978,07513F-HRTimelineGroup
FMR LLCin group FMR LLC10,635,648$58.9M<0.01%+413,17813F-HRTimelineGroup
BVF INC/ILin group BVF INC/IL8,698,173$48.2M1.54%-429,90713F-HRTimelineGroup
VANGUARD GROUP INCgroup of 7 filers holding8,509,741$47.1M+8,496,840Timeline
STATE STREET CORPin group STATE STREET CORP6,919,255$38.3M<0.01%+2,267,07013F-HRTimelineGroup
Bain Capital Life Sciences Investors, L…in group Bain Capital Life Sciences In…5,212,674$28.9M2.6%-36,39513F-HRTimelineGroup
Bellevue Group AGin group Bellevue Group AG5,157,290$28.6M0.68%013F-HRTimelineGroup
MAK CAPITAL ONE LLC4,724,043$26.2M4.33%+1,765,51613F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…4,300,000$23.8M0.04%-1,200,00013F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/4,259,995$23.6M<0.01%+2,654,41413F-HRTimelineGroup
Nuveen, LLCin group TIAA4,246,330$23.5M0.01%+1,331,00613F-HRTimelineGroup
Siren, L.L.C.in group Siren, L.L.C.3,958,646$21.9M0.61%new13F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management3,886,909$21.5M0.04%+587,65313F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC3,449,121$19.1M<0.01%-899,66113F-HR/ATimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC3,377,823$18.7M<0.01%+474,92713F-HRTimelineGroup
Qube Research & Technologies Ltd3,114,314$17.3M0.02%+732,83513F-HRTimeline
Palo Alto Investors LP2,948,090$16.3M2.5%+563,89813F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY2,735,970$15.2M<0.01%-120,17313F-HRTimelineGroup
GREAT POINT PARTNERS LLC2,500,000$13.8M3.39%new13F-HRTimeline
Woodline Partners LP2,337,137$12.9M0.05%-1,662,93713F-HR/ATimeline
Opaleye Management Inc.2,331,761$12.9M1.7%-268,23913F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC2,152,880$11.9M<0.01%+384,13513F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.1,871,795$10.4M0.02%+1,500,60513F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding1,376,588$7.63M+999,484Timeline
Y-Intercept (Hong Kong) Ltd1,319,913$7.31M0.14%new13F-HRTimeline
Tetragon Partners GP Ltdin group Tetragon Partners GP Ltd1,292,455$7.16M1.41%-740,00013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,238,678$6.86M0.01%-1,598,17913F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,102,445$6.11M<0.01%+45,38513F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,086,902$6.02M<0.01%+294,90213F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP924,078$5.12M<0.01%+205,39813F-HRTimelineGroup
KENNEDY CAPITAL MANAGEMENT LLC912,323$5.05M0.11%+272,42113F-HRTimeline
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…903,368$5M<0.01%-7113F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP861,475$4.77M0.01%+340,47713F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC777,253$4.31M<0.01%+94613F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.763,005$4.23M<0.01%-209,44413F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC758,232$4.2M0.01%-103,01313F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…711,380$3.94M<0.01%+28,36413F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.702,799$3.89M<0.01%-343,42213F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN698,739$3.87M<0.01%+124,99113F-HR/ATimelineGroup
Parkman Healthcare Partners LLC674,013$3.73M0.39%+72,81113F-HRTimeline
Ensign Peak Advisors, Inc625,097$3.46M0.01%new13F-HR/ATimeline
Longaeva Partners L.P.620,401$3.44M0.17%-2,479,59913F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC600,135$3.32M<0.01%+324,84113F-HRTimelineGroup
DEERFIELD MANAGEMENT COMPANY, L.P.in group DEERFIELD MANAGEMENT COMPANY,…583,913$3.23M0.04%013F-HRTimelineGroup
Ikarian Capital, LLCin group Ikarian Capital, LLC580,244$3.21M0.46%+350,00013F-HRTimelineGroup
SIRIOS CAPITAL MANAGEMENT L P575,063$3.19M0.39%-135,19313F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\562,181$3.11M<0.01%+1,43713F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC544,300$3.02M<0.01%-258,30013F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…521,379$2.89M<0.01%+123,30213F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding518,959$2.88M-23,168Timeline
Hennion & Walsh Asset Management, Inc.509,689$2.82M0.1%-25,29713F-HRTimeline
SILVERARC CAPITAL MANAGEMENT, LLCin group SILVERARC CAPITAL MANAGEMENT,…496,461$2.75M0.32%new13F-HRTimelineGroup
Board of Trustees of The Leland Stanfor…482,550$2.67M0.31%013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP471,391$2.61M<0.01%+139,35313F-HRTimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC462,068$2.56M0.01%new13F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/428,720$2.38M<0.01%-16,35413F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…416,698$2.31M0.03%-225,34013F-HRTimelineGroup
Trexquant Investment LP403,657$2.24M0.02%new13F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp395,019$2.19M<0.01%+33,34213F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO323,894$1.61M<0.01%+270,16513F-HR/ATimelineGroup
Cinctive Capital Management LP268,640$1.49M0.1%-90,34613F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS255,371$1.41M<0.01%+193,79913F-HRTimelineGroup
Swiss National Bank236,000$1.31M<0.01%new13F-HRTimeline
Rafferty Asset Management, LLC203,269$1.13M<0.01%+61,62513F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO203,236$1.13M<0.01%+144,97713F-HRTimelineGroup
Rosalind Advisors, Inc.200,000$1.11M0.45%new13F-HRTimeline
IEQ CAPITAL, LLC195,764$1.08M0.01%+12,78213F-HRTimeline
Ishara Investments LP174,250$965K0.97%-575,75013F-HRTimeline
Engineers Gate Manager LP174,141$965K0.01%new13F-HRTimeline
J. Goldman & Co LP170,817$946K0.04%-822,97813F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC166,164$921K0.02%+102,09513F-HRTimeline
RHUMBLINE ADVISERS159,670$885K<0.01%+33,20713F-HRTimeline
ALGERT GLOBAL LLC154,840$858K0.01%new13F-HR/ATimeline
JACOBS LEVY EQUITY MANAGEMENT, INC148,941$825K<0.01%-534,93813F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …134,786$747K<0.01%+4,68413F-HRTimelineGroup
DIADEMA PARTNERS LP132,916$736K0.3%-217,08413F-HRTimeline
Schonfeld Strategic Advisors LLC123,282$683K0.01%-399,56413F-HRTimeline
DAFNA Capital Management LLC117,812$653K0.15%-155,00013F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC115,527$640K<0.01%+100,77013F-HRTimeline
Man Group plcin group Man Group plc109,222$605K<0.01%new13F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.119,050$598K<0.01%-21,69013F-HRTimeline
SCS Capital Management LLC99,000$548K0.01%new13F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC97,800$542K0.01%-40,00013F-HRTimeline
Connor, Clark & Lunn Investment Managem…92,707$514K<0.01%new13F-HRTimeline
PROFUND ADVISORS LLC90,959$504K0.02%+37,95113F-HRTimeline
J. Safra Sarasin Holding AGin group J. Safra Sarasin Holding AG90,487$501K0.01%-27,28113F-HRTimelineGroup
DNB Asset Management ASin group DNB Asset Management AS88,617$491K<0.01%-29,70713F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding83,806$456K+22,010Timeline
XTX Topco Ltdin group XTX Topco Ltd80,495$446K0.01%-162,81813F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc80,046$443K<0.01%+70,73913F-HRTimelineGroup
CAPTRUST FINANCIAL ADVISORS79,173$439K<0.01%+47,58813F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…72,444$401K<0.01%+33,38513F-HRTimelineGroup
POLEN CAPITAL MANAGEMENT LLC70,152$389K<0.01%new13F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC67,956$376K<0.01%new13F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC62,073$344K<0.01%new13F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson59,100$328K<0.01%new13F-HR/ATimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…58,433$324K<0.01%-65,32013F-HRTimelineGroup
AXQ CAPITAL, LP58,185$322K0.04%+29,07713F-HRTimeline
China Universal Asset Management Co., L…57,683$320K0.02%+21,59913F-HRTimeline
STRS OHIO55,500$307K<0.01%new13F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC55,000$305K0.02%+7,00013F-HRTimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…54,866$304K0.08%+1,33913F-HRTimelineGroup
DRW Securities, LLC54,484$302K0.02%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…53,867$298K<0.01%new13F-HRTimeline
Verdad Advisers, LP53,277$295K0.33%new13F-HRTimeline
Mariner, LLCin group Mariner, LLC53,242$295K<0.01%+21,90713F-HRTimelineGroup
EntryPoint Capital, LLC51,421$285K0.08%+8,64713F-HRTimeline
BIT Capital GmbH50,000$277K0.02%new13F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD49,746$276K<0.01%new13F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC47,120$261K<0.01%-466,71613F-HRTimelineGroup
Creative Planningin group Creative Planning45,923$254K<0.01%+21,91913F-HRTimelineGroup
Allegheny Financial Group42,900$238K0.03%013F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD40,800$226K<0.01%+23,20013F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…40,753$226K<0.01%new13F-HRTimelineGroup
CWM, LLCin group CWM, LLC39,652$220K<0.01%+9,35513F-HRTimelineGroup
Police & Firemen's Retirement System of…36,028$200K<0.01%+7,92313F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…35,398$196K<0.01%new13F-HRTimelineGroup
Persistent Asset Partners Ltd33,625$186K0.07%-60,03213F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM32,753$181K<0.01%new13F-HRTimeline
GSA CAPITAL PARTNERS LLP31,694$176K0.01%new13F-HRTimeline
Lido Advisors, LLCin group Lido Advisors, LLC31,000$172K<0.01%-3,95213F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC30,817$171K<0.01%+7,17713F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC29,929$166K<0.01%-12,59513F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND29,568$164K<0.01%013F-HRTimeline
MIRABELLA FINANCIAL SERVICES LLP28,739$159K0.02%new13F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC28,450$158K0.01%new13F-HRTimelineGroup
KLP KAPITALFORVALTNING AS26,300$146K<0.01%new13F-HRTimeline
ProShare Advisors LLC25,595$142K<0.01%+89713F-HRTimeline
E Fund Management Co., Ltd.25,552$142K<0.01%13F-HRTimeline
AlphaCentric Advisors LLC24,518$136K0.14%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC24,291$135K<0.01%-265,67213F-HRTimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd24,100$134K<0.01%-29,30013F-HRTimelineGroup
SBI Securities Co., Ltd.23,225$129K<0.01%+23,20013F-HRTimeline
TD Asset Management Inc22,760$126K<0.01%-24,08813F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC22,227$123K<0.01%+2,90913F-HRTimelineGroup
Cygnus Capital Advisors, LLC22,200$123K0.08%+10,20013F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC22,200$123K0.01%+10,20013F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co21,646$121K<0.01%new13F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…21,932$121K<0.01%+2,37913F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…21,512$119K0.01%+11,49613F-HRTimelineGroup
Quarry LP21,250$118K0.02%-53,75013F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC20,180$112K<0.01%new13F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP19,704$109K<0.01%+1113F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC19,369$107K<0.01%-5,50013F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV18,714$104K<0.01%+8,32813F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC17,979$99.6K<0.01%+3,17813F-HRTimelineGroup
Scientech Research LLC17,316$95.9K0.08%+10013F-HRTimeline
Coastal Bridge Advisors, LLC17,000$94.2K0.01%013F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd16,903$93.6K<0.01%-31,67013F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…16,701$92.5K<0.01%new13F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.17,678$87.7K0.02%new13F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS15,099$83.6K<0.01%new13F-HRTimeline
Balefire, LLC15,000$83.1K0.02%013F-HRTimeline
ExodusPoint Capital Management, LP14,938$82.8K<0.01%new13F-HRTimeline
Vontobel Holding Ltd.in group Vontobel Holding Ltd.14,511$80.4K<0.01%new13F-HRTimelineGroup
Forefront Analytics, LLC14,240$78.9K0.07%+1,01413F-HRTimeline
Magnetar Financial LLCin group Magnetar Financial LLC14,205$78.7K<0.01%new13F-HRTimelineGroup
LPL Financial LLC13,214$73.2K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…12,677$70.2K<0.01%+10,71113F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC12,463$69K<0.01%-238,69513F-HRTimelineGroup
nVerses Capital, LLC11,897$65.9K0.06%new13F-HRTimeline
XPONANCE LLC11,206$62.1K<0.01%new13F-HRTimeline
Abel Hall, LLC10,921$60.5K0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…10,790$59.8K<0.01%+1,10113F-HRTimelineGroup
Merit Financial Group, LLC10,745$59.5K<0.01%new13F-HRTimeline
MOUNT VERNON ASSOCIATES INC /MD/10,500$58K0.04%013F-HRTimeline
Integrated Wealth Concepts LLC10,232$56.7K<0.01%new13F-HRTimeline
Cambridge Investment Research Advisors,…10,110$56K<0.01%-59013F-HRTimeline
Harbor Advisors LLC10,000$55.4K0.01%013F-HRTimeline
Shay Capital LLC10,000$55.4K0.01%new13F-HRTimeline
NISA INVESTMENT ADVISORS, LLC7,413$41.1K<0.01%+4,80013F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…7,173$39.7K<0.01%+1,01013F-HRTimeline
Geneos Wealth Management Inc.6,000$33.2K<0.01%013F-HRTimeline
Sterling Capital Management LLC4,368$24.2K<0.01%-1,59913F-HRTimeline
GF FUND MANAGEMENT CO. LTD.3,234$17.9K<0.01%+39113F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP3,565$17.8K<0.01%+57813F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …2,367$13.1K<0.01%new13F-HRTimelineGroup
Larson Financial Group LLC2,016$11.2K<0.01%+1613F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,662$9.21K<0.01%+1,32813F-HRTimelineGroup
Farther Finance Advisors, LLC1,365$7.32K<0.01%+1,05613F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,269$7.03K<0.01%-146,10613F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1,132$6.27K<0.01%013F-HRTimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.1,122$6.22K<0.01%+59213F-HR/ATimelineGroup
Essential Partners LLC1,092$6.05K<0.01%+513F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA1,160$6K<0.01%-1,69513F-HRTimelineGroup
Allworth Financial LP1,061$5.88K<0.01%+64513F-HRTimeline
Trask Adam Roland1,000$5.54K0.01%13F-HRTimeline
Caitong International Asset Management …835$4.63K<0.01%-18,36213F-HRTimeline
MAI Capital Management795$4.41K<0.01%+73213F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.753$4.17K<0.01%013F-HRTimelineGroup
IFP Advisors, Inc645$3.57K<0.01%+9813F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…591$3.27K<0.01%+5213F-HR/ATimelineGroup
Arax Advisory Partners588$3.26K<0.01%+56913F-HRTimeline
ROTHSCHILD INVESTMENT LLC437$2.42K<0.01%+20113F-HRTimeline
True Wealth Design, LLC322$1.78K<0.01%+11113F-HRTimeline
GAMMA Investing LLC316$1.75K<0.01%new13F-HRTimeline
Quantbot Technologies LP308$1.71K<0.01%new13F-HRTimeline
HighMark Wealth Management LLC300$1.66K<0.01%013F-HRTimeline
Physician Wealth Advisors, Inc.269$1.49K<0.01%013F-HRTimeline