Costar Group, Inc. (CSGP) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

419,900,000Shares Outstanding

412,027,336Shares held by institutions

$16,031,983,644Value of institutional holdings

98.13%Institutional ownership %

0.56%Shares Changed QoQ

823No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Costar Group, Inc. (NASDAQ:CSGP) has 822 institutional investors with active 13F positions as of December 2025.

Their combined ownership stood at 97.0% of outstanding shares in December 2025, down from 99.4% in September 2025.
They increased total shares held in Costar by 0.26% from the prior quarter, while the number of investors in CSGP increased 4.58% year over year.
Of these 822 holders, 367 added to their stakes in Costar, 373 trimmed positions, and 82 made no changes.
Institutional investors collectively held 407.28Mn shares in Costar as of December 2025, up by 1.07Mn shares quarter on quarter, and down 10.53Mn shares year over year.
Hilltop National Bank leads ownership in CSGP with 380 shares as of December 31, 2025, equal to 0.0% of outstanding shares.
The largest buyers of Costar for the quarter ending December 2025 were Hilltop National Bank (380).
Per Business Quant data, the top 2 holders of Costar for the quarter ending December 2025 are Hilltop National Bank (380), Aspect Partners, LLC (17).

823 Institutional Holders

412,027,336 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	70,108,999	52,558	0.08%	$4,714,129,093.00
BlackRock, Inc.	31 Dec, 2025	33,970,626	-2,162,532	-5.98%	$2,284,184,864.00
BAMCO INC /NY/	31 Dec, 2025	19,498,099	242,533	1.26%	$1,311,052,177.00
State Street Corp	31 Dec, 2025	18,632,352	348,224	1.90%	$1,252,839,348.00
Principal Financial Group Inc	31 Dec, 2025	17,566,074	-1,057,296	-5.68%	$1,181,146,072.00
BAILLIE GIFFORD & CO	31 Dec, 2025	12,933,185	4,691,543	56.92%	$869,627,359.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	12,182,167	-419,288	-3.33%	$816,237,290.00
Capital International Investors	31 Dec, 2025	10,842,010	4,053,456	59.71%	$729,019,965.00
AKRE CAPITAL MANAGEMENT LLC	31 Dec, 2025	9,617,805	311,320	3.35%	$646,701,208.00
Goldman Sachs Group Inc	31 Dec, 2025	7,502,840	5,307,628	241.78%	$504,490,984.00
Janus Henderson Group Plc	31 Dec, 2025	7,473,380	1,256,573	20.21%	$502,487,485.00
NORGES BANK	31 Dec, 2025	7,090,495	7,090,495	0.00%	$476,764,884.00
T. Rowe Price Investment Management, Inc.	31 Dec, 2025	5,719,251	2,208,727	62.92%	$384,563.00
Capital Research Global Investors	31 Dec, 2025	5,566,962	573,108	11.48%	$374,328,936.00
Invesco Ltd.	31 Dec, 2025	5,387,056	849,713	18.73%	$362,225,646.00
Morgan Stanley	31 Dec, 2025	5,291,136	-3,251,888	-38.06%	$355,776,152.00
POLEN CAPITAL MANAGEMENT LLC	31 Dec, 2025	4,890,936	-1,489,973	-23.35%	$328,866,546.00
Vulcan Value Partners, LLC	31 Dec, 2025	4,485,021	653,412	17.05%	$301,527.00
MIZUHO MARKETS AMERICAS LLC	31 Dec, 2025	4,416,116	-707,100	-13.80%	$296,939,640.00
Amundi	31 Dec, 2025	4,114,516	979,380	31.24%	$276,660,055.00

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