Security key
58450V104
MediaAlpha, Inc. - Class A Common Stock, $0.01 par value per share (MAX)
CUSIP: 58450V104
Q1 2024 13F Holders as of 31 Mar 2024
- Security type / class
- Equity / Class A Common Stock, $0.01 par value per share
- Total 13F shares
- 44,465,137
- Total 13F value
- $905,749,037
- Share change
- +2,413,211
- Put/Call ratio
- 32%
- SEC-reported price per share
- $20.37
- Number of holders
- 121
- Value change
- +$50,675,474
- Number of buys
- 77
- Number of sells
- 41
- Shares outstanding
- 53,948,069
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2024
Institutions
121
Top holders
10
MAX full security history
Ownership snapshot
Full 13F holder table
MediaAlpha, Inc. SEC filings
MediaAlpha, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of MAX - MediaAlpha, Inc. - Class A Common Stock, $0.01 par value 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
31 Dec 2023
13F
Lead comparable stake: 42%
Showing 1-6 of 15 holder rows.
Quick read
WHITE MOUNTAINS INSURANCE GROUP LTD leads the comparable SEC ownership view at 42%.
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 WHITE MOUNTAINS INSURANCE GROUP LTD's linked filing trail.
Comparable ownership
Top 5
WHITE MOUNTAINS INSURANCE GROUP LTD
42%
KAYNE ANDERSON RUDNICK INVESTMENT...
10%
Broad Bay Capital Management, LP
4.3%
VANGUARD GROUP INC
3.4%
BlackRock Finance, Inc.
3.2%
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 |
13F
Company
|
42%
|
$254,853,476
22,856,814 shares
|
— | 31 Dec 2023 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC |
13F
Company
|
10%
|
$61,161,017
5,485,293 shares
|
— | 31 Dec 2023 |
| Broad Bay Capital Management, LP |
13F
Company
|
4.3%
|
$25,856,449
2,318,964 shares
|
— | 31 Dec 2023 |
| VANGUARD GROUP INC |
13F
Company
|
3.4%
|
$20,544,410
1,842,548 shares
|
— | 31 Dec 2023 |
| BlackRock Finance, Inc. |
13F
Company
|
3.2%
|
$19,202,697
1,722,215 shares
|
— | 31 Dec 2023 |
| Ararat Capital Management LP |
13F
Company
|
2.1%
|
$12,791,793
1,147,246 shares
|
— | 31 Dec 2023 |
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 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
121
Shares
44,465,137
Rows available
121
| 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 2024 vs Q1 2024 Across Filers
Q1 2024 holders
121
Q1 2024 holders
121
Holder diff
0
| Investor | Q1 2024 Shares | Q1 2024 Shares | Share Diff | Share Chg % | Q1 2024 value | Q1 2024 value | Value change | Value Chg % |
|---|