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Similarweb

110 hedge funds and large institutions have $330M invested in Similarweb in 2025 Q2 according to their latest regulatory filings, with 21 funds opening new positions, 46 increasing their positions, 28 reducing their positions, and 20 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
110
Holders Change
+1
Holders Change %
+0.92%
% of All Funds
1.47%
Holding in Top 10
4
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-20%
% of All Funds
0.05%
New
21
Increased
46
Reduced
28
Closed
20
Calls
$6.59M
Puts
$8.3M
Net Calls
-$1.71M
Net Calls Change
-$4.79M
Name Holding Trade Value Shares
Change
Shares
Change %
Two Sigma Investments
51
Two Sigma Investments
New York
$636K -$376K -47,952 -37%
HRCM
52
Hood River Capital Management
Florida
$615K +$105K +13,446 +21%
LCM
53
Legato Capital Management
California
$610K -$1.51K -193 -0.2%
Russell Investments Group
54
Russell Investments Group
United Kingdom
$593K -$1.53M -194,991 -72%
PEAK6
55
PEAK6
Illinois
$540K +$186K +23,757 +53%
Simplex Trading
56
Simplex Trading
Illinois
$515K +$199K +25,456 +63%
TI
57
Tidal Investments
Wisconsin
$483K +$193K +24,568 +66%
HF
58
HRT Financial
New York
$456K +$264K +33,718 +137%
Jane Street
59
Jane Street
New York
$410K +$276K +35,210 +206%
Two Sigma Advisers
60
Two Sigma Advisers
New York
$407K +$121K +15,400 +42%
California State Teachers Retirement System (CalSTRS)
61
California State Teachers Retirement System (CalSTRS)
California
$389K +$89K +11,356 +30%
Federated Hermes
62
Federated Hermes
Pennsylvania
$376K +$129K +16,500 +52%
BNP Paribas Financial Markets
63
BNP Paribas Financial Markets
France
$344K -$234K -29,897 -41%
PTC
64
Petrus Trust Company
Texas
$331K +$331K +42,211 New
Voloridge Investment Management
65
Voloridge Investment Management
Florida
$327K -$948K -120,933 -74%
D.E. Shaw & Co
66
D.E. Shaw & Co
New York
$307K +$180K +22,963 +142%
UBS Group
67
UBS Group
Switzerland
$306K -$205K -26,210 -40%
Legal & General Group
68
Legal & General Group
United Kingdom
$299K
JFG
69
Jefferies Financial Group
New York
$282K +$282K +36,000 New
Vanguard Group
70
Vanguard Group
Pennsylvania
$277K
MF
71
Magnetar Financial
Illinois
$272K +$272K +34,633 New
Pathstone Holdings
72
Pathstone Holdings
New Jersey
$259K
SG Americas Securities
73
SG Americas Securities
New York
$255K +$255K +32,580 New
Cetera Investment Advisers
74
Cetera Investment Advisers
Illinois
$241K -$74K -9,435 -23%
CAM
75
Cresset Asset Management
Illinois
$236K -$37.4K -4,764 -14%