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CoStar Group

786 hedge funds and large institutions have $16.4B invested in CoStar Group in 2026 Q1 according to their latest regulatory filings, with 126 funds opening new positions, 306 increasing their positions, 272 reducing their positions, and 166 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less funds holding

Funds holding:

24% less first-time investments, than exits

New positions opened: 126 | Existing positions closed: 166

41% less capital invested

Capital invested by funds: $27.8B → $16.4B (-$11.3B)

59% less funds holding in top 10

Funds holding in top 10: 177 (-10)

Holders
786
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
7
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$142M
Puts
$39.3M
Net Calls
Net Calls Change

Top Sellers

1 -$302M
2 -$233M
3 -$216M
4
TP
Third Point
New York
-$213M
5
BAMCO Inc
BAMCO Inc
New York
-$166M
Name Holding Trade Value Shares
Change
Change in
Stake
NICM
476
Neo Ivy Capital Management
New York
$399K
Capstone Investment Advisors
477
Capstone Investment Advisors
New York
$388K
TSS
478
Two Sigma Securities
New York
$388K
NB
479
Nicolet Bankshares
Wisconsin
$388K
BHCM
480
Brevan Howard Capital Management
Jersey
$383K
HBT
481
Hills Bank & Trust
Iowa
$381K
AWAU
482
Alliance Wealth Advisors (Utah)
Utah
$379K
PFM
483
Potomac Fund Management
Florida
$379K
DC
484
Davenport & Co
Virginia
$375K
LNWTC
485
Laird Norton Wetherby Trust Company
Washington
$371K
BPA
486
Beacon Pointe Advisors
California
$366K
WA
487
Wealth Alliance
New York
$365K
COI
488
Connable Office Inc
Michigan
$363K
CG
489
Caprock Group
Idaho
$362K
GI
490
GAMMA Investing
California
$362K
VI
491
Vestcor Inc
New Brunswick, Canada
$361K
PP
492
Patten & Patten
Tennessee
$353K
VFA
493
Voya Financial Advisors
Connecticut
$349K
Assenagon Asset Management
494
Assenagon Asset Management
Luxembourg
$347K
PIM
495
Plato Investment Management
Australia
$346K
HCM
496
Hillman Capital Management
Maryland
$345K
SL
497
Sentinus LLC
Illinois
$341K
FPAS
498
Focus Partners Advisor Solutions
Missouri
$337K
IWC
499
Integrated Wealth Concepts
Massachusetts
$334K
EF
500
Empirical Finance
Pennsylvania
$332K