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CoStar Group

838 hedge funds and large institutions have $27.8B invested in CoStar Group in 2025 Q4 according to their latest regulatory filings, with 99 funds opening new positions, 273 increasing their positions, 383 reducing their positions, and 141 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

less ownership

Funds ownership:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

29% less repeat investments, than reductions

Existing positions increased: 273 | Existing positions reduced: 383

30% less first-time investments, than exits

New positions opened: 99 | Existing positions closed: 141

32% less funds holding in top 10

Funds holding in top 10: 2517 (-8)

Holders
838
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
17
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$207M
Puts
$111M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
AI
301
Atria Investments
North Carolina
$2.74M
TAF
302
Tredje AP-fonden
Sweden
$2.74M
PA
303
Profund Advisors
Maryland
$2.73M
MFAM
304
Motley Fool Asset Management
Virginia
$2.71M
Northwestern Mutual Wealth Management
305
Northwestern Mutual Wealth Management
Wisconsin
$2.68M
OSAM
306
O'Shaughnessy Asset Management
Connecticut
$2.68M
OC
307
Oppenheimer & Co
New York
$2.68M
NB
308
Norinchukin Bank
Japan
$2.64M
SSA
309
Schonfeld Strategic Advisors
New York
$2.64M
SLAM
310
Swiss Life Asset Management
$2.63M
Janney Montgomery Scott
311
Janney Montgomery Scott
Pennsylvania
$2.63M
IMCOOI
312
Investment Management Corp of Ontario (IMCO)
Canada
$2.61M
NSAM
313
North Star Asset Management
Wisconsin
$2.59M
Cambridge Investment Research Advisors
314
Cambridge Investment Research Advisors
Iowa
$2.54M
KC
315
Katamaran Capital
United Kingdom
$2.46M
QIM
316
Quantitative Investment Management
Virginia
$2.4M
BWG
317
Boomfish Wealth Group
Georgia
$2.32M
WAM
318
Weiss Asset Management
Massachusetts
$2.31M
ECM
319
EagleClaw Capital Management
Massachusetts
$2.3M
FG
320
Formula Growth
Quebec, Canada
$2.29M
AC
321
Allstate Corporation
Illinois
$2.28M
DADC
322
D.A. Davidson & Co
Montana
$2.26M
Nisa Investment Advisors
323
Nisa Investment Advisors
Missouri
$2.25M
SC
324
Scotia Capital
Ontario, Canada
$2.24M
LRPA
325
L. Roy Papp & Associates
Arizona
$2.24M