Activist & passive stakes

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

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All filings, new and amended.1–1 of 1
  • PassiveNewBelow 5%
    Nov 12, 2026
    HMH · HMH Holding Inc
    Schroder Investment Management Group
    4.5% · 542,414 shSEC