Security key
58450V104
MediaAlpha, Inc. - Class A Common Stock, par value $0.01 per share (MAX)
CUSIP: 58450V104
Q4 2021 13F Holders as of 31 Dec 2021
- Security type / class
- Equity / Class A Common Stock, par value $0.01 per share
- Total 13F shares
- 39,939,473
- Total 13F value
- $616,578,624
- Share change
- +2,014,310
- SEC-reported price per share
- $15.44
- Number of holders
- 90
- Value change
- +$24,793,185
- Number of buys
- 46
- Number of sells
- 47
- Shares outstanding
- 54,061,804
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2021
Institutions
90
Top holders
10
MAX full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2022
Previous quarter: Q3 2021
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 2021
13F
Lead comparable stake: 31%
Showing 1-6 of 15 holder rows.
Quick read
WHITE MOUNTAINS INSURANCE GROUP LTD leads the comparable SEC ownership view at 31%.
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
31%
KAYNE ANDERSON RUDNICK INVESTMENT...
12%
VANGUARD GROUP INC
3.7%
BlackRock Finance, Inc.
2.5%
JPMORGAN CHASE & CO
2.3%
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
|
31%
|
$316,439,000
16,939,998 shares
|
— | 30 Sep 2021 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC |
13F
Company
|
12%
|
$123,514,000
6,612,072 shares
|
— | 30 Sep 2021 |
| VANGUARD GROUP INC |
13F
Company
|
3.7%
|
$36,944,000
1,977,754 shares
|
— | 30 Sep 2021 |
| BlackRock Finance, Inc. |
13F
Company
|
2.5%
|
$25,702,000
1,375,960 shares
|
— | 30 Sep 2021 |
| JPMORGAN CHASE & CO |
13F
Company
|
2.3%
|
$23,533,000
1,259,849 shares
|
— | 30 Sep 2021 |
| MACKENZIE FINANCIAL CORP |
13F
Company
|
2.1%
|
$21,036,000
1,126,098 shares
|
— | 30 Sep 2021 |
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 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
90
Shares
39,939,473
Rows available
90
| 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 2021 vs Q3 2021 Across Filers
Q3 2021 holders
84
Q4 2021 holders
90
Holder diff
6
| Investor | Q3 2021 Shares | Q4 2021 Shares | Share Diff | Share Chg % | Q3 2021 value | Q4 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend