Security key
58450V104
MediaAlpha, Inc. - Class A Common Stock, par value $0.01 per share (MAX)
CUSIP: 58450V104
Q4 2024 13F Holders as of 31 Dec 2024
- Security type / class
- Equity / Class A Common Stock, par value $0.01 per share
- Total 13F shares
- 48,012,860
- Total 13F value
- $542,040,862
- Share change
- -968,391
- Put/Call ratio
- 20%
- SEC-reported price per share
- $11.29
- Number of holders
- 160
- Value change
- -$30,038,335
- Number of buys
- 90
- Number of sells
- 69
- Shares outstanding
- 54,061,804
Holder snapshot
7 signals
Show 1 more signal
Security identity
1 source field
Report period
Q4 2024
Institutions
160
Top holders
10
MAX full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2025
Previous quarter: Q3 2024
MediaAlpha, Inc. SEC filings
MediaAlpha, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 58450V104
Recent filing periods:
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
WHITE MOUNTAINS INSURANCE...
Disclosed value leader
WHITE MOUNTAINS INSURANCE...
Comparable rows
15/15
Latest evidence
30 Sep 2024
3/4/5
13F
Lead comparable stake: 33%
Showing 1-6 of 15 holder rows.
Quick read
WHITE MOUNTAINS INSURANCE GROUP LTD leads the comparable SEC ownership view at 33%.
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.
Comparable ownership
Top 5
WHITE MOUNTAINS INSURANCE GROUP LTD
33%
BlackRock, Inc.
7%
VANGUARD GROUP INC
6.4%
Broad Bay Capital Management, LP
4.6%
DRIEHAUS CAPITAL MANAGEMENT LLC
4.2%
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 |
|---|---|---|---|---|---|
| WHITE MOUNTAINS INSURANCE GROUP LTD |
3/4/5
13F
10%+ Owner · Company
|
33%
from 13F
|
$339,275,666
17,856,614 shares
|
— | 07 May 2024 |
| BlackRock, Inc. |
13F
Company
|
7%
|
$68,244,202
3,768,316 shares
|
— | 30 Sep 2024 |
| VANGUARD GROUP INC |
13F
Company
|
6.4%
|
$62,546,326
3,453,690 shares
|
— | 30 Sep 2024 |
| Broad Bay Capital Management, LP |
13F
Company
|
4.6%
|
$44,685,809
2,467,466 shares
|
— | 30 Sep 2024 |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
Company
|
4.2%
|
$40,700,323
2,247,395 shares
|
— | 30 Sep 2024 |
| Clearline Capital LP |
13F
Company
|
2.3%
|
$22,482,098
1,241,419 shares
|
— | 30 Sep 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 Q4 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
160
Shares
48,012,860
Rows available
160
| 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 Q4 2024 vs Q3 2024 Across Filers
Q3 2024 holders
149
Q4 2024 holders
160
Holder diff
11
| Investor | Q3 2024 Shares | Q4 2024 Shares | Share Diff | Share Chg % | Q3 2024 value | Q4 2024 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend