7 institutions reported holding $949,189 of M3, Inc. Unsponsored ADR (MTHRY) in SEC 13F filings for 2026-03-31. Largest institutional holders: Sterling Capital Management LLC ($568,522), RIVERBRIDGE PARTNERS LLC ($113,008), RHUMBLINE ADVISERS ($99,422), GAMMA Investing LLC ($92,032), PNC Financial Services Group, Inc. ($74,869). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Sterling Capital Management LLC | $568,522 | 112,670 | Added |
| 2 | RIVERBRIDGE PARTNERS LLC | $113,008 | 22,202 | New |
| 3 | RHUMBLINE ADVISERS | $99,422 | 19,535 | Added |
| 4 | GAMMA Investing LLC | $92,032 | 18,081 | Trimmed |
| 5 | PNC Financial Services Group, Inc. | $74,869 | 14,709 | Added |
| 6 | Salomon & Ludwin, LLC | $1,336 | 259 | Trimmed |
| 7 | Ancora Advisors LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31