Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in MDIA held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Standard General L.P. | 35.4M | $34.9M | 0.0% | 46.062% | 7.27% |
| 2 | BlackRock, Inc. | 35.3M | $34.8M | 0.0% | 45.877% | 0.00% |
| 3 | GEODE CAPITAL MANAGEMENT, LLC | 96K | $95K | -16.4% | 0.125% | 0.00% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 71K | $70K | +116.3% | 0.092% | 0.00% |
| 5 | MILLENNIUM MANAGEMENT LLC | 62K | $61K | -30.4% | 0.081% | 0.00% |
| 6 | VANGUARD FIDUCIARY TRUST CO | 49K | $49K | 0.0% | 0.064% | 0.00% |
| 7 | CITADEL ADVISORS LLC | 28K | $28K | β | 0.037% | 0.00% |
| 8 | NORTHERN TRUST CORP | 18K | $18K | +31.9% | 0.024% | 0.00% |
| 9 | STATE STREET CORP | 17K | $16K | 0.0% | 0.022% | 0.00% |
| 10 | XTX Topco Ltd | 10K | $10K | β | 0.013% | 0.00% |
| 11 | Tower Research Capital LLC (TRC) | 7K | $7K | +27.3% | 0.009% | 0.00% |
| 12 | Vanguard Global Advisers, LLC | 2K | $2K | 0.0% | 0.002% | 0.00% |
| 13 | ROYAL BANK OF CANADA | 1K | $1K | β | 0.001% | 0.00% |
| 14 | UBS Group AG | 231 | $228 | -99.6% | 0.000% | 0.00% |
| 15 | MORGAN STANLEY | 200 | $197 | -1.5% | 0.000% | 0.00% |
| 16 | Allworth Financial LP | 32 | $32 | 0.0% | 0.000% | 0.00% |
| 17 | HARBOUR INVESTMENTS, INC. | 19 | $19 | 0.0% | 0.000% | 0.00% |
| 18 | JPMORGAN CHASE & CO | 3 | $3 | -100.0% | 0.000% | 0.00% |
| 19 | WELLS FARGO & COMPANY/MN | 0 | $0 | β | 0.000% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in MDIA β a direct measure of their conviction.
Filings activity in MDIA during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 19 | +12% | 92.41% | 0.52 pp | $70M | +49% |
| Q1 2026 | 17 | +13% | 92.93% | 3.96 pp | $47M | +12% |
| Q4 2025 | 15 | +0.0% | 96.89% | +1.88 pp | $42M | 55% |
| Q3 2025 | 15 | 17% | 95.01% | +35.13 pp | $93M | +90% |
| Q2 2025 | 18 | +0.0% | 59.88% | +5.60 pp | $49M | +13% |
| Q1 2025 | 18 | 5.3% | 54.28% | 32.49 pp | $43M | 0.2% |
| Q4 2024 | 19 | 27% | 86.77% | +38.29 pp | $43M | 12% |
| Q3 2024 | 26 | β | 48.48% | β | $49M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MDIA stock.
Based on Q2 2026 13F filings, institutional ownership of MediaCo Holding Inc. stands at 92.4%, held across 19 reporting institutions.
Standard General L.P. is the largest reported institutional holder of MDIA, with approximately 35,426,400 shares worth $0.03B as of Q2 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of MDIA, including MILLENNIUM MANAGEMENT LLC, CITADEL ADVISORS LLC.
Our composite Smart Money Score for MDIA is 58 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
3 institutions opened new positions in MDIA during Q2 2026, while 1 fully exited. 13 added to existing positions and 2 trimmed.
MDIA institutional ownership fell by 0.52 percentage points quarter-over-quarter, with a net change of +2 holders.
The top 10 institutions account for 100.0% of all reported 13F value in MDIA, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
MediaCo Holding Inc. (MDIA) Institutional Ownership