Similarweb Ltd. (SMWB) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

84,451,282Shares Outstanding

18,412,974Shares held by institutions

$71,810,599Value of institutional holdings

55.24%Institutional ownership %

5.59%Shares Changed QoQ

95No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Similarweb Ltd. (NYSE:SMWB) includes 95 filers as of the latest reporting cycle ending December 2025.

Similarweb saw its institutional ownership percentage rose to 55.2% in December 2025 from 55.1% in September 2025.
Quarterly data indicates a 5.59% shift in institutional share volume, and the annual owner count reflects a decrease of 15.18%.
A review of institutional activity for Similarweb shows 46 of 95 filers increasing their positions, while 31 reduced their stake, and 18 remained unchanged.
Collectively, institutional investors increased their stake in Similarweb to 46.65Mn shares as of December 2025, a change that is up by 2.47Mn shares quarter on quarter and up 5.39Mn shares year over year.
As of December 31, 2025, NASPERS LTD held Similarweb's largest shareholding position with over 11.17Mn shares, representing 13.23% of total outstanding shares.
Among the most significant buyers of Similarweb during December 2025 were Phoenix Financial Ltd. (1.29Mn), MENORA MIVTACHIM HOLDINGS LTD. (807.10K), WELLINGTON MANAGEMENT GROUP LLP (543.63K), UBS Group AG (223.56K), Persistent Asset Partners Ltd (180.00K).
Leading sellers of Similarweb stock in December 2025 included Portolan Capital Management, LLC (686.14K), CenterBook Partners LP (219.97K), JANE STREET GROUP, LLC (187.71K), MILLENNIUM MANAGEMENT LLC (153.11K), Connor, Clark & Lunn Investment Management Ltd. (145.33K).
The top 10 institutional holders of Similarweb for the quarter ending December 2025 included NASPERS LTD (11.17Mn), Phoenix Financial Ltd. (4.29Mn), MENORA MIVTACHIM HOLDINGS LTD. (4.02Mn), Migdal Insurance & Financial Holdings Ltd. (3.11Mn), WELLINGTON MANAGEMENT GROUP LLP (3.00Mn), Ulysses Management LLC (3.00Mn), Penn Capital Management Company, LLC (1.59Mn), Nuveen, LLC (1.52Mn), Y.D. More Investments Ltd (1.17Mn), BlackRock, Inc. (976.51K).

95 Institutional Holders

18,412,974 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
NASPERS LTD	31 Dec, 2025	11,173,265	0	0.00%	$83,687,755.00
Phoenix Financial Ltd.	31 Dec, 2025	4,285,786	1,292,700	43.19%	$32,100,537.00
MENORA MIVTACHIM HOLDINGS LTD.	31 Dec, 2025	4,015,494	807,100	25.16%	$30,076,050.00
Migdal Insurance & Financial Holdings Ltd.	31 Dec, 2025	3,106,157	0	0.00%	$23,265.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	3,001,433	543,628	22.12%	$22,480,733.00
Ulysses Management LLC	31 Dec, 2025	2,998,474	0	0.00%	$22,458,570.00
Penn Capital Management Company, LLC	31 Dec, 2025	1,588,680	-57,414	-3.49%	$11,909,417.00
Nuveen, LLC	31 Dec, 2025	1,520,398	37,457	2.53%	$11,387,781.00
Y.D. More Investments Ltd	31 Dec, 2025	1,171,298	-11,500	-0.97%	$8,371,560.00
BlackRock, Inc.	31 Dec, 2025	976,514	31,250	3.31%	$7,314,091.00
CenterBook Partners LP	31 Dec, 2025	960,996	-219,970	-18.63%	$7,197,860.00
NEW YORK STATE COMMON RETIREMENT FUND	31 Dec, 2025	852,915	3,170	0.37%	$6,388,333.00
Connor, Clark & Lunn Investment Management Ltd.	31 Dec, 2025	799,222	-145,330	-15.39%	$5,986,173.00
S Squared Technology, LLC	31 Dec, 2025	775,161	88,489	12.89%	$5,805,956.00
Alpha Family Trust	31 Dec, 2025	658,935	0	0.00%	$4,935,424.00
First Eagle Investment Management, LLC	31 Dec, 2025	645,647	100,646	18.47%	$4,835,896.00
HERALD INVESTMENT MANAGEMENT Ltd	31 Dec, 2025	645,465	45,465	7.58%	$4,853,897.00
ROYCE & ASSOCIATES LP	31 Dec, 2025	537,406	43,078	8.71%	$4,025,171.00
UBS Group AG	31 Dec, 2025	536,549	223,562	71.43%	$4,018,752.00
Portolan Capital Management, LLC	31 Dec, 2025	492,861	-686,139	-58.20%	$3,691,529.00

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