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Similarweb
SMWB

Overview Fund Activity

109 hedge funds and large institutions have $329M invested in Similarweb in 2025 Q2 according to their latest regulatory filings, with 21 funds opening new positions, 45 increasing their positions, 28 reducing their positions, and 20 closing their positions.

Holders
109
Holders Change
–
Holders Change %
0%
% of All Funds
1.46%
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
45
Reduced
28
Closed
20
Calls
$3.59M
Puts
$6.5M
Net Calls
-$2.91M
Net Calls Change
-$5.98M

Top Buyers

1
CP
1
CenterBook Partners
Connecticut
$11.3M
2
NL
2
Nuveen LLC
North Carolina
$10.2M
3
Morgan Stanley
3
Morgan Stanley
New York
$7.16M
4
PCM
4
Penn Capital Management
Pennsylvania
$3.23M
5
Citadel Advisors
5
Citadel Advisors
Florida
$6.9M

Top Sellers

1
Jennison Associates
1
Jennison Associates
New York
$0
2
PF
2
Phoenix Financial
Israel
$21.1M
3
T. Rowe Price Investment Management
3
T. Rowe Price Investment Management
Maryland
$0
4
CCPM
4
Cooper Creek Partners Management
New York
$0
5
SSA
5
Schonfeld Strategic Advisors
New York
$115K
Name Market Value Shares Shares
Change 		Shares
Change %
N
1
Naspers
South Africa
$87.6M 11,173,265 – –
MIFH
2
Migdal Insurance & Financial Holdings
Israel
$23.6M 3,006,157 +243,600 +9%
UM
3
Ulysses Management
New York
$23.5M 2,998,474 +249,766 +9%
PF
4
Phoenix Financial
Israel
$21.1M 1,629,185 -956,800 -37%
MMH
5
Menora Mivtachim Holdings
Israel
$18.2M 2,326,742 +80,272 +4%
CP
6
CenterBook Partners
Connecticut
$11.3M 1,441,810 +634,114 +79%
NL
7
Nuveen LLC
North Carolina
$10.2M 1,297,114 +574,143 +79%
YDMI
8
Y.D. More Investments
Israel
$9.68M 1,234,298 -165,565 -12%
SGM
9
Scalar Gauge Management
Texas
$8.75M 1,116,343 -96,856 -8%
Wellington Management Group
10
Wellington Management Group
Massachusetts
$7.31M 932,575 +43,212 +5%
Connor, Clark & Lunn Investment Management (CC&L)
11
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$7.22M 920,671 +114,497 +14%
Morgan Stanley
12
Morgan Stanley
New York
$7.16M 913,261 +572,884 +168%
Citadel Advisors
13
Citadel Advisors
Florida
$6.9M 880,265 +380,265 +76%
AFT
14
Alpha Family Trust
California
$6.68M 851,669 – –
BlackRock
15
BlackRock
New York
$6.66M 849,454 +18,386 +2%
PCM
16
Portolan Capital Management
Massachusetts
$5.7M 727,592 +357,401 +97%
SST
17
S Squared Technology
New York
$5.38M 686,672 -313,819 -31%
HIM
18
Herald Investment Management
United Kingdom
$4.71M 600,000 +300,000 +100%
CSS
19
Cubist Systematic Strategies
Connecticut
$3.26M 415,590 +230,088 +124%
PCM
20
Penn Capital Management
Pennsylvania
$3.23M 412,166 +412,166 New
SMTF
21
Sphera Management Technology Funds
Israel
$3.16M 402,878 +106,123 +36%
Renaissance Technologies
22
Renaissance Technologies
New York
$2.79M 355,573 +77,300 +28%
CI
23
Ceera Investments
Texas
$2.5M 319,027 – –
State Street
24
State Street
Massachusetts
$2.43M 310,541 +35,606 +13%
Millennium Management
25
Millennium Management
New York
$2.42M 308,384 +282,930 +1,112%
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