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CoStar Group

889 hedge funds and large institutions have $34.8B invested in CoStar Group in 2025 Q3 according to their latest regulatory filings, with 105 funds opening new positions, 355 increasing their positions, 310 reducing their positions, and 63 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

2% more capital invested

Capital invested by funds: $34.2B → $34.8B (+$682M)

3.13% less ownership

Funds ownership: 100.67%97.54% (-3.1%)

4% less funds holding in top 10

Funds holding in top 10: 2625 (-1)

Holders
889
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
25
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$199M
Puts
$81.5M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
MF
501
Magnetar Financial
Illinois
$833K
TCWA
502
Turtle Creek Wealth Advisors
Texas
$833K
DTL
503
Dynamic Technology Lab
Singapore
$820K
Kovitz Investment Group Partners
504
Kovitz Investment Group Partners
Illinois
$814K
RWM
505
Ritholtz Wealth Management
New York
$813K
IA
506
Integrity Alliance
Iowa
$807K
HBT
507
Hills Bank & Trust
Iowa
$802K
SWP
508
Stratos Wealth Partners
Ohio
$786K
BFA
509
Buttonwood Financial Advisors
Maryland
$780K
NAS
510
Nicolet Advisory Services
Wisconsin
$777K
AP
511
Americana Partners
Texas
$774K
SAM
512
Smartleaf Asset Management
Massachusetts
$769K
COI
513
Connable Office Inc
Michigan
$759K
SAM
514
Stansberry Asset Management
Texas
$748K
Walleye Trading
515
Walleye Trading
New York
$741K
SC
516
Sapient Capital
Indiana
$739K
CG
517
Caprock Group
Idaho
$732K
DT
518
Diversified Trust
Tennessee
$724K
PP
519
Patten & Patten
Tennessee
$722K
EF
520
Empirical Finance
Pennsylvania
$720K
EFG
521
Everhart Financial Group
Ohio
$713K
LOAMS
522
Lombard Odier Asset Management (Switzerland)
Switzerland
$710K
SCA
523
Snowden Capital Advisors
New York
$691K
MSE
524
MUFG Securities EMEA
United Kingdom
$684K
SWM
525
Spire Wealth Management
Virginia
$684K