Mediaalpha Inc. Class AMAX
13F holders, Q4 2024 (December 31)162holders +11
27new positions
23sold out
5famous investors
$11.29avg. 13F price*
At the end of Q4 2024, 162 institutions reported holding Mediaalpha Inc. Class A (MAX) in their 13F filings, up 11 from Q3 2024. 27 opened new positions and 23 sold out. The largest holders were White Mountains Insurance Group Ltd. ($201.6M), Vanguard Group Inc. ($40.9M) and BlackRock, Inc. ($40.2M). 5 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Mediaalpha Inc. Class A
- CUSIP
- 58450V104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2024 → Q4 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 27 | $10.7M |
| Exits | 23 | $51.5M |
All 13F filers, Q3 2024 → Q4 2024: 6,233,596 shares bought and 7,191,226 shares sold, net −957,630 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 162 holders
| White Mountains Insurance Group Ltd. | 47.31% | No change | 17,856,614 | $201.6M |
| Vanguard Group Inc. | 0.00% | Add +4.9% | 3,623,344 | $40.9M |
| BlackRock, Inc. | 0.00% | Reduce -5.6% | 3,557,049 | $40.2M |
| Broad Bay Capital Management, LP | 4.05% | Reduce -10.1% | 2,218,685 | $25.0M |
| TimesSquare Capital Management, LLC | 0.27% | Add +77.7% | 1,628,815 | $18.4M |
| Clearline Capital LP | 1.78% | Reduce -4.3% | 1,188,161 | $13.4M |
| Driehaus Capital Management LLC | 0.09% | Reduce -57.3% | 960,757 | $10.8M |
| Goldman Sachs Group Inc. | 0.00% | Add +44.9% | 804,930 | $9.1M |
| Millennium Management | 0.01% | Add +91.0% | 781,349 | $8.8M |
| Arrowstreet Capital, Limited Partnership | 0.01% | Reduce -12.3% | 762,575 | $8.6M |
| Geode Capital Management, LLC | 0.00% | Add +1.2% | 698,703 | $7.9M |
| Qube Research & Technologies Ltd | 0.01% | Reduce -1.4% | 670,153 | $7.6M |
| Morgan Stanley | 0.00% | Reduce -15.4% | 611,061 | $6.9M |
| State Street Corp. | 0.00% | Add +10.6% | 605,986 | $6.8M |
| Nuveen Asset Management, LLC | 0.00% | Reduce -48.4% | 587,627 | $6.6M |
| Renaissance Technologies | 0.01% | Add +87.7% | 539,300 | $6.1M |
| Jacobs Levy Equity Management, Inc. | 0.02% | Add +2683.2% | 476,342 | $5.4M |
| AQR Capital Management | 0.01% | Add +570.7% | 472,215 | $5.3M |
| CenterBook Partners LP | 0.32% | Add +485.7% | 471,864 | $5.3M |
| Lazard Asset Management LLC | 0.01% | Add +3.8% | 456,550 | $5.2M |
| Shay Capital LLC | 1.24% | Add +127.2% | 447,500 | $5.1M |
| Acadian Asset Management LLC | 0.01% | Add +401.4% | 444,753 | $5.0M |
| UBS Group AG | 0.00% | Add +2078.0% | 416,126 | $4.7M |
| Marshall Wace, LLP | 0.01% | Add +118.0% | 387,701 | $4.4M |
| D. E. Shaw & Co. | 0.01% | Reduce -21.3% | 378,211 | $4.3M |
| Jacobs Asset Management, LLC | 2.58% | Add +5.3% | 356,900 | $4.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +18.4% | 324,497 | $3.7M |
| J. Goldman & Co LP | 0.12% | Reduce -33.3% | 311,125 | $3.5M |
| Northern Trust Corp. | 0.00% | Add +10.6% | 282,172 | $3.2M |
| Norges Bank | 0.00% | New | 281,900 | $3.2M |
| Earnest Partners LLC | 0.01% | Add +0.4% | 241,559 | $2.7M |
| Two Sigma Investments, LP | 0.01% | Reduce -18.5% | 224,198 | $2.5M |
| Hillsdale Investment Management Inc. | 0.12% | Add +0.4% | 208,900 | $2.4M |
| ExodusPoint Capital Management, LP | 0.02% | Add +671.3% | 166,912 | $1.9M |
| Allianz Asset Management GmbH | 0.00% | New | 166,435 | $1.9M |
| Squarepoint Ops LLC | 0.00% | Reduce -20.9% | 155,458 | $1.8M |
| Citadel Advisors | 0.00% | Reduce -14.8% | 155,034 | $1.8M |
| Trexquant Investment LP | 0.02% | Reduce -23.2% | 139,578 | $1.6M |
| Algert Global LLC | 0.04% | Add +9.0% | 136,509 | $1.5M |
| Cubist Systematic Strategies, LLC | 0.02% | Reduce -48.5% | 129,872 | $1.5M |
| Los Angeles Capital Management LLC | 0.01% | Add +128.4% | 126,045 | $1.4M |
| Nantahala Capital Management, LLC | 0.10% | No change | 123,564 | $1.4M |
| JPMorgan Chase & Co. | 0.00% | Add +52.9% | 122,386 | $1.4M |
| Two Sigma Advisers, LP | 0.00% | Add +9.4% | 118,400 | $1.3M |
| Sei Investments Co. | 0.00% | Add +180.5% | 115,181 | $1.3M |
| Deutsche Bank AG | 0.00% | Reduce -76.1% | 100,071 | $1.1M |
| Jackson Creek Investment Advisors LLC | 0.32% | Reduce -3.0% | 93,844 | $1.1M |
| Bank of New York Mellon Corp | 0.00% | Add +17.4% | 89,949 | $1.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +21.9% | 89,478 | $1.0M |
| Victory Capital Management Inc. | 0.00% | Add +135.3% | 85,564 | $966K |
| Lighthouse Investment Partners, LLC | 0.04% | Reduce -75.8% | 85,081 | $961K |
| Schroder Investment Management Group | 0.00% | New | 80,817 | $902K |
| Segall Bryant & Hamill, LLC | 0.01% | New | 73,172 | $826K |
| Jump Financial, LLC | 0.02% | Add +34.2% | 72,500 | $819K |
| HRT Financial LP | 0.00% | New | 69,779 | $787K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +65.2% | 67,832 | $766K |
| Graham Capital Management, L.P. | 0.04% | Add +102.9% | 64,251 | $725K |
| Swiss National Bank | 0.00% | No change | 64,100 | $724K |
| Barclays PLC | 0.00% | Reduce -6.1% | 62,463 | $705K |
| Mariner, LLC | 0.00% | Add +7.1% | 60,433 | $682K |
| Mackenzie Financial Corp. | 0.00% | Add +354.3% | 60,259 | $680K |
| Franklin Resources Inc. | 0.00% | Reduce -53.6% | 59,724 | $674K |
| Verition Fund Management LLC | 0.00% | Add +302.7% | 57,396 | $648K |
| Jane Street Group, LLC | 0.00% | Add +44.6% | 55,309 | $624K |
| Blair William & Co. | 0.00% | New | 53,066 | $599K |
| Bank of America Corp. | 0.00% | Reduce -77.5% | 51,589 | $582K |
| Engineers Gate Manager LP | 0.01% | Add +134.1% | 51,187 | $578K |
| Russell Investments Group, Ltd. | 0.00% | Add +418.3% | 49,625 | $557K |
| Fox Run Management, L.L.C. | 0.10% | Add +54.0% | 46,797 | $528K |
| Cannell & Spears LLC | 0.01% | Reduce -30.6% | 45,700 | $516K |
| Dynamic Technology Lab Private Ltd | 0.08% | Add +216.0% | 45,654 | $515K |
| Severin Investments, LLC | 0.51% | — | 45,493 | $514K |
| XTX Topco Ltd | 0.04% | Add +97.0% | 44,483 | $502K |
| Rhumbline Advisers | 0.00% | Add +4.3% | 43,431 | $490K |
| Sherbrooke Park Advisers LLC | 0.15% | Add +17.6% | 42,843 | $484K |
| Alpha DNA Investment Management LLC | 0.26% | Add +69.3% | 41,543 | $469K |
| HSBC Holdings PLC | 0.00% | Reduce -6.2% | 41,425 | $467K |
| Nebula Research & Development LLC | 0.05% | Reduce -2.7% | 40,109 | $453K |
| Corton Capital Inc. | 0.25% | Add +8.5% | 38,487 | $435K |
| Teacher Retirement System of Texas | 0.00% | Reduce -81.0% | 37,539 | $424K |
| Quantbot Technologies LP | 0.02% | Add +42.7% | 37,247 | $421K |
| Westfield Capital Management Co. LP | 0.00% | No change | 33,800 | $382K |
| State of Wisconsin Investment Board | 0.00% | Reduce -36.0% | 33,483 | $378K |
| Gsa Capital Partners LLP | 0.03% | Reduce -28.4% | 31,810 | $359K |
| Susquehanna International Group, LLP | 0.00% | Reduce -48.5% | 31,253 | $353K |
| California State Teachers Retirement System | 0.00% | Reduce -0.8% | 30,346 | $343K |
| BNP Paribas Financial Markets | 0.00% | New | 28,630 | $323K |
| Alliancebernstein L.P. | 0.00% | No change | 28,330 | $320K |
| Legal & General Group Plc | 0.00% | Add +4.8% | 28,174 | $318K |
| Citigroup Inc. | 0.00% | Add +26.6% | 28,173 | $318K |
| Dark Forest Capital Management LP | 0.05% | New | 27,872 | $315K |
| Stoneridge Investment Partners LLC | 0.11% | New | 27,547 | $311K |
| Allspring Global Investments Holdings, LLC | 0.00% | Add +1.1% | 27,427 | $310K |
| Schonfeld Strategic Advisors LLC | 0.00% | Add +61.5% | 27,300 | $308K |
| Integrated Quantitative Investments LLC | 0.15% | — | 27,298 | $308K |
| Centiva Capital, LP | 0.01% | Reduce -13.1% | 25,658 | $290K |
| PharVision Advisers, LLC | 0.24% | — | 24,736 | $279K |
| US Bancorp \de | 0.00% | Add +35.6% | 23,547 | $266K |
| MetLife Investment Management, LLC | 0.00% | Add +22.7% | 21,402 | $242K |
| Robeco Institutional Asset Management B.V. | 0.00% | Add +73.3% | 21,140 | $239K |
"% of holder's portfolio" is MAX's weight in each manager's 13F, not the share of Mediaalpha Inc. Class A the manager owns.