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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
AAM
451
Azzad Asset Management
Virginia
$464K
MMA
452
Miracle Mile Advisors
California
$463K
PP
453
Postrock Partners
Oregon
$461K
SAM
454
Securian Asset Management
Minnesota
$461K
VWM
455
Venturi Wealth Management
Texas
$457K
QT
456
Quantbot Technologies
New York
$446K
KRSITF
457
Kentucky Retirement Systems Insurance Trust Fund
Kentucky
$443K
BC
458
Bridgefront Capital
Texas
$436K
IIM
459
INTECH Investment Management
Florida
$436K
Baird Financial Group
460
Baird Financial Group
Wisconsin
$433K
GC
461
Gilbert & Cook
Iowa
$431K
AFG
462
Atomi Financial Group
New York
$431K
WI
463
Wahed Invest
New York
$429K
UCFA
464
United Capital Financial Advisors
Texas
$426K
CM
465
Capula Management
Cayman Islands
$421K
AAP
466
Arax Advisory Partners
Colorado
$420K
JFG
467
Jefferies Financial Group
New York
$415K
AWP
468
Accretive Wealth Partners
New Jersey
$413K
PIA
469
Perennial Investment Advisors
California
$410K
PGFC
470
Peapack-Gladstone Financial Corp
New Jersey
$406K
1C
471
111 Capital
France
$404K
GBT
472
Grove Bank & Trust
Florida
$403K
CAM
473
Cresset Asset Management
Illinois
$402K
MF
474
Magnetar Financial
Illinois
$400K
PCP
475
Perbak Capital Partners
United Kingdom
$400K