Mediaco Holding Inc. Class AMDIA
13F holders, Q3 2025 (September 30)At the end of Q3 2025, 15 institutions reported holding Mediaco Holding Inc. Class A (MDIA) in their 13F filings, down 2 from Q2 2025. 2 opened new positions and 2 sold out. The largest holders were Standard General L.P. ($45.0M), BlackRock, Inc. ($44.8M) and JPMorgan Chase & Co. ($2.5M). 2 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Mediaco Holding Inc. Class A
- CUSIP
- 58450D104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $2.5M |
| Exits | 2 | $580 |
All 13F filers, Q2 2025 → Q3 2025: 37,356,555 shares bought and 2,136,447 shares sold, net +35,220,108 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 15 holders
| Standard General L.P. | 10.81% | Reduce -5.6% | 35,426,400 | $45.0M |
| BlackRock, Inc. | 0.00% | Add +129613.5% | 35,284,678 | $44.8M |
| JPMorgan Chase & Co. | 0.00% | New | 1,937,881 | $2.5M |
| Geode Capital Management, LLC | 0.00% | Add +59.7% | 116,656 | $148K |
| Millennium Management | 0.00% | Reduce -20.9% | 114,032 | $145K |
| UBS Group AG | 0.00% | Add +117.0% | 90,400 | $115K |
| Vanguard Group Inc. | 0.00% | Add +70.0% | 83,563 | $106K |
| Citadel Advisors | 0.00% | New | 32,354 | $41K |
| State Street Corp. | 0.00% | No change | 16,659 | $21K |
| Northern Trust Corp. | 0.00% | No change | 13,854 | $18K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +89.2% | 4,323 | $5K |
| Bank of America Corp. | 0.00% | Add +76.7% | 129 | $164 |
| Allworth Financial LP | 0.00% | No change | 32 | $41 |
| Harbour Investments, Inc. | 0.00% | No change | 19 | $24 |
| Morgan Stanley | 0.00% | No change | 3 | $4 |
"% of holder's portfolio" is MDIA's weight in each manager's 13F, not the share of Mediaco Holding Inc. Class A the manager owns.