20 institutions reported holding $24.0M of Constellation Software Inc/Canada (CNSWF) in SEC 13F filings for 2026-03-31. Largest institutional holders: Mn Services Vermogensbeheer B.V. ($13.6M), APPLETON PARTNERS INC/MA ($4.0M), BALLAST ADVISORS LLC ($1.7M), O'Brien Greene & Co. Inc ($1.7M), DF DENT & CO INC ($1.0M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Mn Services Vermogensbeheer B.V. | $13.6M | 7,767 | Hold |
| 2 | APPLETON PARTNERS INC/MA | $4.0M | 2,276 | Trimmed |
| 3 | BALLAST ADVISORS LLC | $1.7M | 976 | New |
| 4 | O'Brien Greene & Co. Inc | $1.7M | 963 | Added |
| 5 | DF DENT & CO INC | $1.0M | 573 | Trimmed |
| 6 | McIlrath & Eck, LLC | $845,263 | 483 | New |
| 7 | Ancora Advisors LLC | $575,698 | 636 | Trimmed |
| 8 | LOUNTZIS ASSET MANAGEMENT, LLC | $500,585 | 285 | Hold |
| 9 | GAMMA Investing LLC | $40,463 | 23 | Trimmed |
| 10 | KELLEHER FINANCIAL ADVISORS | $21,000 | 12 | Hold |
| 11 | ORG Wealth Partners, LLC | $17,500 | 23 | New |
| 12 | PNC Financial Services Group, Inc. | $6,999 | 4 | Trimmed |
| 13 | ATLAS CAPITAL ADVISORS INC. | $3,510 | 2 | Hold |
| 14 | VICTORY CAPITAL MANAGEMENT INC | $0 | 0 | Exited |
| 15 | Torray Investment Partners LLC | $0 | 0 | Exited |
| 16 | HighPoint Advisor Group LLC | $0 | 0 | Exited |
| 17 | STUDIO INVESTMENT MANAGEMENT LLC | $0 | 0 | Exited |
| 18 | BECK MACK & OLIVER LLC | $0 | 0 | Exited |
| 19 | Steigerwald, Gordon & Koch Inc. | $0 | 0 | Exited |
| 20 | KIRTLAND HILLS CAPITAL MANAGEMENT, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31