CUSIP: 56624R108 | NYSE | Communication Services · Advertising Agencies | Micro Cap | 309 institutional holders
5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.
| Holder | Shares | % of Class | Change | Event Date | vs 13F |
|---|---|---|---|---|---|
| 13DRussell C. Horowitz | 8,813,485 | 18.5% | New 5%+ stake | Jul 1, 2026 | No 13F filer matched |
| Style | Turnover | Location | Filed | ||||
|---|---|---|---|---|---|---|---|
| 66,241 | $85.4K | 0.0% | Index | Low | Austin, TX | 2026-11-04 | |
| 64,000 | $82.6K | 0.0% | Core | Low | Hunt Valley, MD | 2026-10-23 | |
| 4 | $5 | 0.0% | Core | Medium | New York, NY | 2026-11-04 |