8 institutions reported holding $12.0M of Sompo Holdings Inc (SMPNY) in SEC 13F filings for 2026-06-30. Largest institutional holders: GREAT LAKES ADVISORS, LLC ($7.1M), Ativo Capital Management LLC ($2.1M), CHICAGO TRUST Co NA ($998,814), RHUMBLINE ADVISERS ($889,944), Sterling Capital Management LLC ($752,168). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GREAT LAKES ADVISORS, LLC | $7.1M | 371,016 | Added |
| 2 | Ativo Capital Management LLC | $2.1M | 109,247 | Trimmed |
| 3 | CHICAGO TRUST Co NA | $998,814 | 52,046 | Added |
| 4 | RHUMBLINE ADVISERS | $889,944 | 46,546 | Added |
| 5 | Sterling Capital Management LLC | $752,168 | 39,194 | Added |
| 6 | GAMMA Investing LLC | $151,450 | 7,921 | Added |
| 7 | Salomon & Ludwin, LLC | $25,833 | 1,316 | Added |
| 8 | PNC Financial Services Group, Inc. | $8,222 | 430 | Added |
Source: SEC Form 13F filings · as of 2026-06-30