MediaAlpha, Inc. MAX
CIK 0001818383 · CUSIP 58450V104
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | WHITE MOUNTAINS INSURANCE GROUP LTD CIK 776867 · View history | $224.46M 17,856,614 shares | 57.03% | 0(0.0%)Unchanged | SEC filing ↗ Aug 12, 2026 | ▾ |
| 02 | BlackRock, Inc. CIK 2012383 · View history | $42.64M 3,392,357 shares | 0.00% | -84.33K(-2.4%)Reduced | SEC filing ↗ Aug 7, 2026 | ▾ |
| 03 | Clearline Capital LP CIK 1600136 · View history | $34.11M 2,713,890 shares | 2.20% | +123.22K(+4.8%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 04 | VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · View history | $16.04M 1,276,369 shares | 0.00% | -109.36K(-7.9%)Reduced | SEC filing ↗ Aug 13, 2026 | ▾ |
| 05 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $13.43M 1,068,308 shares | 0.00% | -1.78K(-0.2%)Reduced | SEC filing ↗ Aug 12, 2026 | ▾ |
| 06 | Divisadero Street Capital Management, LP CIK 1901865 · View history | $12.82M 1,019,988 shares | 0.30% | +933.08K(+1073.7%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 07 | JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history | $12.21M 971,232 shares | 0.04% | +221.18K(+29.5%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 08 | ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history | $12.02M 957,095 shares | 0.01% | +109.90K(+13.0%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
| 09 | JACOBS ASSET MANAGEMENT, LLC CIK 1351063 · View history | $11.56M 919,761 shares | 8.71% | -4.68K(-0.5%)Reduced | SEC filing ↗ Aug 14, 2026 | ▾ |
| 10 | STATE STREET CORP CIK 93751 · View history | $10.84M 862,235 shares | 0.00% | +24.07K(+2.9%)Added | SEC filing ↗ Aug 7, 2026 | ▾ |
| 11 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history | $10.43M 829,958 shares | 0.00% | -232.02K(-21.8%)Reduced | SEC filing ↗ Aug 13, 2026 | ▾ |
| 12 | MORGAN STANLEY CIK 895421 · View history | $10.32M 821,170 shares | 0.00% | +118.15K(+16.8%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
| 13 | Nuveen, LLC CIK 1871926 · View history | $9.46M 752,447 shares | 0.00% | +51.05K(+7.3%)Added | SEC filing ↗ Aug 11, 2026 | ▾ |
| 14 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $8.82M 701,914 shares | 0.00% | +81.25K(+13.1%)Added | SEC filing ↗ Aug 11, 2026 | ▾ |
| 15 | J. Goldman & Co LP CIK 1412741 · View history | $7.52M 598,070 shares | 0.26% | -584.60K(-49.4%)Reduced | SEC filing ↗ Aug 14, 2026 | ▾ |
| 16 | CITADEL ADVISORS LLC CIK 1423053 · Amended · View history | $7.41M 589,696 shares | 0.00% | +360.37K(+157.1%)Added | SEC filing ↗ Sep 2, 2026 | ▾ |
| 17 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $7.22M 574,407 shares | 0.01% | -144.89K(-20.1%)Reduced | SEC filing ↗ Aug 13, 2026 | ▾ |
| 18 | Shay Capital LLC CIK 1723643 · View history | $7.16M 570,000 shares | 0.79% | -205.00K(-26.5%)Reduced | SEC filing ↗ Aug 14, 2026 | ▾ |
| 19 | JANE STREET GROUP, LLC CIK 1595888 · View history | $6.93M 551,625 shares | 0.00% | +268.62K(+94.9%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 20 | D. E. Shaw & Co., Inc. CIK 1009207 · View history | $6.74M 535,926 shares | 0.00% | +193.87K(+56.7%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
Showing 20 / 149 institutions. The complete set is available through the API.
Coverage & totals by quarter
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