MediaAlpha MAX Institutional Ownership

NYSE MAX

$12.66 -0.19 (-1.48%)

As of: Aug 31, 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%

▲+3.54 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

$628.69Mn

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) has 158 institutional investors that have filed 13F reports for the period ending March 2026.

Their combined ownership stood at 87.4% of outstanding shares in March 2026, up from 86.1% in December 2025.
They increased total shares held in MAX by 11.78% quarter over quarter, and investors in MediaAlpha increased 9.72% from a year ago.
Among the 158 funds, 92 bought more MediaAlpha shares, 52 sold down, and 14 held their ground.
In total, institutional investors held 48.83Mn shares in MediaAlpha as of March 2026, up by 5.15Mn shares quarter on quarter, and down 668.89K shares year over year.
White Mountains Insurance Group Ltd holds the largest position in MAX at 17.86Mn shares as of March 31, 2026, or 31.97% of shares outstanding.
Leading buyers of MediaAlpha shares for the quarter ending March 2026 were VANGUARD CAPITAL MANAGEMENT LLC (1.39Mn), Clearline Capital LP (1.29Mn), Triad Investment Management (669.54K), VANGUARD PORTFOLIO MANAGEMENT LLC (546.74K), SPEECE THORSON CAPITAL GROUP INC (499.01K).
Top sellers of MAX stock for the quarter ending March 2026 included Goldman Sachs Group Inc (835.31K), Divisadero Street Capital Management, LP (762.1K), MILLENNIUM MANAGEMENT LLC (704.7K), VICTORY CAPITAL MANAGEMENT INC (642.19K), RENAISSANCE TECHNOLOGIES LLC (326.1K).
Per Business Quant data, the top 10 holders of MediaAlpha for the quarter ending March 2026 are White Mountains Insurance Group Ltd (17.86Mn), BlackRock, Inc. (3.48Mn), Clearline Capital LP (2.59Mn), Jpmorgan Chase & Co (1.75Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.39Mn), J. Goldman & Co LP (1.18Mn), GEODE CAPITAL MANAGEMENT, LLC (1.07Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.06Mn), Triad Investment Management (944.97K), JACOBS ASSET MANAGEMENT, LLC (924.44K).

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