SIMILARWEB LTD (SMWB) is held by 48 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is MENORA MIVTACHIM HOLDINGS LTD. as of Q1 2026.

Are institutions buying or selling SMWB?

In Q1 2026, 31 institutions opened or increased positions in SIMILARWEB LTD while 38 reduced or exited — a net selling quarter.

What is the Smart Money Verdict on SMWB?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for SIMILARWEB LTD.

How many hedge funds hold SMWB?

48 institutional investors report holding SIMILARWEB LTD (SMWB) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into SMWB?

As of Q1 2026, tracked institutions in SIMILARWEB LTD show 31 buyers versus 38 sellers — net outflows.

SIMILARWEB LTD

SMWB·M84137104·US·Common Stock·Technology - Software - Application-13D/G

Holders

(14 Elite)

$37.7M

Total Value

45% (69)

Consensus

31 buying - 38 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

View all

Held by 48 funds

14 elite

Who's Trading

InsiderOOOffer OrBuy $208KJun 1, 2026

InsiderEBEilam BarakBuy $193KMay 21, 2026

InsiderBMBeit-On Harel MosheBuy $292KMay 20, 2026

InsiderOOOffer OrBuy $11KMay 19, 2026

InsiderOOOffer OrBuy $179KMay 19, 2026

InsiderOOOffer OrBuy $10KMay 18, 2026

InsiderRTRapaport-Dagim TamarBuy $129KMay 18, 2026

ActivistPFPhoenix Financial Ltd.2.9%Feb 24, 2026

View all insider trades View all activist filings

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
MENORA MIVTACHIM HOLDINGS LTD.	Unchanged	4M	$10.5M	0.0%	-20.20%	0
WELLINGTON MANAGEMENT GROUP LLP	Decreased	3M(-1.2%)	$7.7M	0.0%	-24.44%	0
MILLENNIUM MANAGEMENT LLC	Increased	825,763(+130.8%)	$2.2M	0.0%	+28.97%	42
RENAISSANCE TECHNOLOGIES LLC	Increased	739,673(+104.6%)	$1.9M	0.0%	+20.34%	42
MWMARSHALL WACE, LLP	Increased	638,188(+118.2%)	$1.7M	0.0%	+16.78%	41
MORGAN STANLEY	Increased	591,863(+130.6%)	$1.5M	0.0%	+25.51%	41
Connor, Clark & Lunn Investment Management Ltd.	Decreased	533,634(-33.2%)	$1.4M	0.0%	-31.99%	0
CITADEL ADVISORS LLC	Increased	476,005(+137.9%)	$1.2M	0.0%	+33.93%	41
Qube Research & Technologies Ltd	Increased	416,146(+2409.6%)	$1.1M	0.0%	+132.05%	41
ARK Investment Management LLC	Increased	352,070(+48.9%)	$918,903	0.0%	-7.56%	34
PEAK6 LLC	Increased	321,156(+291x)	$838,217	0.0%	+146.80%	40
Schonfeld Strategic Advisors LLC	New	289,174	$754,743	0.0%	+148.51%	34
JANE STREET GROUP, LLC	Increased	231,266(+24.2%)	$603,604	0.0%	-11.66%	30
XTX Topco Ltd	New	228,880	$597,377	0.0%	+148.51%	34
PFPhoenix Financial Ltd.	Decreased	216,904(-94.9%)	$566,119	0.0%	-14.43%	0
UBS Group AG	Decreased	198,543(-63.0%)	$518,197	0.0%	-24.78%	0
JPMORGAN CHASE & CO	Increased	175,207(+765.3%)	$434,513	0.0%	+69.47%	26
BlackRock, Inc.	Decreased	127,504(-86.9%)	$332,785	0.0%	-49.13%	0
CITIGROUP INC	Increased	110,174(+8158.9%)	$287,554	0.0%	+136.37%	38
STATE STREET CORP	Decreased	109,396(-70.4%)	$285,524	0.0%	-24.25%	0