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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
VPM
1
Vanguard Portfolio Management
Pennsylvania
$1.54B +$1.99B +38,234,133 New
BlackRock
2
BlackRock
New York
$1.36B -$8.46M -162,442 -0.5%
VCM
3
Vanguard Capital Management
Pennsylvania
$1.11B +$1.43B +27,423,903 New
State Street
4
State Street
Massachusetts
$752M +$969K +18,623 +0.1%
Principal Financial Group
5
Principal Financial Group
Iowa
$714M +$6.77M +130,118 +0.7%
BAMCO Inc
6
BAMCO Inc
New York
$658M -$166M -3,183,924 -16%
Capital International Investors
7
Capital International Investors
California
$626M +$243M +4,671,743 +43%
Baillie Gifford & Co
8
Baillie Gifford & Co
United Kingdom
$549M +$35.3M +677,737 +5%
Polen Capital Management
9
Polen Capital Management
Florida
$507M +$400M +7,679,432 +157%
Geode Capital Management
10
Geode Capital Management
Massachusetts
$500M +$13.9M +266,485 +2%
ACM
11
AKRE Capital Management
Virginia
$417M +$38M +730,468 +8%
Goldman Sachs
12
Goldman Sachs
New York
$373M +$286M +5,494,284 +146%
Janus Henderson Group
13
Janus Henderson Group
United Kingdom
$312M +$13.1M +250,772 +3%
Invesco
14
Invesco
Georgia
$288M +$91.1M +1,749,946 +32%
D.E. Shaw & Co
15
D.E. Shaw & Co
New York
$238M +$261M +5,004,135 +553%
Morgan Stanley
16
Morgan Stanley
New York
$218M +$6.32M +121,479 +2%
Capital Research Global Investors
17
Capital Research Global Investors
California
$176M -$62.1M -1,193,256 -21%
Bank of America
18
Bank of America
North Carolina
$144M +$3.3M +63,295 +2%
VanEck Associates
19
VanEck Associates
New York
$140M +$178M +3,422,202 +6,054%
Northern Trust
20
Northern Trust
Illinois
$138M -$1.76M -33,831 -1%
MG
21
Meritage Group
California
$134M +$173M +3,329,006 New
Amundi
22
Amundi
France
$132M -$43.4M -833,792 -20%
Legal & General Group
23
Legal & General Group
United Kingdom
$122M +$8.55M +164,208 +6%
BMO
24
Beck Mack & Oliver
New York
$118M +$36.5M +702,086 +32%
Charles Schwab
25
Charles Schwab
California
$116M +$11M +211,163 +8%