MediaAlpha MAX Institutional Ownership

NYSE MAX

$9.37 +0.17 (+1.85%)

As of: Sep 29, 2026 · 3:59 PM EDT

Institutions by Trading Activity

155 Institutions

Increased 70 45.2%

Unchanged 19 12.3%

Reduced 66 42.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

91.03%

▲+3.61 pp QoQ

Shares Held by Institutions

48.93Mn

of 53.75Mn outstanding

▲+2.53% QoQ

Shares Outstanding

53.75Mn

4.82Mn held outside 13F filers

Institutional Investors

155

filed 13F for Jun 2026

▼-6 vs prior quarter

Net Shares Added (QoQ)

+1.21Mn

accumulated since last quarter

Value of Holdings

$450.60Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

MediaAlpha, Inc. (NYSE:MAX) is held by 155 institutional investors per 13F filings through June 2026.

Collectively, these holders controlled 91.0% of MediaAlpha's outstanding shares in June 2026, up from 87.4% in March 2026.
They increased total shares held in MediaAlpha by 2.53% from last quarter, and the number of investors in MAX increased 4.03% annually.
Of these 155 holders, 70 added to their stakes in MediaAlpha, 66 trimmed positions, and 19 made no changes.
Combined, these investors held 48.93Mn shares in MAX for June 2026, up by 1.21Mn shares quarter on quarter, and up 1.8Mn shares year over year.
White Mountains Insurance Group Ltd is the top holder of MediaAlpha as of June 30, 2026, with 17.86Mn shares representing 33.22% of outstanding stock.
The most significant purchases of MAX for the quarter ending June 2026 came from Divisadero Street Capital Management, LP (933.08K), EVR Research LP (440.0K), CITADEL ADVISORS LLC (360.37K), JANE STREET GROUP, LLC (268.62K), Sixth Street Partners Management Company, L.P. (259.22K).
The biggest sellers of MediaAlpha for the quarter ending June 2026 included J. Goldman & Co LP (584.6K), Triad Investment Management (576.24K), Qube Research & Technologies Ltd (322.83K), Franklin Templeton Inc (269.12K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (232.02K).
Per Business Quant data, the top 10 holders of MediaAlpha for the quarter ending June 2026 are White Mountains Insurance Group Ltd (17.86Mn), BlackRock, Inc. (3.39Mn), Clearline Capital LP (2.71Mn), Jpmorgan Chase & Co (1.88Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.28Mn), GEODE CAPITAL MANAGEMENT, LLC (1.07Mn), Divisadero Street Capital Management, LP (1.02Mn), JACOBS LEVY EQUITY MANAGEMENT, INC (971.23K), ACADIAN ASSET MANAGEMENT LLC (957.1K), JACOBS ASSET MANAGEMENT, LLC (919.76K).

Form 13F Holdings

155 Institutional Holders

Report period 30 Jun, 2026

Total shares held 48.93Mn

Of outstanding 91.03%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	White Mountains Insurance Group Ltd	0000776867	17,856,614	33.22%	0	0.00%	$224.46Mn
2	BlackRock, Inc.	0002012383	3,392,357	6.31%	▼84,330	-2.43%	$42.64Mn
3	Clearline Capital LP	0001600136	2,713,890	5.05%	▲123,220	+4.76%	$34.11Mn
4	Jpmorgan Chase & Co	0000019617	1,880,062	3.50%	▲134,383	+7.70%	$23.29Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,276,369	2.37%	▼109,360	-7.89%	$16.04Mn
6	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,068,308	1.99%	▼1,776	-0.17%	$13.43Mn
7	Divisadero Street Capital Management, LP	0001901865	1,019,988	1.90%	▲933,081	+1,073.65%	$12.82Mn
8	JACOBS LEVY EQUITY MANAGEMENT, INC	0000884414	971,232	1.81%	▲221,178	+29.49%	$12.21Mn
9	ACADIAN ASSET MANAGEMENT LLC	0000916542	957,095	1.78%	▲109,896	+12.97%	$12.02K
10	JACOBS ASSET MANAGEMENT, LLC	0001351063	919,761	1.71%	▼4,682	-0.51%	$11.56Mn
11	State Street Corp	0000093751	862,235	1.60%	▲24,074	+2.87%	$10.84Mn
12	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	829,958	1.54%	▼232,023	-21.85%	$10.43Mn
13	Morgan Stanley	0000895421	821,170	1.53%	▲118,152	+16.81%	$10.32Mn
14	Nuveen, LLC	0001871926	752,447	1.40%	▲51,048	+7.28%	$9.46Mn
15	DIMENSIONAL FUND ADVISORS LP	0000354204	701,914	1.31%	▲81,245	+13.09%	$8.82Mn
16	J. Goldman & Co LP	0001412741	598,070	1.11%	▼584,603	-49.43%	$7.52Mn
17	CITADEL ADVISORS LLC	0001423053	589,696	1.10%	▲360,373	+157.15%	$7.41Mn
18	RENAISSANCE TECHNOLOGIES LLC	0001037389	574,407	1.07%	▼144,893	-20.14%	$7.22Mn
19	Shay Capital LLC	0001723643	570,000	1.06%	▼205,000	-26.45%	$7.16Mn
20	JANE STREET GROUP, LLC	0001595888	551,625	1.03%	▲268,617	+94.91%	$6.93Mn

Showing 1 to 20 of 155 holders