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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
MF
476
Magnetar Financial
Illinois
$400K +$510K +9,789 New
PCP
477
Perbak Capital Partners
United Kingdom
$400K +$516K +9,909 New
NICM
478
Neo Ivy Capital Management
New York
$399K +$89.9K +1,727 +21%
Capstone Investment Advisors
479
Capstone Investment Advisors
New York
$388K +$118K +2,261 +31%
TSS
480
Two Sigma Securities
New York
$388K +$501K +9,624 New
NB
481
Nicolet Bankshares
Wisconsin
$388K +$510K +9,795 New
BHCM
482
Brevan Howard Capital Management
Jersey
$383K +$494K +9,486 New
HBT
483
Hills Bank & Trust
Iowa
$381K -$3.64K -70 -0.7%
AWAU
484
Alliance Wealth Advisors (Utah)
Utah
$379K +$159K +3,045 +48%
PFM
485
Potomac Fund Management
Florida
$379K +$489K +9,387 New
DC
486
Davenport & Co
Virginia
$375K -$125K -2,396 -20%
LNWTC
487
Laird Norton Wetherby Trust Company
Washington
$371K +$4.37K +84 +0.9%
BPA
488
Beacon Pointe Advisors
California
$366K +$185K +3,552 +64%
WA
489
Wealth Alliance
New York
$365K +$273K +5,235 +137%
COI
490
Connable Office Inc
Michigan
$363K
CG
491
Caprock Group
Idaho
$362K +$468K +8,981 New
GI
492
GAMMA Investing
California
$362K -$70.3K -1,351 -13%
VI
493
Vestcor Inc
New Brunswick, Canada
$361K -$199K -3,824 -30%
PP
494
Patten & Patten
Tennessee
$353K +$127K +2,444 +39%
VFA
495
Voya Financial Advisors
Connecticut
$349K -$245K -4,700 -35%
Assenagon Asset Management
496
Assenagon Asset Management
Luxembourg
$347K -$149K -2,862 -25%
PIM
497
Plato Investment Management
Australia
$346K
HCM
498
Hillman Capital Management
Maryland
$345K +$445K +8,557 New
SL
499
Sentinus LLC
Illinois
$341K +$439K +8,441 New
FPAS
500
Focus Partners Advisor Solutions
Missouri
$337K +$434K +8,346 New