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CoStar Group

856 hedge funds and large institutions have $34B invested in CoStar Group in 2025 Q1 according to their latest regulatory filings, with 139 funds opening new positions, 376 increasing their positions, 264 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed

183% more call options, than puts

Call options by funds: $337M | Put options by funds: $119M

85% more first-time investments, than exits

New positions opened: 139 | Existing positions closed: 75

44% more funds holding in top 10

Funds holding in top 10: 1623 (+7)

42% more repeat investments, than reductions

Existing positions increased: 376 | Existing positions reduced: 264

18% more capital invested

Capital invested by funds: $28.9B → $34B (+$5.08B)

7% more funds holding

Funds holding: 803856 (+53)

3.29% more ownership

Funds ownership: 98.4%101.68% (+3.3%)

Holders
856
Holders Change
+53
Holders Change %
+6.6%
% of All Funds
11.48%
Holding in Top 10
23
Holding in Top 10 Change
+7
Holding in Top 10 Change %
+43.75%
% of All Funds
0.31%
New
139
Increased
376
Reduced
264
Closed
75
Calls
$337M
Puts
$119M
Net Calls
+$218M
Net Calls Change
+$204M
Name Holding Trade Value Shares
Change
Change in
Stake
Vanguard Group
1
Vanguard Group
Pennsylvania
$5.42B +$206M +2,709,320 +4%
BlackRock
2
BlackRock
New York
$2.97B -$50.1M -658,076 -2%
BAMCO Inc
3
BAMCO Inc
New York
$1.51B -$13M -171,042 -0.9%
Principal Financial Group
4
Principal Financial Group
Iowa
$1.51B -$13.6M -178,402 -0.9%
State Street
5
State Street
Massachusetts
$1.39B +$41.3M +542,553 +3%
Capital International Investors
6
Capital International Investors
California
$1.16B +$48.5M +637,474 +5%
Geode Capital Management
7
Geode Capital Management
Massachusetts
$953M +$45M +591,681 +5%
ACM
8
AKRE Capital Management
Virginia
$738M -$21.9K -288 -0%
Baillie Gifford & Co
9
Baillie Gifford & Co
United Kingdom
$668M +$39.9M +524,601 +7%
Morgan Stanley
10
Morgan Stanley
New York
$627M +$272M +3,569,880 +82%
MMA
11
Mizuho Markets Americas
New York
$586M +$563M +7,401,273 New
Massachusetts Financial Services
12
Massachusetts Financial Services
Massachusetts
$524M -$36.1M -474,271 -7%
Polen Capital Management
13
Polen Capital Management
Florida
$523M +$7.96M +104,612 +2%
T. Rowe Price Investment Management
14
T. Rowe Price Investment Management
Maryland
$509M +$176K +2,314 +0%
Macquarie Group
15
Macquarie Group
Australia
$489M -$87.5M -1,150,187 -16%
Bank of America
16
Bank of America
North Carolina
$486M +$195M +2,566,144 +72%
Bank of New York Mellon
17
Bank of New York Mellon
New York
$438M -$860K -11,302 -0.2%
Norges Bank
18
Norges Bank
Norway
$418M -$14.4M -188,745 -3%
VVP
19
Vulcan Value Partners
Alabama
$383M -$20.2M -265,961 -5%
UBS Group
20
UBS Group
Switzerland
$376M +$246M +3,234,275 +215%
Invesco
21
Invesco
Georgia
$341M +$5.37M +70,561 +2%
Northern Trust
22
Northern Trust
Illinois
$319M +$2.6M +34,210 +0.9%
TCIM
23
TOMS Capital Investment Management
New York
$278M +$267M +3,508,000 New
Capital Research Global Investors
24
Capital Research Global Investors
California
$271M +$1.13M +14,874 +0.4%
Amundi
25
Amundi
France
$259M +$44.6M +585,853 +21%