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MDIA · Mediaco Holding Inc. · Shareholders & Ownership

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$1.03 -0.07 (-6.36%) At close · Oct 21
Market Cap
$92.42M
Shares
84.02M
Volume · Oct 21 3459 Avg daily vol (3M) 14.23K

Every disclosed holder of MDIA in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns MDIA

13F quarter Jun 30, 2026

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group Shares % Out
Institutional (13F) 71,072,793 84.59%
Insiders (Forms 3, 4, 5) 0 0.00%
13D/G-only blocks 70,515,166 83.93%
Remaining 57,568,101 -68.52%
Registered funds (N-PORT, not summed) 167,695 0.20%

Shares outstanding: 84,019,858, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of MDIA

# Holder Shares
1
Standard General L.P.
13F CIK 1409888 · Registered investment adviser · Jun 30, 2026
35,426,400
1.1
Standard General L.P.
Insider CIK 1409888 · Sep 12, 2025
10% Owner, issuer-wide, not summed
40,839,597
2
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
35,284,678
2.1
HPS Group GP, LLC
Insider CIK 2019987 · May 1, 2025
10% Owner, issuer-wide, not summed
7,051,538
3
Scott Kapnick
13D CIK 1709654 · Unknown · May 1, 2025
35,257,690
4
BlackRock Portfolio Management LLC
13D CIK 2052113 · Holding company · Sep 5, 2025
35,257,476
4.1
BlackRock Portfolio Management LLC
Insider CIK 2052113 · Sep 5, 2025
10% Owner, issuer-wide, not summed
35,257,476
5
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
96,397
6
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
70,508
7
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
70,508
8
MILLENNIUM MANAGEMENT LLC
13F CIK 1273087 · Registered investment adviser · Jun 30, 2026
62,147
9
Fidelity Extended Market Index Fund
Fund S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
61,443
10
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
49,246
11
CITADEL ADVISORS LLC
13F CIK 1423053 · Registered investment adviser · Jun 30, 2026
28,302
12
Fidelity Nasdaq Composite Index Fund
Fund S000055366 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
24,810
13
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
18,274
14
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
16,659
15
XTX Topco Ltd
13F CIK 1828301 · Unknown · Jun 30, 2026
10,375
16
Tower Research Capital LLC (TRC)
13F CIK 1533421 · Unknown · Jun 30, 2026
6,596
17
Fidelity Series Total Market Index Fund
Fund S000065248 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
5,216
18
Fidelity Total Market Index Fund
Fund S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
4,718
19
Vanguard Global Advisers, LLC
13F CIK 1811242 · Registered investment adviser · Jun 30, 2026
1,726
20
Gabelli Global Mini Mites Fund
Fund S000063160 · Registered fund · Jun 30, 2026
GAMCO Global Series Funds, Inc, not summed
1,000
21
ROYAL BANK OF CANADA
13F CIK 1000275 · Bank · Jun 30, 2026
1,000
22
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
231
23
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
200
24
Allworth Financial LP
13F CIK 1555170 · Unknown · Jun 30, 2026
32
25
HARBOUR INVESTMENTS, INC.
13F CIK 810121 · Registered investment adviser · Jun 30, 2026
19
26
JPMORGAN CHASE & CO
13F CIK 19617 · Bank · Jun 30, 2026
3

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Key facts CIK 1784254 CUSIP 58450D104 13F (30d) 1 filings 1 filers Visit website Investor relations