MEDIACO HOLDING INC-CL A (MDIA) Institutional Ownership Changes & 13F Activity

MEDIACO HOLDING INC-CL A (MDIA). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Ubs Group Ag, Vanguard Capital Management Llc, Citadel Advisors Llc, Millennium Management Llc, and Geode Capital Management, Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Citadel Advisors LlcBuy+28,302—28,302$27.91KQ2 2026Sep 02, 2026
Millennium Management LlcSell-27,129-30.4%62,147$61.28KQ2 2026Aug 14, 2026
Xtx Topco LtdBuy+10,375—10,375$10.23KQ2 2026Aug 14, 2026
Royal Bank Of CanadaBuy+1,000—1,000$1.00KQ2 2026Aug 14, 2026
Ubs Group AgSell-54,739-99.6%231$228.00Q2 2026Aug 13, 2026
Vanguard Capital Management LlcBuy+37,917+116.3%70,508$69.52KQ2 2026Aug 13, 2026
Northern Trust CorpBuy+4,420+31.9%18,274$18.02KQ2 2026Aug 13, 2026
Morgan StanleySell-3-1.5%200$197.00Q2 2026Aug 13, 2026
Geode Capital Management, LlcSell-18,868-16.4%96,397$95.16KQ2 2026Aug 12, 2026
Jpmorgan Chase & CoBuy+3—3$3.00Q2 2026Aug 12, 2026
Tower Research Capital Llc (Trc)Buy+1,413+27.3%6,596$6.50KQ2 2026Aug 11, 2026
Citigroup IncSell-1-100.0%0$0.00Q2 2026May 11, 2026
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Frequently asked questions about MDIA activity

  • Which institutional owners are buying MDIA?

    Institutional owners buying MDIA include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MDIA activity?

    "Buy" means an investor increased their reported position in MDIA compared to the prior reporting period. This reflects growing exposure to MEDIACO HOLDING INC-CL A (MDIA) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MDIA increasing?

    Institutional interest in MDIA can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.