6 institutions reported holding $918,694 of M3, Inc. Unsponsored ADR (MTHRY) in SEC 13F filings for 2026-06-30. Largest institutional holders: Sterling Capital Management LLC ($588,499), RIVERBRIDGE PARTNERS LLC ($122,555), GAMMA Investing LLC ($122,329), PNC Financial Services Group, Inc. ($84,285), RHUMBLINE ADVISERS ($1,026). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Sterling Capital Management LLC | $588,499 | 105,394 | Trimmed |
| 2 | RIVERBRIDGE PARTNERS LLC | $122,555 | 22,202 | Hold |
| 3 | GAMMA Investing LLC | $122,329 | 22,161 | Added |
| 4 | PNC Financial Services Group, Inc. | $84,285 | 15,269 | Added |
| 5 | RHUMBLINE ADVISERS | $1,026 | 186 | Trimmed |
| 6 | Salomon & Ludwin, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30