Skip to content
Disclosery

MAX MEDIAALPHA INC

Follow

CL A (common), issuer CIK 1818383

151 managers (153 13F filers) reported a position in MAX shares at 2025-06-30, 48,268,486 shares in all. 29 filers opened a position and 22 filers sold out during the quarter.

Managers
151
13F filers
153
New
29
Added
66
Reduced
44
Sold out
22
Shares held by filers
48,268,486

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

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
Yi Stevendirector, officer (See Remarks)2026-10-09-2,033 S$11.0068Form 4
Yi Stevendirector, officer (See Remarks)2026-10-08-24,000 S$10.0393Form 4

13F holders, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, 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
WHITE MOUNTAINS INSURANCE GROUP LTD17,856,614$196M100%013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.4,003,419$43.8M<0.01%+305,69313F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC2,859,199$31.3M<0.01%-54,12913F-HRTimelineGroup
Broad Bay Capital Management, LP2,498,507$27.4M3.85%-249,27113F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC2,007,186$22M<0.01%+1,270,65513F-HRTimelineGroup
Clearline Capital LP1,425,308$15.6M1.37%-1,229,61313F-HRTimeline
Nuveen, LLCin group TIAA900,790$9.86M<0.01%+394,88313F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.895,348$9.8M0.01%+224,65713F-HRTimelineGroup
JACOBS ASSET MANAGEMENT, LLC798,666$8.75M4.98%+390,25413F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC772,300$8.46M0.01%+206,80013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC764,702$8.37M<0.01%+36,94913F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY755,926$8.28M<0.01%+18,00513F-HRTimelineGroup
Shay Capital LLC670,000$7.34M1.67%+98,15913F-HRTimeline
STATE STREET CORPin group STATE STREET CORP652,838$7.15M<0.01%+29,05113F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding652,450$7.14M+56,735Timeline
JANUS HENDERSON GROUP PLCin group Janus Henderson632,888$6.93M<0.01%+619,02613F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC601,593$6.59M0.01%+43,79713F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO542,246$5.94M<0.01%+233,94813F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC532,437$5.82M0.01%+211,13513F-HRTimelineGroup
Qube Research & Technologies Ltd526,349$5.76M0.01%+56,72413F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …484,342$5.3M<0.01%+188,28813F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC469,561$5.14M0.02%+330,96313F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC389,806$4.27M0.01%new13F-HRTimelineGroup
Hillsdale Investment Management Inc.359,200$3.93M0.15%+144,60013F-HRTimeline
Pacer Advisors, Inc.333,958$3.66M0.01%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co311,591$3.41M<0.01%-9,24813F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP277,927$3.04M<0.01%-7,63313F-HRTimelineGroup
EARNEST PARTNERS LLC269,607$2.95M0.01%-2,82613F-HRTimeline
ALGERT GLOBAL LLC228,778$2.51M0.05%+3,47813F-HR/ATimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/225,789$2.47M<0.01%+11,51913F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC183,063$2M<0.01%-431,47913F-HRTimelineGroup
J. Goldman & Co LP175,000$1.92M0.06%-393,05213F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP165,627$1.81M<0.01%-292,88213F-HRTimelineGroup
PDT Partners, LLC165,540$1.81M0.1%+35,82313F-HRTimeline
Jackson Creek Investment Advisors LLC164,060$1.8M0.48%new13F-HRTimeline
Y-Intercept (Hong Kong) Ltd162,747$1.78M0.04%+136,45913F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS149,933$1.64M0.01%+129,98613F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD125,400$1.37M<0.01%new13F-HRTimeline
Trexquant Investment LP120,775$1.32M0.01%+9,55213F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC119,528$1.31M<0.01%-28,99313F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO116,027$1.27M<0.01%+12,12213F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC115,626$1.27M<0.01%-314,61313F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC113,648$1.24M<0.01%+50,50013F-HR/ATimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding107,994$1.18M-108,102Timeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp95,072$1.04M<0.01%+5,41813F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…92,067$1.01M<0.01%-75,96513F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS87,048$953K<0.01%+47,90113F-HRTimelineGroup
Divisadero Street Capital Management, LPin group Divisadero Street Capital Man…86,907$952K0.06%new13F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD84,739$928K<0.01%new13F-HRTimeline
Janney Montgomery Scott LLC81,723$895K<0.01%new13F-HRTimeline
Allianz Asset Management GmbHin group Allianz SE70,276$770K<0.01%-91,49613F-HRTimelineGroup
Engineers Gate Manager LP69,184$758K0.01%+4,10013F-HRTimeline
TUDOR INVESTMENT CORP ET AL66,206$725K0.01%-1,24113F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP64,108$702K<0.01%new13F-HRTimelineGroup
BLAIR WILLIAM & CO/IL64,007$701K<0.01%-13013F-HRTimeline
Swiss National Bank58,700$643K<0.01%-10,70013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC58,666$642K<0.01%-75,89113F-HR/ATimelineGroup
RHUMBLINE ADVISERS55,622$609K<0.01%+14,23413F-HRTimeline
Amundiin group Amundi57,537$598K<0.01%new13F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…54,176$592K<0.01%+18,23913F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC52,194$572K<0.01%-24,99813F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC51,550$561K<0.01%+1,14413F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC47,481$520K<0.01%-89,30613F-HRTimelineGroup
IEQ CAPITAL, LLC44,578$488K<0.01%+15,36513F-HRTimeline
Verition Fund Management LLC43,188$473K<0.01%-11,17113F-HRTimeline
Graham Capital Management, L.P.41,164$451K0.01%-32,78113F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …39,582$429K<0.01%-2,71613F-HRTimelineGroup
Cannell & Spears LLC39,100$428K0.01%-5,10013F-HRTimeline
NOMURA HOLDINGS INCin group NOMURA ASSET MANAGEMENT CO LTD39,015$427K<0.01%new13F-HR/ATimelineGroup
ALLIANCEBERNSTEIN L.P.38,630$423K<0.01%+10,30013F-HRTimeline
Gotham Asset Management, LLC38,504$422K<0.01%new13F-HRTimeline
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…37,987$416K0.02%-106,05813F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc36,315$398K<0.01%+8,22913F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management36,236$397K<0.01%-50,51813F-HRTimelineGroup
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …34,617$379K<0.01%+17,86813F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…30,346$332K<0.01%013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC28,470$312K<0.01%new13F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.27,238$298K0.05%-20,03113F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\27,014$296K<0.01%-153,67713F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…26,987$296K<0.01%-14,29613F-HRTimeline
Campbell & CO Investment Adviser LLC26,254$287K0.02%+4,58313F-HRTimeline
Nebula Research & Development LLC25,141$275K0.02%-11,96513F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/24,475$269K<0.01%+4,23913F-HRTimeline
Centiva Capital, LP24,529$269K0.02%new13F-HRTimeline
AlphaQuest LLC23,150$253K0.02%-29,00613F-HRTimeline
CWM, LLCin group CWM, LLC22,681$248K<0.01%+6,15813F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…21,402$234K<0.01%013F-HRTimelineGroup
STONERIDGE INVESTMENT PARTNERS LLC21,362$234K0.18%-6,18513F-HRTimeline
Man Group plcin group Man Group plc21,145$232K<0.01%new13F-HRTimelineGroup
Quantbot Technologies LP20,594$226K0.01%-5,40513F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources20,117$220K<0.01%-27,33113F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC20,071$220K<0.01%+3,83613F-HRTimelineGroup
VIRGINIA RETIREMENT SYSTEMS ET Al20,000$219K<0.01%+7,30013F-HRTimeline
GSA CAPITAL PARTNERS LLP19,865$218K0.02%-11,16213F-HRTimeline
Corton Capital Inc.18,865$207K0.24%+1,42513F-HRTimeline
VIRTUS ADVISERS, LLCin group Virtus Investment Advisers, L…18,711$205K0.13%013F-HR/ATimelineGroup
INTECH INVESTMENT MANAGEMENT LLC18,502$203K<0.01%+1,10513F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…18,468$202K<0.01%new13F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…18,241$200K<0.01%+37013F-HRTimelineGroup
Voleon Capital Management LP18,048$198K0.01%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN17,267$189K<0.01%+2,77513F-HRTimelineGroup
Creative Planningin group Creative Planning15,331$168K<0.01%new13F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…14,757$155K<0.01%new13F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd13,985$153K0.01%new13F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC13,867$152K<0.01%-31,20013F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …12,757$140K<0.01%+1,51013F-HRTimelineGroup
Polymer Capital Management (US) LLC12,310$135K0.02%-3,08413F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…11,928$131K<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\10,833$119K<0.01%+6,67313F-HRTimelineGroup
Dynamic Technology Lab Private Ltd10,808$118K0.02%-32,36813F-HRTimeline
Invesco Ltd.in group Invesco Ltd.10,701$117K<0.01%new13F-HRTimelineGroup
MACKENZIE FINANCIAL CORP10,567$116K<0.01%013F-HRTimeline
SG Americas Securities, LLC10,405$114K<0.01%-3,88713F-HRTimeline
Pallas Capital Advisors LLC10,175$111K<0.01%new13F-HRTimeline
Semanteon Capital Management, LP10,025$110K0.17%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA7,521$83K<0.01%-13,97013F-HR/ATimelineGroup
Police & Firemen's Retirement System of…6,822$74.7K<0.01%013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND6,264$68.6K<0.01%-3,60013F-HR/ATimeline
KLP KAPITALFORVALTNING AS5,933$65K<0.01%013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC5,679$62.2K<0.01%new13F-HRTimelineGroup
State of Wyoming5,645$61.8K0.01%+62213F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…5,551$60.8K<0.01%+1,21313F-HRTimelineGroup
Essential Partners LLC5,350$58.6K0.02%13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,026$33.1K<0.01%013F-HRTimelineGroup
Quarry LP2,853$31.2K0.01%+1,34113F-HRTimeline
Covestor Ltd2,700$30K0.02%+9813F-HRTimeline
FMR LLCin group FMR LLC2,548$27.9K<0.01%+55813F-HRTimelineGroup
Brooklyn Investment Group1,603$17.6K<0.01%+10513F-HR/ATimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1,352$14.8K<0.01%+1,11313F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,062$11.6K<0.01%+40813F-HR/ATimelineGroup
Arax Advisory Partners1,036$11.3K<0.01%+95213F-HRTimeline
AMALGAMATED BANK1,031$11K<0.01%013F-HRTimeline
SIMPLEX TRADING, LLC864$9K<0.01%-7,85413F-HRTimeline
Caitong International Asset Management …678$7.42K0.01%+17513F-HRTimeline
Murphy & Mullick Capital Management Corp500$5.47K<0.01%013F-HRTimeline
Allworth Financial LP499$5.46K<0.01%+38213F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …486$5K<0.01%new13F-HRTimelineGroup
True Wealth Design, LLC304$3.33K<0.01%+28213F-HRTimeline
GPS Wealth Strategies Group, LLC300$3.29K<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC193$2.11K<0.01%new13F-HRTimeline
Clearstead Advisors, LLC168$1.84K<0.01%new13F-HRTimeline
IFP Advisors, Inc128$1.6K<0.01%+10213F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…131$1.43K<0.01%+9113F-HRTimelineGroup
GAMMA Investing LLC120$1.31K<0.01%-19713F-HRTimeline
Sterling Capital Management LLC71$777<0.01%+4013F-HR/ATimeline
Parallel Advisors, LLC71$777<0.01%+4813F-HRTimeline
ROTHSCHILD INVESTMENT LLC50$548<0.01%+1513F-HRTimeline
SIGNATUREFD, LLC39$427<0.01%new13F-HRTimeline
Versant Capital Management, Inc32$350<0.01%new13F-HRTimeline
Capital Advisors, Ltd. LLC12$00%new13F-HRTimelineValue filed as zero, left out of ratios.
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.

Events

  • Yi Steven sold 26,033 MAX shares between 2026-10-08 and 2026-10-09, Form 4 filed 2026-10-09. 0001818383-26-000249

    Accepted , ingested