Stock Ownership/MDIA

MEDIACO HLDG INC (MDIA): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in MDIA · Communication Services. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
2
13F filers
Aggregate Value
$89K
Across holders
Last Price
$1.04
2026-10-08
Sector
Communication Services
GICS
Quarterly fund activity1 increased1 reduced0 exited
Institutional Holders of MDIA
↗
2 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund62K$61K68.7%0.0%Reduced$-27KQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund28K$28K31.3%0.0%Added—Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$61K· 68.7% of total· 0.0% port· 62K sh· $-27K QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$28K· 31.3% of total· 0.0% port· 28K sh· — QoQ· Q2 2026
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