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CoStar Group

791 hedge funds and large institutions have $16.4B invested in CoStar Group in 2026 Q1 according to their latest regulatory filings, with 125 funds opening new positions, 307 increasing their positions, 276 reducing their positions, and 164 closing their positions.

New
Increased
Maintained
Reduced
Closed

262% more call options, than puts

Call options by funds: $142M | Put options by funds: $39.3M

11% more repeat investments, than reductions

Existing positions increased: 307 | Existing positions reduced: 276

0.54% less ownership

Funds ownership: 97.52%96.98% (-0.54%)

7% less funds holding

Funds holding: 846791 (-55)

24% less first-time investments, than exits

New positions opened: 125 | Existing positions closed: 164

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
791
Holders Change
-55
Holders Change %
-6.5%
% of All Funds
9.74%
Holding in Top 10
7
Holding in Top 10 Change
-10
Holding in Top 10 Change %
-58.82%
% of All Funds
0.09%
New
125
Increased
307
Reduced
276
Closed
164
Calls
$142M
Puts
$39.3M
Net Calls
+$103M
Net Calls Change
+$7.38M
Name Holding Trade Value Shares
Change
Change in
Stake
Allianz Asset Management
351
Allianz Asset Management
Germany
$1.13M +$324K +6,226 +29%
DS
352
DRW Securities
Illinois
$1.12M +$1.15M +22,101 +390%
WWM
353
Waterway Wealth Management
Texas
$1.12M +$846K +16,246 +142%
GCP
354
GSA Capital Partners
United Kingdom
$1.09M +$1.4M +26,950 New
TSW
355
Three Seasons Wealth
Utah
$1.07M +$982K +18,858 +242%
EI
356
Ethic Inc
New York
$1.07M +$102K +1,955 +8%
HA
357
Harbor Advisors
Florida
$1.07M
Janney Montgomery Scott
358
Janney Montgomery Scott
Pennsylvania
$1.07M -$658K -12,636 -32%
PP
359
Prudential plc
United Kingdom
$1.05M
PEAK6
360
PEAK6
Illinois
$1.05M +$1.36M +26,037 New
MSU
361
Mizuho Securities USA
New York
$1.03M -$273K -5,238 -17%
GWM
362
Gibbs Wealth Management
Georgia
$1.03M +$792K +15,219 +149%
TI
363
Tidal Investments
Wisconsin
$999K +$295K +5,663 +30%
ECM
364
ExodusPoint Capital Management
New York
$988K -$5.98M -114,813 -82%
HIMCH
365
Hartford Investment Management Co (HIMCO)
Connecticut
$980K -$15K -289 -1%
STA
366
Summit Trail Advisors
New York
$959K +$486K +9,330 +65%
AA
367
ALPS Advisors
Colorado
$954K +$36K +691 +3%
CGH
368
Crossmark Global Holdings
Texas
$945K -$8.85K -170 -0.7%
KeyBank National Association
369
KeyBank National Association
Ohio
$935K +$353K +6,789 +41%
TVPW
370
Third View Private Wealth
Connecticut
$916K +$45.9K +881 +4%
AIM
371
Aurora Investment Managers
Florida
$895K -$5.99K -115 -0.5%
DEA
372
DoubleLine ETF Adviser
Florida
$891K -$281K -5,390 -20%
AV
373
ASR Vermogensbeheer
Netherlands
$885K +$18.7K +360 +2%
IP
374
Intellectus Partners
California
$879K +$804K +15,437 +243%
OAC
375
OMERS Administration Corp
Ontario, Canada
$872K +$236K +4,531 +27%