MediaAlpha, Inc. (MAX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

57,334,615Shares Outstanding

18,208,710Shares held by institutions

$133,469,844Value of institutional holdings

82.50%Institutional ownership %

5.52%Shares Changed QoQ

161No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

MediaAlpha, Inc. (NYSE:MAX) currently has 161 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

The percentage of MediaAlpha owned by institutions changed from 83.6% in September 2025 to 82.5% in December 2025, marking a slight down trend.
On a quarter-over-quarter basis, institutional holdings shifted by 5.52%, with a year-over-year no change in the count of filers.
A review of institutional activity for MediaAlpha shows 100 of 161 filers increasing their positions, while 48 reduced their stake, and 13 remained unchanged.
The total number of shares held by institutions in MediaAlpha increased to 47.30Mn as of December 2025, a net change of up by 2.48Mn shares quarter on quarter, and down 760.74K shares year over year.
With 17.86Mn shares, WHITE MOUNTAINS INSURANCE GROUP LTD commands the largest institutional position in MediaAlpha as of December 31, 2025, equating to 31.14% of the company.
Among the most significant buyers of MediaAlpha during December 2025 were Divisadero Street Capital Management, LP (762.10K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (335.45K), JPMORGAN CHASE & CO (309.45K), Triad Investment Management (275.44K), J. Goldman & Co LP (255.34K).
Leading sellers of MediaAlpha stock in December 2025 included MILLENNIUM MANAGEMENT LLC (677.81K), GOLDMAN SACHS GROUP INC (550.59K), Lighthouse Investment Partners, LLC (271.88K), Qube Research & Technologies Ltd (220.33K), Shay Capital LLC (199.10K).
The top 10 institutional holders of MediaAlpha for the quarter ending December 2025 included WHITE MOUNTAINS INSURANCE GROUP LTD (17.86Mn), BlackRock, Inc. (3.55Mn), VANGUARD GROUP INC (2.57Mn), JPMORGAN CHASE & CO (1.37Mn), Clearline Capital LP (1.30Mn), RENAISSANCE TECHNOLOGIES LLC (1.05Mn), MORGAN STANLEY (960.15K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (855.90K), Divisadero Street Capital Management, LP (849.01K), AQR CAPITAL MANAGEMENT LLC (804.10K).

161 Institutional Holders

18,208,710 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
WHITE MOUNTAINS INSURANCE GROUP LTD	31 Dec, 2025	17,856,614	0	0.00%	$231,243,151.00
BlackRock, Inc.	31 Dec, 2025	3,551,465	-21,725	-0.61%	$45,991,471.00
VANGUARD GROUP INC	31 Dec, 2025	2,570,992	-29,629	-1.14%	$33,294,347.00
JPMORGAN CHASE & CO	31 Dec, 2025	1,367,896	309,455	29.24%	$17,714,253.00
Clearline Capital LP	31 Dec, 2025	1,301,453	10,604	0.82%	$16,853,816.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	1,045,400	100,300	10.61%	$13,537,930.00
MORGAN STANLEY	31 Dec, 2025	960,154	88,123	10.11%	$12,433,996.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	855,904	335,452	64.45%	$11,083,957.00
Divisadero Street Capital Management, LP	31 Dec, 2025	849,011	762,104	876.92%	$10,994,692.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	804,095	33,416	4.34%	$10,413,030.00
J. Goldman & Co LP	31 Dec, 2025	786,369	255,342	48.08%	$10,183,479.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	777,304	7,530	0.98%	$10,067,868.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	751,745	-677,811	-47.41%	$9,735,098.00
STATE STREET CORP	31 Dec, 2025	731,407	59,281	8.82%	$9,471,721.00
VICTORY CAPITAL MANAGEMENT INC	31 Dec, 2025	729,457	18,638	2.62%	$9,446,468.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	729,367	-550,593	-43.02%	$9,445,303.00
JACOBS ASSET MANAGEMENT, LLC	31 Dec, 2025	705,299	-113,727	-13.89%	$9,133,622.00
JACOBS LEVY EQUITY MANAGEMENT, INC	31 Dec, 2025	700,497	139,732	24.92%	$9,071,436.00
Nuveen, LLC	31 Dec, 2025	666,539	-23,926	-3.47%	$8,631,680.00
ACADIAN ASSET MANAGEMENT LLC	31 Dec, 2025	606,171	186,332	44.38%	$7,840.00

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