How many institutions held MAX - MediaAlpha, Inc. - Class A Common Stock, par value $0.01 per share in Q1 2025?

144 institutional investors reported MAX - MediaAlpha, Inc. - Class A Common Stock, par value $0.01 per share for Q1 2025. Use the holders table for investor-level position and value details.

MediaAlpha, Inc. - Class A Common Stock, par value $0.01 per share (MAX)

Q: What does CUSIP 58450V104 represent in this 13F holders report?

CUSIP 58450V104 is the security identifier for MAX - MediaAlpha, Inc. - Class A Common Stock, par value $0.01 per share used to aggregate holder disclosures.

CUSIP: 58450V104

Q1 2025 13F Holders as of 31 Mar 2025

Security type / class: Equity / Class A Common Stock, par value $0.01 per share
Total 13F shares: 47,216,825
Total 13F value: $436,277,189
Share change: -734,280
Put/Call ratio: 36%
SEC-reported price per share: $9.24
Number of holders: 144
Value change: -$13,260,709
Number of buys: 78
Number of sells: 78
Shares outstanding: 53,042,051

Security key

58450V104

Report period

Q1 2025

Institutions

144

Top holders

MAX full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 MediaAlpha, Inc. SEC filings MediaAlpha, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 58450V104

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of MAX - MediaAlpha, Inc. - Class A Common Stock, par value $0.01 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BlackRock, Inc.

Disclosed value leader

WHITE MOUNTAINS INSURANCE...

Comparable rows

15/15

Latest evidence

31 Dec 2024

13F 13D/G 3/4/5 Lead comparable stake: 4.2% 13D/G row: BlackRock, Inc. Showing 1-6 of 15 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 4.2%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BlackRock, Inc.'s linked filing trail.

Comparable ownership Top 5

BlackRock, Inc. 4.2%

WHITE MOUNTAINS INSURANCE GROUP LTD 34%

VANGUARD GROUP INC 6.8%

Broad Bay Capital Management, LP 4.2%

TimesSquare Capital Management, LLC 3.1%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	4.2% from 13D/G	$40,159,083 3,557,049 shares	—	31 Dec 2024
WHITE MOUNTAINS INSURANCE GROUP LTD	3/4/5 13F 10%+ Owner · Company 3/4/5 13F	34% from 13F	$339,275,666 17,856,614 shares	—	07 May 2024
VANGUARD GROUP INC	13F Company 13F	6.8%	$40,907,554 3,623,344 shares	—	31 Dec 2024
Broad Bay Capital Management, LP	13F Company 13F	4.2%	$25,048,954 2,218,685 shares	—	31 Dec 2024
TimesSquare Capital Management, LLC	13F Company 13F	3.1%	$18,389,321 1,628,815 shares	—	31 Dec 2024
Clearline Capital LP	13F Company 13F	2.2%	$13,414,338 1,188,161 shares	—	31 Dec 2024

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

144

47,216,825

Rows available

144

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2025 vs Q1 2025 Across Filers

Q1 2025 holders

144

Q1 2025 holders

144

Holder diff

Investor	Q1 2025 Shares	Q1 2025 Shares	Share Diff	Share Chg %	Q1 2025 value	Q1 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend