Similarweb Ltd. (SMWB) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

84,817,195Shares Outstanding

46,567,120Shares held by institutions

$124,799,882Value of institutional holdings

54.90%Institutional ownership %

5.91%Shares Changed QoQ

96No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Similarweb Ltd. (NYSE:SMWB) showed up in the 13F filings of 96 institutional investors as of December 2025.

These investors held 54.8% of outstanding shares in December 2025, up from 53.5% in September 2025.
Their total shares held in SMWB increased 5.92% from the prior quarter, while the number of investors in Similarweb decreased 13.51% year over year.
Activity in SMWB broke down as 46 buyers, 31 sellers, and 19 unchanged among 96 total holders.
The aggregate institutional position in Similarweb amounted to 46.51Mn shares as of December 2025, up by 2.6Mn shares quarter on quarter, and up 4.89Mn shares year over year.
As of December 31, 2025, NASPERS LTD held the largest stake in Similarweb with 11.17Mn shares, accounting for 13.17% of total shares outstanding.
The biggest buyers of Similarweb for the quarter ending December 2025 included Phoenix Financial Ltd. (1.29Mn), MENORA MIVTACHIM HOLDINGS LTD. (807.1K), WELLINGTON MANAGEMENT GROUP LLP (543.63K), UBS Group AG (223.56K), Persistent Asset Partners Ltd (180.0K).
Top sellers of SMWB stock for the quarter ending December 2025 included Portolan Capital Management, LLC (686.14K), CenterBook Partners LP (219.97K), MILLENNIUM MANAGEMENT LLC (153.11K), Connor, Clark & Lunn Investment Management Ltd. (145.33K), Bank Of America Corp /De/ (101.3K).
Per Business Quant, the top 10 investors in SMWB for the quarter ending December 2025 include 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 (3.0Mn), Ulysses Management LLC (3.0Mn), Penn Capital Management Company, LLC (1.59Mn), Nuveen, LLC (1.52Mn), Y.D. More Investments Ltd (1.17Mn), BlackRock, Inc. (976.51K).

96 Institutional Holders

46,567,120 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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