CoStar Group Inc.

CSGP | NASDAQ

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$28.63

-$0.41 (-1.41%)

Sep 22, 2026, 11:49 AM ET · Market open

Overview Rating Statistics Financials Earnings Analysts Ownership Profile

Institutions Insiders Congress

Institutional Ownership

Net Outflow

Dollar & Volume Weighted

Total Institutions

832

Total Ownership

98.98%

Capital Flow

-$11.55B

Shares Change

-8.52M

Ownership Distribution

Institutions (98.98%)

Others (1.02%)

Institutional Sentiment

Overall: bullish

Equity Sentiment & Activity

bullish

New Positions

132

Increased Positions

442

Reduced Positions

277

Closed Positions

192

New (132)

Increased (442)

Reduced (277)

Closed (192)

Options Sentiment & Activity

bullish

Put/Call Ratio

0.324

Call Flow

2,639,444

Put Flow

855,500

Calls (76%)

Puts (24%)

Super Investors

7 Investors

Super Investor / Fund	Ownership	Portfolio Weight	Shares	Market Value
Joel Greenblatt Gotham Asset Management LLC	0.15% +42.27%	0.04%	635.99K	18.47M
Steven Cohen Point72 Asset Management LP	0.03% 0.00%	< 0.01%	130.62K	3.79M
Mark Hillman Hillman Capital Management Inc.	< 0.01% +25.57%	0.22%	10.75K	312.03K

Top Shareholders

Top 10 Own 49.94%

Institution	Ownership	Portfolio Weight	Shares	Market Value
Vanguard Portfolio Management LLC	9.26% +100.00%	0.08% +100.00%	38.23M +100.00%	1.54B +100.00%
Blackrock, Inc.	8.19% +0.53%	0.02% -38.28%	33.81M -0.48%	1.36B -40.29%
Vanguard Capital Management LLC	6.64% +100.00%	0.03% +100.00%	27.42M +100.00%	1.11B +100.00%

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