OMC Omnicom Group, Inc.
Omnicom Group, Inc. (OMC) Institutional Ownership
What the institutions did with OMC last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| FIRST FINANCIAL BANK - TRUST DIVISION | 12.7K | 34.3% |
| ROCKLAND TRUST CO | 6.8K | 18.5% |
| CX Institutional | 5.0K | 13.5% |
| EASTERN BANK | 3.1K | 8.4% |
| Montecito Bank & Trust | 2.9K | 7.9% |
| Rosenberg Matthew Hamilton | 2.0K | 5.4% |
| TOMPKINS FINANCIAL CORP | 1.5K | 4.0% |
| Versant Capital Management, Inc | 1.3K | 3.6% |
| MassMutual Private Wealth & Trust, FSB | 1.1K | 3.1% |
| Planning Strategies Inc. | 249 | 0.7% |
| Central Pacific Bank - Trust Division | 119 | 0.3% |
| General Partner, Inc. | 90 | 0.2% |
| Roxbury Financial LLC | 24 | 0.1% |
| GoalVest Advisory LLC | 12 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Central Pacific Bank - Trust Division | Reduced | 4.3K | 119 | -4.2K |
| ROCKLAND TRUST CO | Reduced | 7.3K | 6.8K | -450 |
| CX Institutional | Reduced | 5.3K | 5.0K | -372 |
| Versant Capital Management, Inc | Reduced | 1.6K | 1.3K | -256 |
| Montecito Bank & Trust | Reduced | 3.0K | 2.9K | -65 |
| TOMPKINS FINANCIAL CORP | Reduced | 1.5K | 1.5K | -58 |
| GoalVest Advisory LLC | Reduced | 37 | 12 | -25 |
| Rosenberg Matthew Hamilton | Reduced | 2.0K | 2.0K | -13 |
| MassMutual Private Wealth & Trust, FSB | Reduced | 1.2K | 1.1K | -13 |
| Planning Strategies Inc. | Increased | 247 | 249 | +2 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.