Similarweb

SMWB • NYSE

Similarweb is a internet content & information company in the communication services sector on NYSE, led by Or Offer, with a market cap of $645.4M. As of Q3 2025, 54% of shares are held by 94 institutional investors, with NASPERS LTD as the largest holder at 13.17%.

CEOOr Offer

Market Cap$645.4M

Internet Content & Information

Communication Services

Employees899.0

Websitesimilarweb.com

Overview

Overview of institutional ownership in SMWB as of Q3 2025 with a market cap of $789.3M

All Institutions

Institutions: 94
Value Held: $425.6M
Shares Held: 45.7M
Avg Position: $4.5M
Median Position: $682.7K

Hedge Funds

Hedge Funds: 16
Value Held: $77.4M
Shares Held: 8.3M
Avg Position: $4.8M
Median Position: $2.3M

Ownership Breakdown

Institutional (non-HF)

44.12%

$348.2M

Hedge Funds

9.81%

$77.4M

Retail & Other

46.08%

$363.7M

Based on market cap of $789.3M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in SMWB as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
N NASPERS LTD Institution	-	$103.9M 15.70% of portfolio	13.17% 11.2M shares	Q4 2021 Held for 3y 11m	$661.8M
MENORA MIVTACHIM HOLDINGS LTD. Private Equity	Edward Joseph Keefe CFO	$29.8M 0.15% of portfolio	3.78% 3.2M shares	Q2 2024 Held for 1y 5m	$19.7B
M Migdal Insurance & Financial Holdings Ltd. Institution	-	$28.9M 0.37% of portfolio	3.66% 3.1M shares	Q2 2021 Held for 4y 5m	$7.9B
Ulysses Management LLC Hedge Fund•Multi-Strategy	Joshua Nash President	$27.9M 6.49% of portfolio	3.53% 3.0M shares	Q4 2021 Held for 3y 11m	$429.4M
P Phoenix Holdings Ltd. Institution	-	$27.8M 0.33% of portfolio	3.53% 3.0M shares	Q2 2021 Held for 4y 5m	$8.3B
WELLINGTON MANAGEMENT CO LLP Long Only Manager	Jean Marie Hynes CEO	$22.9M 0.00% of portfolio	2.90% 2.5M shares	Q1 2025 Held for 8 months	$571.21B
PENN CAPITAL MANAGEMENT CO INC Long Only Manager	Pamela Marie Lawrence President	$15.3M 1.18% of portfolio	1.94% 1.6M shares	Q2 2025 Held for 5 months	$1.3B
N Nuveen, LLC Institution	-	$13.8M 0.00% of portfolio	1.75% 1.5M shares	Q1 2025 Held for 8 months	$377.89B
Y Y.D. More Investments Ltd Institution	-	$11.3M 0.65% of portfolio	1.39% 1.2M shares	Q3 2023 Held for 2y 2m	$1.7B
CenterBook Partners LP Hedge Fund•Market Neutral	David Israel Stemerman CEO	$11.0M 0.54% of portfolio	1.39% 1.2M shares	Q3 2024 Held for 1y 2m	$2.0B

Net Capital Flow

Institutional buying and selling activity for SMWB in Q3 2025

Traded: +$45.6M
Buyers: 44
Sellers: 58
Total Bought: +$85.1M
Total Sold: −$39.5M
Avg Position: $3.5M

Biggest Buyers

Institution	Net Bought	Current Position
WELLINGTON MANAGEMENT CO LLP Long Only Manager	+$14.2M +1.5M shares	$22.9M 2.5M shares
P Phoenix Holdings Ltd. Institution	+$12.7M +1.4M shares	$27.8M 3.0M shares
PENN CAPITAL MANAGEMENT CO INC Long Only Manager	+$11.5M +1.2M shares	$15.3M 1.6M shares
MENORA MIVTACHIM HOLDINGS LTD. Private Equity	+$8.2M +881.7K shares	$29.8M 3.2M shares
N NEW YORK STATE COMMON RETIREMENT FUND Institution	+$7.9M +849.7K shares	$7.9M 849.7K shares
R ROYCE & ASSOCIATES LLC Institution	+$4.6M +494.3K shares	$4.6M 494.3K shares
Portolan Capital Management, LLC Hedge Fund•Long/Short	+$4.2M +451.4K shares	$11.0M 1.2M shares
F First Eagle Investment Management, LLC Long Only Manager	+$3.5M +375.5K shares	$5.1M 545.0K shares
UBS Group AG Institution	+$2.5M +273.9K shares	$2.9M 313.0K shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$1.9M +202.5K shares	$4.8M 510.9K shares

Biggest Sellers

Institution	Net Sold	Current Position
SCALAR GAUGE MANAGEMENT, LLC Hedge Fund•Long/Short	−$6.3M −674.6K shares	$4.1M 441.7K shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	−$5.8M −619.4K shares	$2.4M 260.9K shares
MORGAN STANLEY RIA/Wealth	−$5.7M −613.7K shares	$2.8M 299.5K shares
C Cubist Systematic Strategies, LLC Institution	−$3.4M −365.2K shares	$468.8K 50.4K shares
CenterBook Partners LP Hedge Fund•Market Neutral	−$2.4M −260.8K shares	$11.0M 1.2M shares
A Alpha Family Trust Institution	−$1.8M −192.7K shares	$6.1M 658.9K shares
J Jump Financial, LLC Institution	−$1.3M −139.8K shares	$427.8K 46.0K shares
JPMORGAN CHASE & CO Institution	−$1.0M −110.7K shares	$200.2K 21.5K shares
Y Y-Intercept Ltd Institution	−$923.8K −117.8K shares	Sold Off 0 shares
Q Qube Research & Technologies Ltd Institution	−$877.5K −111.9K shares	Sold Off 0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited SMWB in Q3 2025

New Positions: 5
New Value: $4.7M
Exited Positions: 27
Exited Value: $8.1M

New Positions

Institution	Position Value
R ROYCE & ASSOCIATES LLC Institution	$4.6M 494.3K shares
WEXFORD CAPITAL LP Hedge Fund•Multi-Strategy	$63.8K 6.9K shares
Larson Financial Group LLC RIA/Wealth	$25.0K 2.7K shares
CWM, LLC RIA/Wealth	$10.6K 1.1K shares
Crewe Advisors LLC RIA/Wealth	$6.8K 734.0 shares

Exited Positions

Institution	Previous Position
Y Y-Intercept Ltd Institution	$923.8K 117.8K shares
Q Qube Research & Technologies Ltd Institution	$877.5K 111.9K shares
FORMULA GROWTH LTD Hedge Fund•Long/Short	$784.0K 100.0K shares
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC Long Only Manager	$692.4K 88.3K shares
GSA CAPITAL PARTNERS LLP Hedge Fund•Quant	$648.7K 82.7K shares
TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy	$635.9K 81.1K shares
Hood River Capital Management LLC Long Only Manager	$615.0K 78.4K shares
P Petrus Trust Company, LTA Institution	$330.9K 42.2K shares
VOLORIDGE INVESTMENT MANAGEMENT, LLC Hedge Fund•Multi-Strategy	$327.5K 41.8K shares
LEUCADIA NATIONAL CORP Institution	$282.2K 36.0K shares

Options Activity

Institutions with the largest Call and Put options positions in SMWB as of Q3 2025

Call Positions: 7
Call Value: $1.7M
Put Positions: 6
Put Value: $17.5M

Call Positions

Institution	Position Value
P PEAK6 LLC Institution	$581.3K 625.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$381.3K 410.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$322.7K 347.0 contracts
Walleye Trading LLC RIA/Wealth	$232.5K 250.0 contracts
J JANE STREET GROUP, LLC Institution	$109.7K 118.0 contracts
W WOLVERINE TRADING, LLC Institution	$104.6K 109.0 contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	- - contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$6.0M 6.5K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$5.7M 6.2K contracts
J JANE STREET GROUP, LLC Institution	$3.2M 3.4K contracts
P PEAK6 LLC Institution	$1.3M 1.4K contracts
W WOLVERINE TRADING, LLC Institution	$1.1M 1.1K contracts
Walleye Trading LLC RIA/Wealth	$190.7K 205.0 contracts

Most Committed Institutions

Institutions with SMWB as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
N NASPERS LTD Institution	-	15.70% $103.9M	13.17% 11.2M shares	Q4 2021 Held for 3y 11m	$661.8M
Ulysses Management LLC Hedge Fund•Multi-Strategy	Joshua Nash President	6.49% $27.9M	3.53% 3.0M shares	Q4 2021 Held for 3y 11m	$429.4M
P P.A.W. CAPITAL CORP Hedge Fund•Long/Short	Peter Allen Wright CEO	4.04% $2.2M	0.28% 240.0K shares	Q3 2024 Held for 1y 2m	$55.2M
A Alpha Family Trust Institution	-	2.87% $6.1M	0.78% 658.9K shares	Q2 2021 Held for 4y 5m	$213.2M
S S Squared Technology, LLC Hedge Fund•Long/Short	Kenneth A Goldblatt Managing Partner	2.43% $6.4M	0.81% 686.7K shares	Q1 2024 Held for 1y 8m	$263.0M
S Sphera Management Technology Funds Ltd Institution	-	2.42% $4.3M	0.55% 462.9K shares	Q4 2024 Held for 11 months	$177.7M
SCALAR GAUGE MANAGEMENT, LLC Hedge Fund•Long/Short	Sumit Gautam CEO	2.09% $4.1M	0.52% 441.7K shares	Q4 2023 Held for 1y 11m	$196.1M
PENN CAPITAL MANAGEMENT CO INC Long Only Manager	Pamela Marie Lawrence President	1.18% $15.3M	1.94% 1.6M shares	Q2 2025 Held for 5 months	$1.3B
C CEERA INVESTMENTS, LLC RIA/Wealth	Rajesh Chelapurath President	0.94% $3.0M	0.38% 319.0K shares	Q1 2024 Held for 1y 8m	$315.3M
H Herald Investment Management Ltd Institution	-	0.75% $5.6M	0.71% 600.0K shares	Q1 2025 Held for 8 months	$745.8M

Hedge Fund Spotlight

Discover hedge funds investing in SMWB

RENAISSANCE TECHNOLOGIES LLC

Hedge Fund • Quant

Portfolio ManagerPeter Fitzhugh Brown

Portfolio Value: $75.8B
Positions: 3,419
Last Reported: Q3 2025

Sector Allocation

Position in Similarweb

Market Value: $3.4M
Shares Held: 364.0K
Portfolio Weight: 0.00%
Owned Since: 2022-Q2

Top Holding	Sector	Market Value	Weight
1 Palantir Technologies Inc. PLTR	Software - Infrastructure Technology	$1.6B	2.06%
2 Nvidia NVDA	Semiconductors Technology	$1.1B	1.39%
3 Roblox RBLX	Electronic Gaming & Multimedia Technology	$953.5M	1.26%