Latest Period
Q2 2026
Security Snapshot
MediaAlpha, Inc. - Class A Common Stock, $0.01 par value per share (MAX) Institutional Ownership
CUSIP: 58450V104
13F Institutional Holders and Ownership History from Q4 2020 to Q2 2026
Institutions Reporting
153
Shares (Excl. Options)
48,642,000
Price
$12.57
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- Security type / class
- Equity / Class A Common Stock, $0.01 par value per share
- Symbol
- MAX on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 48,642,000
- Total 13F value
- $610,162,965
- Portfolio coverage rank
- 0%
- Share change
- +95,808
- Value change
- +$5,391,847
- Number of holders
- 153
- Shares outstanding
- 53,948,069
- SEC-reported price per share
- $14.19
- Insider filing price
- $14.19
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MAX - MediaAlpha, Inc. - Class A Common Stock, $0.01 par value per share is tracked under CUSIP 58450V104.
- 153 institutions reported positions in Q2 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 162 to 153 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $451,854,704 to $610,162,965.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 153 institutions filings for Q2 2026.
Security key
58450V104
Latest holder period
Q2 2026
13F holders
153
13D/G owners
5
CIK / CUSIP context first
Open Q2 2026 holders
MAX full holder history
MediaAlpha, Inc. SEC filings
MediaAlpha, Inc. company facts
MediaAlpha, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 58450V104:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
MAX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| WHITE MOUNTAINS INSURANCE GROUP LTD | 33% | +4.2% | $162,138,055 | 17,856,614 | 0% | White Mountains Insurance Group, Ltd. | 29 Apr 2026 | |
| Nonko Eugene | 11% | $50,433,626 | 5,996,864 | Eugene Nonko | 26 Feb 2025 | |||
| Divisadero Street Capital Management, LP | 5.8% | $39,331,379 | 3,128,988 | Divisadero Street Capital Management, LP | 21 Jul 2026 | |||
| VANGUARD GROUP INC | 4.6% | -13% | $29,595,067 | -$3,558,606 | 2,600,621 | -11% | The Vanguard Group | 30 Sep 2025 |
| BlackRock, Inc. | 4.2% | $19,603,550 | 2,330,981 | BlackRock, Inc. | 31 Mar 2025 |
As of 30 Jun 2026, 153 institutional investors reported holding 48,642,000 shares of MediaAlpha, Inc. - Class A Common Stock, $0.01 par value per share (MAX). This represents 90% of the company’s total 53,948,069 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
76%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| WHITE MOUNTAINS INSURANCE GROUP LTD | 33% | 17,856,614 | 0% | 57% | $224,457,638 |
| BlackRock, Inc. | 6.3% | 3,392,357 | -2.4% | 0% | $42,641,927 |
| Clearline Capital LP | 5% | 2,713,890 | +4.8% | 2.2% | $34,113,597 |
| JPMORGAN CHASE & CO | 3.5% | 1,880,062 | +7.7% | 0% | $23,293,969 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.4% | 1,276,369 | -7.9% | 0% | $16,043,958 |
| GEODE CAPITAL MANAGEMENT, LLC | 2% | 1,068,308 | -0.17% | 0% | $13,430,961 |
| Divisadero Street Capital Management, LP | 1.9% | 1,019,988 | +1074% | 0.3% | $12,821,249 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 1.8% | 971,232 | +29% | 0.04% | $12,208,386 |
| ACADIAN ASSET MANAGEMENT LLC | 1.8% | 957,095 | +13% | 0.01% | $12,019,000 |
| JACOBS ASSET MANAGEMENT, LLC | 1.7% | 919,761 | -0.51% | 8.7% | $11,561,396 |
| STATE STREET CORP | 1.6% | 862,235 | +2.9% | 0% | $10,838,294 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.5% | 829,958 | -22% | 0% | $10,432,572 |
| MORGAN STANLEY | 1.5% | 821,170 | +17% | 0% | $10,322,107 |
| Nuveen, LLC | 1.4% | 752,447 | +7.3% | 0% | $9,458,259 |
| DIMENSIONAL FUND ADVISORS LP | 1.3% | 701,914 | +13% | 0% | $8,822,450 |
| J. Goldman & Co LP | 1.1% | 598,070 | -49% | 0.26% | $7,517,740 |
| CITADEL ADVISORS LLC | 1.1% | 589,696 | +157% | 0% | $7,412,479 |
| RENAISSANCE TECHNOLOGIES LLC | 1.1% | 574,407 | -20% | 0.01% | $7,220,296 |
| Shay Capital LLC | 1.1% | 570,000 | -26% | 0.79% | $7,164,900 |
| JANE STREET GROUP, LLC | 1% | 551,625 | +95% | 0% | $6,933,926 |
| D. E. Shaw & Co., Inc. | 0.99% | 535,926 | +57% | 0% | $6,736,590 |
| SPEECE THORSON CAPITAL GROUP INC | 0.91% | 489,098 | -2% | 1.3% | $6,148,000 |
| EVR Research LP | 0.82% | 440,000 | 2.7% | $5,530,800 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.8% | 433,046 | -21% | 0% | $5,443,388 |
| GOLDMAN SACHS GROUP INC | 0.79% | 428,866 | -31% | 0% | $5,390,845 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
23
Latest
Q2 2026
Rows shown
1-23 of 23
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 48,642,000 | $610,162,965 | +$5,391,847 | $12.57 | 153 |
| 2026 Q1 | 48,480,595 | $451,854,704 | +$5,648,903 | $9.30 | 162 |
| 2025 Q4 | 47,777,704 | $618,558,872 | -$3,810,531 | $12.95 | 172 |
| 2025 Q3 | 47,834,261 | $544,284,591 | -$5,576,109 | $11.38 | 155 |
| 2025 Q2 | 48,248,875 | $528,271,825 | +$14,118,305 | $10.95 | 150 |
| 2025 Q1 | 47,216,825 | $436,277,189 | -$13,260,709 | $9.24 | 144 |
| 2024 Q4 | 48,012,860 | $542,040,862 | -$30,038,335 | $11.29 | 160 |
| 2024 Q3 | 48,841,707 | $884,623,606 | -$13,101,139 | $18.11 | 149 |
| 2024 Q2 | 50,156,074 | $660,550,927 | +$73,061,027 | $13.17 | 148 |
| 2024 Q1 | 44,465,137 | $905,749,037 | +$50,675,474 | $20.37 | 121 |
| 2023 Q4 | 42,177,953 | $470,287,857 | +$11,065,270 | $11.15 | 91 |
| 2023 Q3 | 41,318,609 | $341,293,559 | -$30,498,529 | $8.26 | 88 |
| 2023 Q2 | 44,969,280 | $463,619,203 | +$44,418,589 | $10.31 | 93 |
| 2023 Q1 | 40,225,052 | $602,536,583 | +$6,187,743 | $14.98 | 97 |
| 2022 Q4 | 40,074,367 | $398,740,275 | -$6,863,804 | $9.95 | 99 |
| 2022 Q3 | 40,904,666 | $357,953,192 | +$8,359,779 | $8.75 | 85 |
| 2022 Q2 | 39,895,591 | $392,992,743 | -$19,477,199 | $9.85 | 86 |
| 2022 Q1 | 40,929,266 | $677,250,933 | +$17,737,970 | $16.55 | 92 |
| 2021 Q4 | 39,939,473 | $616,578,624 | +$24,793,185 | $15.44 | 90 |
| 2021 Q3 | 37,915,100 | $708,460,043 | -$44,874,431 | $18.68 | 84 |
| 2021 Q2 | 37,796,810 | $1,591,371,035 | +$61,978,526 | $42.10 | 98 |
| 2021 Q1 | 36,467,183 | $1,291,891,052 | +$143,997,399 | $35.43 | 96 |
| 2020 Q4 | 32,348,576 | $1,263,856,778 | +$460,451,778 | $39.07 | 65 |