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CoStar Group

846 hedge funds and large institutions have $27.8B invested in CoStar Group in 2025 Q4 according to their latest regulatory filings, with 103 funds opening new positions, 274 increasing their positions, 386 reducing their positions, and 142 closing their positions.

New
Increased
Maintained
Reduced
Closed

86% more call options, than puts

Call options by funds: $207M | Put options by funds: $111M

0.11% less ownership

Funds ownership: 97.63%97.52% (-0.11%)

6% less funds holding

Funds holding: 903846 (-57)

20% less capital invested

Capital invested by funds: $34.9B → $27.8B (-$7.08B)

27% less first-time investments, than exits

New positions opened: 103 | Existing positions closed: 142

29% less repeat investments, than reductions

Existing positions increased: 274 | Existing positions reduced: 386

32% less funds holding in top 10

Funds holding in top 10: 2517 (-8)

Holders
846
Holders Change
-57
Holders Change %
-6.31%
% of All Funds
10.29%
Holding in Top 10
17
Holding in Top 10 Change
-8
Holding in Top 10 Change %
-32%
% of All Funds
0.21%
New
103
Increased
274
Reduced
386
Closed
142
Calls
$207M
Puts
$111M
Net Calls
+$95.6M
Net Calls Change
-$21.8M
Name Holding Trade Value Shares
Change
Change in
Stake
KIA
301
Knollwood Investment Advisory
Maryland
$2.81M
YCM
302
Yousif Capital Management
Michigan
$2.77M -$264K -3,728 -8%
LTAS
303
Linden Thomas Advisory Services
North Carolina
$2.74M -$170K -2,397 -6%
AI
304
Atria Investments
North Carolina
$2.74M -$1.01M -14,224 -26%
TAF
305
Tredje AP-fonden
Sweden
$2.74M
PA
306
Profund Advisors
Maryland
$2.73M +$308K +4,344 +12%
MFAM
307
Motley Fool Asset Management
Virginia
$2.71M -$3.09M -43,691 -52%
Northwestern Mutual Wealth Management
308
Northwestern Mutual Wealth Management
Wisconsin
$2.68M -$1.09M -15,367 -28%
OSAM
309
O'Shaughnessy Asset Management
Connecticut
$2.68M -$1.62M -22,916 -37%
OC
310
Oppenheimer & Co
New York
$2.68M -$286K -4,039 -9%
NB
311
Norinchukin Bank
Japan
$2.64M +$268K +3,781 +11%
SSA
312
Schonfeld Strategic Advisors
New York
$2.64M +$1.82M +25,645 +189%
SLAM
313
Swiss Life Asset Management
$2.63M -$43K -607 -2%
Janney Montgomery Scott
314
Janney Montgomery Scott
Pennsylvania
$2.63M -$776K -10,960 -22%
IMCOOI
315
Investment Management Corp of Ontario (IMCO)
Canada
$2.61M +$1.35M +19,023 +96%
NSAM
316
North Star Asset Management
Wisconsin
$2.59M +$252K +3,563 +10%
Cambridge Investment Research Advisors
317
Cambridge Investment Research Advisors
Iowa
$2.54M +$921 +13 +0%
KC
318
Katamaran Capital
United Kingdom
$2.46M +$2.6M +36,651 New
QIM
319
Quantitative Investment Management
Virginia
$2.4M +$2.53M +35,749 New
BWG
320
Boomfish Wealth Group
Georgia
$2.32M +$145K +2,052 +6%
WAM
321
Weiss Asset Management
Massachusetts
$2.31M +$2.43M +34,320 New
ECM
322
EagleClaw Capital Management
Massachusetts
$2.3M +$21.3K +300 +0.9%
FG
323
Formula Growth
Quebec, Canada
$2.29M
AC
324
Allstate Corporation
Illinois
$2.28M +$1.26M +17,764 +110%
DADC
325
D.A. Davidson & Co
Montana
$2.26M -$76.9K -1,086 -3%