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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
TG
526
TCW Group
California
$266K
CCM
527
Coldstream Capital Management
Washington
$264K
SB
528
SIG Brokerage
New York
$259K
SAI
529
Savvy Advisors Inc
New York
$258K
BOSSRA
530
B.O.S.S. Retirement Advisors
Utah
$257K
IWA
531
Icon Wealth Advisors
Texas
$256K
Balyasny Asset Management
532
Balyasny Asset Management
Illinois
$255K
Teacher Retirement System of Texas
533
Teacher Retirement System of Texas
Texas
$254K
CIBC World Market
534
CIBC World Market
Ontario, Canada
$254K
Vontobel Holding
535
Vontobel Holding
Switzerland
$254K
BWM
536
Baron Wealth Management
Michigan
$253K
VSQM
537
V-Square Quantitative Management
Illinois
$250K
BSL
538
Blue Sparrow LLC
Delaware
$248K
IAN
539
Integrated Advisors Network
Texas
$248K
BIG
540
Brooklyn Investment Group
New York
$247K
DKCM
541
Davidson Kahn Capital Management
California
$247K
PWM
542
Perigon Wealth Management
California
$246K
BTWM
543
Baker Tilly Wealth Management
Wisconsin
$245K
Rockefeller Capital Management
544
Rockefeller Capital Management
New York
$245K
PWMG
545
Prestige Wealth Management Group
New Jersey
$243K
BIM
546
Bridges Investment Management
Nebraska
$242K
GS
547
GTS Securities
New York
$241K
RCA
548
Riverview Capital Advisers
Massachusetts
$241K
EPW
549
Evolve Private Wealth
California
$241K
SFI
550
Siemens Fonds Invest
Germany
$240K