MDIA MEDIACO HLDG INC

CL A (common), issuer CIK 1784254

17 managers (19 13F filers) reported a position in MDIA shares at 2026-06-30, 71,072,793 shares in all. 3 filers opened a position and 1 filer sold out during the quarter.

Managers: 17
13F filers: 19
New: 3
Added: 3
Reduced: 5
Sold out: 1
Shares held by filers: 71,072,793

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

Holder	Shares	Value	% of portfolio	Change	Source
Standard General L.P.	35,426,400	$34.9M	7.27%	0	13F-HR Timeline
BlackRock, Inc.in group BlackRock, Inc.	35,284,678	$34.8M	<0.01%	0	13F-HR Timeline Group
VANGUARD GROUP INCgroup of 3 filers holding	121,480	$120K		+37,917	Timeline VANGUARD CAPITAL MANAGEMENT LLC: 70,508 (<0.01%) 13F-HR VANGUARD FIDUCIARY TRUST CO: 49,246 (<0.01%) 13F-HR Vanguard Global Advisers, LLC: 1,726 (<0.01%) 13F-HR
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC	96,397	$95.2K	<0.01%	-18,868	13F-HR Timeline Group
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC	62,147	$61.3K	<0.01%	-27,129	13F-HR Timeline Group
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC	28,302	$27.9K	<0.01%	new	13F-HR Timeline Group
NORTHERN TRUST CORPin group NORTHERN TRUST CORP	18,274	$18K	<0.01%	+4,420	13F-HR Timeline Group
STATE STREET CORPin group STATE STREET CORP	16,659	$16.4K	<0.01%	0	13F-HR Timeline Group
XTX Topco Ltdin group XTX Topco Ltd	10,375	$10.2K	<0.01%	new	13F-HR Timeline Group
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…	6,596	$6.5K	<0.01%	+1,413	13F-HR Timeline Group
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA	1,000	$1K	<0.01%	new	13F-HR Timeline Group
UBS Group AGin group UBS Group AG	231	$228	<0.01%	-54,739	13F-HR Timeline Group
MORGAN STANLEYin group MORGAN STANLEY	200	$197	<0.01%	-3	13F-HR Timeline Group
Allworth Financial LP	32	$32	<0.01%	0	13F-HR Timeline
HARBOUR INVESTMENTS, INC.	19	$19	<0.01%	0	13F-HR Timeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO	3	$3	<0.01%	-383,400	13F-HR Timeline Group
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN	0	$0	0%	0	13F-HR Timeline GroupValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.