| 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 | — | 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 | — | 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 | — | 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 | — | 0.000% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in MDIA — a direct measure of their conviction.
| 54.28% |
| 32.49 pp |
| $43M |
| 0.2% |
| Q4 2024 | 19 | 27% | 86.77% | +38.29 pp | $43M | 12% |
| Q3 2024 | 26 | — | 48.48% | — | $49M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
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