CNSWF Institutional Ownership & Shareholders
CONSTELLATION SOFTWARE INC (CNSWF) is currently held by 14 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $11.53M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
O'Brien Greene & Co. Inc is currently the largest disclosed institutional shareholder of CNSWF tracked by InsiderSet, reporting ownership valued at approximately $6.44M in its June 30, 2026 SEC Form 13F filing.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed CNSWF value among the investors covered in this analysis. Major shareholders include O'Brien Greene & Co. Inc, Lountzis Asset Management, Df Dent & Co Inc, and several other long-term asset managers with concentrated positions in CONSTELLATION SOFTWARE INC (CNSWF).
This page ranks the largest institutional CNSWF shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
14
Total Reported Value
$11.53M
Largest Holder
O'Brien Greene & Co. Inc
Largest Position
$6.44M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
22
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| O'Brien Greene & Co. Inc | 1.78% | 3,411 | $6,439,968 | — | — | — | |
| Lountzis Asset Management | Paul Lountzis | 0.38% | 569 | $1,154,069 | — | — | — |
| Df Dent & Co Inc | 0.02% | 573 | $1,081,824 | — | — | — | |
| Mcilrath & Eck, Llc | 0.06% | 483 | $845,263 | — | — | — | |
| Atlas Capital Advisors Inc. | 0.09% | 427 | $806,176 | — | — | — | |
| Ancora Advisors Llc | 0.01% | 321 | $604,103 | — | — | — | |
| Cardinal Capital Management, Inc. | 0.01% | 132 | $269,193 | — | — | — | |
| Studio Investment Management Llc | 0.04% | 113 | $229,187 | — | — | — | |
| Gamma Investing Llc | 0.00% | 20 | $40,545 | — | — | — | |
| Ascentis Wealth Management, Llc | 0.00% | 10 | $20,391 | — | — | — | |
| Mn Services Vermogensbeheer B.V. | 0.09% | 5,967 | $12,166 | — | — | — | |
| Sterling Capital Management Llc | 0.00% | 4 | $8,109 | — | — | — | |
| Pnc Financial Services Group, Inc. | 0.00% | 4 | $7,528 | — | — | — | |
| Appleton Partners Inc/Ma | 0.44% | 3,536 | $7,168 | — | — | — |
Frequently asked questions about CNSWF
Who are the largest institutional holders of CNSWF?
The largest institutional holders of CNSWF reported in the latest SEC Form 13F filings include O'Brien Greene & Co. Inc, Lountzis Asset Management, Df Dent & Co Inc, Mcilrath & Eck, Llc, and Atlas Capital Advisors Inc.. InsiderSet ranks institutional holders by their latest reported CNSWF position.
What is CNSWF institutional ownership?
This page tracks CNSWF positions reported by institutional investment managers through SEC Form 13F. CONSTELLATION SOFTWARE INC (CNSWF) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own CNSWF?
InsiderSet currently tracks 14 institutional managers reporting CNSWF holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of CNSWF shareholders.
How much CNSWF stock do institutions own?
Institutional investment managers disclosed approximately $11.53M in CNSWF holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was CNSWF institutional ownership last updated?
The latest CNSWF institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional CNSWF holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its CNSWF position after the reporting date.
Are institutions buying or selling CNSWF?
Institutional buying and selling can be analyzed by comparing CNSWF positions across consecutive 13F reporting periods. InsiderSet's CNSWF Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View CNSWF ownership changes.
How has CNSWF institutional ownership changed over time?
InsiderSet tracks CNSWF institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.