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Activist & passive stakes

Investors crossing the 5% ownership line, from SEC Schedule 13D (activist) and 13G (passive) filings. Newest first.

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Filing
NewAmendmentsAll
Stake type
ActivistPassive
Min % owned
≥10%≥20%
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All filings, new and amended.1–4 of 4
  • ActivistAmendment 9
    Nov 13, 2026
    MAX · MediaAlpha, Inc.
    White Mountains Insurance Group, Ltd.
    22.6% · 11,226,223 shSEC
  • ActivistNew
    Nov 6, 2026
    SVIA · Silvia, Inc.
    Shain Noor
    5.6% · 4,233,069 shSEC
  • ActivistAmendment 8
    Nov 6, 2026
    MAX · MediaAlpha, Inc.
    White Mountains Insurance Group, Ltd.
    24.3% · 12,356,223 shSEC
  • ActivistNew
    Nov 4, 2026
    MSIF · Msc Income Fund, Inc.
    Main Street Capital CORP
    5% · 2,250,574 shSEC