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Public ownership evidence

MediaAlpha, Inc. (MAX) Ownership Disclosures

Read MAX insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-11-062026-11-04WHITE MOUNTAINS INSURANCE GROUP LTD, WM Hinson (Bermuda) Ltd.S5,500,391Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-11-04 and its public availability date is 2026-11-06. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0000950157-26-001218 ↗SEC 0001818383-26-000272 ↗SEC 0001818383-26-000272 ↗

Recent Form 4 activity

Inspect all 50 displayed rows: Recent Form 4 activity

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2026-11-062026-11-04WHITE MOUNTAINS INSURANCE GROUP LTD, WM Hinson (Bermuda) Ltd.S5,500,391Not reported
2026-11-052026-11-04Yi StevenS151,129Not reported
2026-11-052026-11-03Yi StevenS130,065Not reported
2026-11-052026-11-02Yi StevenS138,806Not reported
2026-11-052026-11-04Nonko EugeneS93,279Not reported
2026-11-052026-11-03Nonko EugeneS160,185Not reported
2026-11-052026-11-02Nonko EugeneS78,009Not reported
2026-11-052026-11-04Nonko EugeneS5,667Not reported
2026-11-052026-11-03Nonko EugeneS15,022Not reported
2026-11-052026-11-02Nonko EugeneS109,401Not reported
2026-11-042026-11-02Yeh Kuanling AmyS25,000Not reported
2026-11-042026-10-30Yeh Kuanling AmyS25,000Not reported
2026-10-292026-10-28Nonko EugeneS7,273Not reported
2026-10-292026-10-27Nonko EugeneS8,283Not reported
2026-10-292026-10-26Nonko EugeneS7,273Not reported
2026-10-292026-10-28Nonko EugeneS1,940Not reported
2026-10-292026-10-27Nonko EugeneS3,394Not reported
2026-10-292026-10-26Nonko EugeneS1,940Not reported
2026-10-222026-10-19Cramer KeithS12,000Not reported
2026-10-222026-10-21Nonko EugeneS7,273Not reported
2026-10-222026-10-20Nonko EugeneS7,273Not reported
2026-10-222026-10-19Nonko EugeneS7,273Not reported
2026-10-222026-10-21Nonko EugeneS1,940Not reported
2026-10-222026-10-20Nonko EugeneS1,940Not reported
2026-10-222026-10-19Nonko EugeneS1,940Not reported
2026-10-192026-10-16Yeh Kuanling AmyS3,000Not reported
2026-10-142026-10-14Nonko EugeneS6,667Not reported
2026-10-142026-10-13Nonko EugeneS6,667Not reported
2026-10-142026-10-12Nonko EugeneS6,667Not reported
2026-10-142026-10-14Nonko EugeneS1,067Not reported
2026-10-142026-10-13Nonko EugeneS1,067Not reported
2026-10-142026-10-12Nonko EugeneS1,067Not reported
2026-10-102026-10-09Yi StevenS2,033Not reported
2026-10-102026-10-08Yi StevenS24,000Not reported
2026-10-022026-10-01Sinanyan TigranA24,250Not reported
2026-09-252026-09-25Yeh Kuanling AmyS3,000Not reported
2026-09-232026-09-22Nonko EugeneS6,667Not reported
2026-09-232026-09-21Nonko EugeneS6,667Not reported
2026-09-232026-09-22Nonko EugeneS1,067Not reported
2026-09-232026-09-21Nonko EugeneS1,067Not reported
2026-09-162026-09-15Cramer KeithS13,000Not reported
2026-09-162026-09-16Nonko EugeneS7,273Not reported
2026-09-162026-09-15Nonko EugeneS7,273Not reported
2026-09-162026-09-14Nonko EugeneS7,778Not reported
2026-09-162026-09-16Nonko EugeneS1,940Not reported
2026-09-162026-09-15Nonko EugeneS1,940Not reported
2026-09-162026-09-14Nonko EugeneS2,667Not reported
2026-09-102026-09-10Nonko EugeneS7,273Not reported
2026-09-102026-09-09Nonko EugeneS7,273Not reported
2026-09-102026-09-08Nonko EugeneS7,273Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Corient Private Wealth LP2026-06-302026-08-2823,451$294,780None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-03-312026-08-2611,200$104,160None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2524,141$303,452None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25303,452$24,141,000None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2016,595$208,599None
Corient Private Wealth LP2026-06-302026-08-1823,013$289,274None
Graham Capital Management, L.P.2026-06-302026-08-1517,179$215,940None
SEI INVESTMENTS CO2026-06-302026-08-1544,637$561,087None
Murphy & Mullick Capital Management Corp2026-06-302026-08-15500$6,285None
Stoic Point Capital Management LLC2026-06-302026-08-15297,150$3,735,176None
Quarry LP2026-06-302026-08-15165$2,074None
Divisadero Street Capital Management, LP2026-06-302026-08-151,019,988$12,821,249None
XTX Topco Ltd2026-06-302026-08-15172,269$2,165,421None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15259,224$3,258,446None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15259,224$3,258,446None
Qube Research & Technologies Ltd2026-06-302026-08-1592,453$1,162,134None
Shay Capital LLC2026-06-302026-08-15570,000$7,164,900None
Caption Management, LLC2026-06-302026-08-1537,515$471,564None
OSAIC HOLDINGS, INC.2026-06-302026-08-15529$6,650None
OSAIC HOLDINGS, INC.2026-06-302026-08-15508$6,386None
Squarepoint Ops LLC2026-06-302026-08-15234,255$2,944,585None
Man Group plc2026-06-302026-08-15156,754$1,970,398None
MetLife Investment Management, LLC2026-06-302026-08-1521,402$269,023None
Clearline Capital LP2026-06-302026-08-152,713,890$34,113,597None
JANE STREET GROUP, LLC2026-06-302026-08-15413,079$5,192,403None
JANE STREET GROUP, LLC2026-06-302026-08-15138,546$1,741,523None
JANE STREET GROUP, LLC2026-06-302026-08-1545,000$565,650Call
PDT Partners, LLC2026-06-302026-08-1584,022$1,056,157None
Legal & General Group Plc2026-06-302026-08-1518,321$230,295None
Legal & General Group Plc2026-06-302026-08-156,184$77,733None
Legal & General Group Plc2026-06-302026-08-153,028$38,062None
HRT FINANCIAL LP2026-06-302026-08-15372,929$4,687,000None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1573,600$925,152Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1523,247$292,215None
J. Goldman & Co LP2026-06-302026-08-1588,400$1,111,188Call
J. Goldman & Co LP2026-06-302026-08-15598,070$7,517,740None
JACOBS ASSET MANAGEMENT, LLC2026-06-302026-08-15919,761$11,561,396None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-1537,065$465,907None
Allianz Asset Management GmbH2026-06-302026-08-1570,176$652,637None
Balyasny Asset Management L.P.2026-06-302026-08-15101,046$1,270,148None
Cerity Partners LLC2026-06-302026-08-1513,483$169,481None
Cerity Partners LLC2026-06-302026-08-15134$1,685None
Lighthouse Investment Partners, LLC2026-06-302026-08-1534,001$427,393None
Cresset Asset Management, LLC2026-06-302026-08-1511,123$139,816None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1510,042$126,228None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15790$9,930None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1576$955None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15379,269$4,767,411None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-151,454$18,277None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-156$75None

90-day public filing window, up to 50 source positions.

Corient Private Wealth LP ↗VIRGINIA RETIREMENT SYSTEMS ET Al ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗MERCER GLOBAL ADVISORS INC /ADV ↗Corient Private Wealth LP ↗Graham Capital Management, L.P. ↗SEI INVESTMENTS CO ↗Murphy & Mullick Capital Management Corp ↗Stoic Point Capital Management LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.