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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
Vanguard Group
1
Vanguard Group
Pennsylvania
$4.71B +$3.72M +52,558 +0.1%
BlackRock
2
BlackRock
New York
$2.28B -$153M -2,162,532 -6%
BAMCO Inc
3
BAMCO Inc
New York
$1.31B +$17.2M +242,533 +1%
State Street
4
State Street
Massachusetts
$1.25B +$24.7M +348,224 +2%
Principal Financial Group
5
Principal Financial Group
Iowa
$1.18B -$74.9M -1,057,296 -6%
Baillie Gifford & Co
6
Baillie Gifford & Co
United Kingdom
$870M +$332M +4,691,543 +57%
Geode Capital Management
7
Geode Capital Management
Massachusetts
$816M -$29.7M -419,288 -3%
Capital International Investors
8
Capital International Investors
California
$729M +$287M +4,053,456 +60%
ACM
9
AKRE Capital Management
Virginia
$647M +$22.1M +311,320 +3%
Janus Henderson Group
10
Janus Henderson Group
United Kingdom
$502M +$89M +1,256,573 +20%
Norges Bank
11
Norges Bank
Norway
$477M +$502M +7,090,495 New
Capital Research Global Investors
12
Capital Research Global Investors
California
$374M +$40.6M +573,108 +11%
Invesco
13
Invesco
Georgia
$362M +$60.2M +849,713 +19%
Morgan Stanley
14
Morgan Stanley
New York
$356M -$230M -3,251,888 -38%
Polen Capital Management
15
Polen Capital Management
Florida
$329M -$106M -1,489,973 -23%
VVP
16
Vulcan Value Partners
Alabama
$302M +$46.3M +653,412 +17%
MMA
17
Mizuho Markets Americas
New York
$297M -$50.1M -707,100 -14%
Amundi
18
Amundi
France
$277M +$69.4M +979,380 +31%
Bank of New York Mellon
19
Bank of New York Mellon
New York
$277M -$17.7M -250,369 -6%
NAMI
20
Nomura Asset Management International
Pennsylvania
$263M +$277M +3,909,161 New
Goldman Sachs
21
Goldman Sachs
New York
$252M +$110M +1,556,316 +71%
N
22
Nuveen
North Carolina
$239M +$3.84M +54,271 +2%
Bank of America
23
Bank of America
North Carolina
$236M -$13.6M -192,045 -5%
Northern Trust
24
Northern Trust
Illinois
$233M -$20.3M -286,332 -8%
T. Rowe Price Investment Management
25
T. Rowe Price Investment Management
Maryland
$233M -$3.24M -45,730 -1%