Stock Ownership/MAX

MEDIAALPHA INC (MAX): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in MAX · Communication Services. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
17
13F filers
Aggregate Value
$52.1M
Across holders
Last Price
$12.80
2026-08-24
Sector
Communication Services
GICS
Quarterly fund activity9 increased7 reduced1 exited
Full exits: Schonfeld Strategic Advisors LLC
Institutional Holders of MAX
↗
17 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund830K$10.4M20.0%0.0%Reduced$-2.9MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund590K$7.4M14.2%0.0%Added+$4.5MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund574K$7.2M13.9%0.0%Reduced$-1.8MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund536K$6.7M12.9%0.0%Added+$2.4MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund409K$5.1M9.9%0.0%Added+$2.9MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund392K$4.9M9.5%0.0%Reduced+$4.9MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund234K$2.9M5.7%0.0%Added+$235KQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund157K$2.0M3.8%0.0%Added+$252KQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund101K$1.3M2.4%0.0%Reduced$-98KQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund92K$1.2M2.2%0.0%Reduced$-4.1MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPReduced
Hedge Fund
$10.4M· 20.0% of total· 0.0% port· 830K sh· $-2.9M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$7.4M· 14.2% of total· 0.0% port· 590K sh· +$4.5M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$7.2M· 13.9% of total· 0.0% port· 574K sh· $-1.8M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$6.7M· 12.9% of total· 0.0% port· 536K sh· +$2.4M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$5.1M· 9.9% of total· 0.0% port· 409K sh· +$2.9M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$4.9M· 9.5% of total· 0.0% port· 392K sh· +$4.9M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$2.9M· 5.7% of total· 0.0% port· 234K sh· +$235K QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$2.0M· 3.8% of total· 0.0% port· 157K sh· +$252K QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCReduced
Hedge Fund
$1.3M· 2.4% of total· 0.0% port· 101K sh· $-98K QoQ· Q2 2026
Qube Research & Technologies LtdReduced
Hedge Fund
$1.2M· 2.2% of total· 0.0% port· 92K sh· $-4.1M QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$1.0M· 1.9% of total· 0.0% port· 80K sh· — QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$466K· 0.9% of total· 0.0% port· 37K sh· $-125K QoQ· Q2 2026
Lighthouse Investment Partners, LLCAdded
Hedge Fund
$427K· 0.8% of total· 0.0% port· 34K sh· — QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$341K· 0.7% of total· 0.0% port· 27K sh· — QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$324K· 0.6% of total· 0.0% port· 26K sh· — QoQ· Q2 2026
JUPITER ASSET MANAGEMENT LTDUnchanged
Hedge Fund
$266K· 0.5% of total· 0.0% port· 21K sh· +$0 QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$9K· 0.0% of total· 0.0% port· 684 sh· +$8K QoQ· Q2 2026
1–10 of 17
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