Mediaalpha (MAX): SEC Schedule 13D reported Nov 5, 2026
Mediaalpha · MAX · Reported Nov 5, 2026
The filing itself (the amount as filed, the dates, the official record) is free to read on its share page. This page adds the context OQRO calculates around it.
SEC Schedule 13D filed by White Mountains Insurance Group for Mediaalpha (MAX), reported Nov 5, 2026, explained in plain words next to the official document.
Amount
Filed
Compared with the past
Related filings
The filing, in plain words
One filing, read in full
Every field of the record next to the official document, with how it compares with the past.
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What this page holds
- The filing in plain words
- Context: how it compares with the past
- Related filings at the same company
- A link to the official record
What OQRO is
OQRO reads the public record for US-listed companies — insider trades filed with the SEC, stock trades disclosed by members of Congress, fund holdings from 13F filings, and federal contract awards — and puts each one in plain words next to the filing it came from. It describes what was disclosed. It does not give investment advice or tell you what to buy.
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How to read SEC Schedule 13D
A Schedule 13D and a Schedule 13G both disclose beneficial ownership of more than 5% of a US company's voting shares. A 13D is the long form, filed by holders who may seek to influence or control the company, and it must state what they intend to do. A 13G is the short form, open only to passive holders and to certain institutions holding in the ordinary course of business, and it asks no question about intent.
Full guide: Schedule 13D vs Schedule 13G: what is the difference?