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CoStar Group
CSGP

903 hedge funds and large institutions have $34.9B invested in CoStar Group in 2025 Q3 according to their latest regulatory filings, with 108 funds opening new positions, 361 increasing their positions, 314 reducing their positions, and 63 closing their positions.

New
Increased
Maintained
Reduced
Closed

144% more call options, than puts

Call options by funds: $199M | Put options by funds: $81.5M

71% more first-time investments, than exits

New positions opened: 108 | Existing positions closed: 63

15% more repeat investments, than reductions

Existing positions increased: 361 | Existing positions reduced: 314

4% more funds holding

Funds holding: 871 → 903 (+32)

2% more capital invested

Capital invested by funds: $34.2B → $34.9B (+$698M)

3.07% less ownership

Funds ownership: 100.7% → 97.63% (-3.1%)

4% less funds holding in top 10

Funds holding in top 10: 26 → 25 (-1)

Holders
903
Holders Change
+32
Holders Change %
+3.67%
% of All Funds
11.85%
Holding in Top 10
25
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-3.85%
% of All Funds
0.33%
New
108
Increased
361
Reduced
314
Closed
63
Calls
$199M
Puts
$81.5M
Net Calls
+$117M
Net Calls Change
+$34.8M

Top Buyers

1
N
Nuveen
North Carolina
+$214M
2
Janus Henderson Group
Janus Henderson Group
United Kingdom
+$193M
3
Citadel Advisors
Citadel Advisors
Florida
+$150M
4
Vanguard Group
Vanguard Group
Pennsylvania
+$107M
5
Morgan Stanley
Morgan Stanley
New York
+$100M

Top Sellers

1
Capital International Investors
Capital International Investors
California
-$710M
2
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
-$264M
3
Bank of America
Bank of America
North Carolina
-$126M
4
Viking Global Investors
Viking Global Investors
Connecticut
-$121M
5
SCM
SG Capital Management
Illinois
-$74.7M
Name Holding Trade Value Shares
Change 		Change in
Stake
DF
801
Dunhill Financial
United Kingdom
$9.47K – – –
WA
802
Westfuller Advisors
New York
$9.28K +$9.72K +110 New
CTC
803
Central Trust Company
Missouri
$9.11K -$77.2K -874 -89%
JWA
804
JFS Wealth Advisors
Pennsylvania
$8.69K – – –
EDRH
805
Edmond de Rothschild Holding
Switzerland
$8.61K – – –
CWP
806
Concord Wealth Partners
Virginia
$8.44K – – –
FUBT
807
First United Bank & Trust
Maryland
$8.44K – – –
OCM
808
Orion Capital Management
California
$8.44K – – –
ST
809
Smithfield Trust
Pennsylvania
$8K – – –
DWM
810
Dogwood Wealth Management
Kansas
$7.93K +$619 +7 +8%
MIM
811
MTM Investment Management
South Carolina
$7.85K – – –
HHMI
812
Howard Hughes Medical Institute
Maryland
$7.68K – – –
WB
813
Webster Bank
Connecticut
$7.42K – – –
MAFA
814
MJT & Associates Financial Advisory
Minnesota
$6.83K -$88 -1 -1%
RS
815
Rakuten Securities
Japan
$6.75K +$1.68K +19 +31%
TCM
816
TruNorth Capital Management
Michigan
$6.67K +$6.98K +79 New
PWA
817
Principia Wealth Advisory
Texas
$6.58K +$4.86K +55 +239%
HWA
818
Heritage Wealth Advisors
Virginia
$6.41K – – –
MSWA
819
Marshall & Sterling Wealth Advisors
New York
$6.33K -$25.4K -287 -79%
KG
820
Kilter Group
New York
$6.33K -$3.54K -40 -35%
TCOV
821
Trust Company of Vermont
Vermont
$6.33K – – –
AW
822
Avion Wealth
Texas
$6K +$177 +2 +3%
GA
823
Guerra Advisors
Florida
$5.82K +$6.1K +69 New
CA
824
CoreCap Advisors
Michigan
$5.48K +$1.94K +22 +51%
DIP
825
DT Investment Partners
Pennsylvania
$5.23K – – –
31 32
33
34 35

CSGP Hedge Fund Activity: Q3 2025 in Review

903 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in CoStar Group (CSGP) for Q3 2025, worth a combined $34.9B — up 2% from $34.2B a quarter earlier.

Buyers outnumbered sellers: 108 funds opened new CSGP positions and 63 closed out — a net gain of 45 holders — while 361 added to existing stakes and 314 trimmed.

The largest buyer was Nuveen, adding an estimated $214M. The largest seller was Capital International Investors, cutting an estimated $710M.

  • 903 institutional investors held CoStar Group (CSGP) as of Q3 2025, up from 871 in Q2 2025.
  • Funds reported $34.9B of CoStar Group stock for Q3 2025, up 2% quarter-over-quarter.
  • 108 funds opened new CoStar Group positions in Q3 2025 and 63 closed out, a net change of +45 holders.
  • The largest CoStar Group buyer in Q3 2025 was Nuveen, an estimated $214M added.
  • The largest CoStar Group seller in Q3 2025 was Capital International Investors, an estimated $710M sold.

Based on aggregated 13F filings for Q3 2025.