CNSWF Constellation Software Inc.

$2,175.00

Constellation Software Inc. (CNSWF) Institutional Ownership

What the institutions did with CNSWF 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 June 30, 2026.

Managers compared
13
filed both this quarter and last
Managers holding
13
+2 on the quarter
Buyers
6
2 opened new
Sellers
3
0 sold out entirely
Buyer share
66.7%
of managers who traded it
Breadth
+33.3
net buyers, as a share of those trading

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Ownership map

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.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
Mn Services Vermogensbeheer B.V. 5.9K 36.2%
O'Brien Greene & Co. Inc 3.4K 21.1%
APPLETON PARTNERS INC/MA 3.2K 19.5%
Bretton Capital Management, LLC 2.1K 13.0%
DF DENT & CO INC 573 3.5%
ATLAS CAPITAL ADVISORS INC. 427 2.6%
Ancora Advisors LLC 321 2.0%
LOUNTZIS ASSET MANAGEMENT, LLC 285 1.8%
KELLEHER FINANCIAL ADVISORS 24 0.1%
GAMMA Investing LLC 17 0.1%
Ascentis Wealth Management, LLC 10 0.1%
PNC FINANCIAL SERVICES GROUP, INC. 4 0.0%
Sterling Capital Management LLC 4 0.0%

Largest changes

Manager Action Previous Current Change
O'Brien Greene & Co. Inc Increased 963 3.4K +2.4K
Bretton Capital Management, LLC New 0 2.1K +2.1K
Mn Services Vermogensbeheer B.V. Reduced 7.8K 5.9K -1.9K
APPLETON PARTNERS INC/MA Increased 2.3K 3.2K +883
ATLAS CAPITAL ADVISORS INC. Increased 2 427 +425
KELLEHER FINANCIAL ADVISORS Increased 12 24 +12
Ancora Advisors LLC Reduced 329 321 -8
GAMMA Investing LLC Reduced 23 17 -6
Sterling Capital Management LLC New 0 4 +4

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.