Who Owns MEDIAALPHA INC (MAX)? -- Institutional Holders (2026-06-30)
177 institutions reported holding $618.1M of MEDIAALPHA INC (MAX) in SEC 13F filings for 2026-06-30. Largest institutional holders: WHITE MOUNTAINS INSURANCE GROUP LTD ($224.5M), BlackRock, Inc. ($42.6M), Clearline Capital LP ($34.1M), VANGUARD GROUP INC ($24.8M), JPMORGAN CHASE & CO ($23.3M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | WHITE MOUNTAINS INSURANCE GROUP LTD | $224.5M | 17.9M | Hold |
| 2 | BlackRock, Inc. | $42.6M | 3.4M | Trimmed |
| 3 | Clearline Capital LP | $34.1M | 2.7M | Added |
| 4 | VANGUARD GROUP INC | $24.8M | 2.0M | Trimmed |
| 5 | JPMORGAN CHASE & CO | $23.3M | 1.9M | Added |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $13.4M | 1.1M | Trimmed |
| 7 | Divisadero Street Capital Management, LP | $12.8M | 1.0M | Added |
| 8 | JACOBS LEVY EQUITY MANAGEMENT, INC | $12.2M | 971,232 | Added |
| 9 | ACADIAN ASSET MANAGEMENT LLC | $12.0M | 957,095 | Added |
| 10 | JACOBS ASSET MANAGEMENT, LLC | $11.6M | 919,761 | Trimmed |
| 11 | STATE STREET CORP | $10.8M | 862,235 | Added |
| 12 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $10.4M | 829,958 | Trimmed |
| 13 | MORGAN STANLEY | $10.3M | 821,170 | Added |
| 14 | Nuveen, LLC | $9.5M | 752,447 | Added |
| 15 | DIMENSIONAL FUND ADVISORS LP | $8.8M | 701,914 | Added |
| 16 | J. Goldman & Co LP | $8.6M | 686,470 | Trimmed |
| 17 | CITADEL ADVISORS LLC | $8.5M | 672,996 | Added |
| 18 | JANE STREET GROUP, LLC | $7.5M | 596,625 | Added |
| 19 | RENAISSANCE TECHNOLOGIES LLC | $7.2M | 574,407 | Trimmed |
| 20 | Shay Capital LLC | $7.2M | 570,000 | Trimmed |
| 21 | D. E. Shaw & Co., Inc. | $6.7M | 535,926 | Added |
| 22 | SPEECE THORSON CAPITAL GROUP INC | $6.1M | 489,098 | Trimmed |
| 23 | EVR Research LP | $5.5M | 440,000 | New |
| 24 | GOLDMAN SACHS GROUP INC | $5.4M | 428,866 | Trimmed |
| 25 | TWO SIGMA INVESTMENTS, LP | $5.1M | 409,480 | Added |
Source: SEC Form 13F filings · as of 2026-06-30