MDIA
Mediaco Holding Inc.Company with tickers: MDIA
CIK
1784254
CUSIP
58450D104
Shares Outstanding
76,316,142
13F Activity (30d)
19 filings
17 filers
Holders: 17
Total Value: $47,101,031
Total Shares: 71,473,506
Institutional Ownership Trend
Holder Concentration
Across 17 13F filers · Δ vs Dec 31, 2025Top Holder
49.6%
+0.7 pts
Top 5
99.8%
−0.0 pts
Top 10
100.0%
−0.0 pts
HHI
4,894
Highly concentrated
+126
Quarterly Activity
vs Dec 31, 2025
New
4
Increased
4
Decreased
2
Sold Out
2
Unchanged
7
Holder count:
+2
Institutional value:
+12.1%
Shares held:
-1.3%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega UBS Group AG | +1,632 | 54,970 | |
| Mid Tower Research Capital LLC (TRC) | +520 | 5,183 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | +506 | 115,265 | |
| Mega MORGAN STANLEY | +200 | 203 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega JPMORGAN CHASE & CO | −949,115 | 383,403 | |
| Mega MILLENNIUM MANAGEMENT LLC | −16,572 | 89,276 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD FIDUCIARY TRUST CO | 49,246 | $32,453 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 32,591 | $21,477 | |
| Mega Vanguard Global Advisers, LLC | 1,726 | $1,137 | |
| Mega CITIGROUP INC | 1 | $0 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD GROUP INC | 83,563 | $48,465 | |
| Mega BANK OF AMERICA CORP /DE/ | 132 | $75 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Small Standard General L.P. | $23,345,997 | 49.57% | 35,426,400 | Shares | Sole | 2026-05-15 | ||||
| Mega BlackRock, Inc. | $23,252,602 | 49.37% | 35,284,678 | Shares | Sole | 2026-05-13 | ||||
| Mega JPMORGAN CHASE & CO | $252,662 | 0.54% | 383,403 | Shares | Defined | 2026-05-13 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $75,958 | 0.16% | 115,265 | Shares | Defined | 2026-05-15 | ||||
| Mega MILLENNIUM MANAGEMENT LLC | $58,832 | 0.12% | 89,276 | Shares | Sole | 2026-05-15 | ||||
| Mega UBS Group AG | $36,225 | 0.08% | 54,970 | Shares | Defined | 2026-05-05 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $32,453 | 0.07% | 49,246 | Shares | Defined | 2026-05-08 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $21,477 | 0.05% | 32,591 | Shares | Defined | 2026-05-15 | ||||
| Mega STATE STREET CORP | $10,978 | 0.02% | 16,659 | Shares | Defined | 2026-05-15 | ||||
| Mega NORTHERN TRUST CORP Bank | $9,129 | 0.02% | 13,854 | Shares | Defined | 2026-05-14 | ||||
| Mid Tower Research Capital LLC (TRC) | $3,415 | 0.01% | 5,183 | Shares | Defined | 2026-05-15 | ||||
| Mega Vanguard Global Advisers, LLC | $1,137 | 0.00% | 1,726 | Shares | Defined | 2026-05-08 | ||||
| Mega MORGAN STANLEY | $133 | 0.00% | 203 | Shares | Defined | 2026-05-15 | ||||
| Mid Allworth Financial LP | $21 | 0.00% | 32 | Shares | Sole | 2026-05-15 | ||||
| Mid HARBOUR INVESTMENTS, INC. | $12 | 0.00% | 19 | Shares | Sole | 2026-05-15 | ||||
| Mega CITIGROUP INC | $0 | 0.00% | 1 | Shares | Defined | 2026-05-11 | ||||
| Mega WELLS FARGO & COMPANY/MN | $0 | 0.00% | 0 | Shares | Defined | 2026-05-11 | ||||
| No holders match your search. | ||||||||||