Who owns Constellation Software Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from SEC filings.
Institutional ownership of CNSWF from SEC Form 13F filings across 9 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 9 institutions disclosed 6,196 shares of Constellation Software Inc. worth $11.8M — about 0% of shares outstanding; the largest disclosed holder is O'Brien Greene & Co. Inc. Source: SEC Form 13F filings, parsed by EvidInvest.
9
13F holders
$11.8M
value, 2026 filers
0%
of shares outstanding (6,196 sh)
2
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of CNSWF's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | O'Brien Greene & Co. Inc | 3,411 | $6.4M | 1.8% | 0% | +254.2% |
| 2 | Bretton Capital Management, LLCNEW | 2,100 | $4.1M | 3.3% | 0% | new |
| 3 | Ancora Advisors LLC | 321 | $604,103 | 0.0% | 0% | -2.4% |
| 4 | LOUNTZIS ASSET MANAGEMENT, LLC | 285 | $538,365 | 0.2% | 0% | 0.0% |
| 5 | Ascentis Wealth Management, LLC | 30 | $56,463 | 0.0% | 0% | +200.0% |
| 6 | KELLEHER FINANCIAL ADVISORS | 24 | $45,171 | 0.0% | 0% | +100.0% |
| 7 | GAMMA Investing LLC | 17 | $32,096 | 0.0% | 0% | -26.1% |
| 8 | Sterling Capital Management LLCNEW | 4 | $7,552 | 0.0% | 0% | new |
| 9 | PNC Financial Services Group, Inc. | 4 | $7,528 | 0.0% | 0% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.