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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%
Clear all
All filings, new and amended.1–1 of 1
  • PassiveAmendment 17Below 5%
    Nov 13, 2026
    SPHR · Sphere Entertainment Co
    Ariel Investments, LLC
    4.7% · 1,371,771 shSEC