SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS (SMWB) Institutional Ownership

13F Institutional Holders and Ownership History from Q2 2021 to Q4 2025

Type / Class
Equity / Ordinary shares, par value 0.01 NIS
Symbol
SMWB on NYSE
Shares outstanding
86,901,701
Price per share
$5.30
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
46,568,571
Total reported value
$348,413,138
% of total 13F portfolios
0%
Share change
+656,742
Value change
+$1,798,271
Number of holders
96
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS (SMWB) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Viola Growth Management Fund 2 Ltd. 13% $82,486,236 10,810,778 Harel Beit-On 31 Dec 2024
Phoenix Financial Ltd. 2.9% -43% $13,264,676 -$8,853,942 2,502,769 -40% Phoenix Financial Ltd. 18 Feb 2026

As of 31 Dec 2025, 96 institutional investors reported holding 46,568,571 shares of SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS (SMWB). This represents 54% of the company’s total 86,901,701 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS (SMWB) together control 49% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
NASPERS LTD 13% 11,173,265 0% 18% $83,687,755
Phoenix Financial Ltd. 4.9% 4,285,786 +43% 0.35% $32,100,537
MENORA MIVTACHIM HOLDINGS LTD. 4.6% 4,015,494 +25% 0.14% $30,076,050
Migdal Insurance & Financial Holdings Ltd. 3.6% 3,106,157 0% 0.2% $23,265,000
WELLINGTON MANAGEMENT GROUP LLP 3.5% 3,001,433 +22% 0% $22,480,733
Ulysses Management LLC 3.5% 2,998,474 0% 5.9% $22,458,570
Penn Capital Management Company, LLC 1.8% 1,588,680 -3.5% 0.95% $11,909,417
Nuveen, LLC 1.7% 1,520,398 +2.5% 0% $11,387,781
Y.D. More Investments Ltd 1.3% 1,171,298 -0.97% 0.4% $8,371,560
BlackRock, Inc. 1.1% 976,514 +3.3% 0% $7,314,091
CenterBook Partners LP 1.1% 960,996 -19% 0.35% $7,197,860
NEW YORK STATE COMMON RETIREMENT FUND 0.98% 852,915 +0.37% 0.01% $6,388,333
Connor, Clark & Lunn Investment Management Ltd. 0.92% 799,222 -15% 0.02% $5,986,173
S Squared Technology, LLC 0.89% 775,161 +13% 2.2% $5,805,956
Alpha Family Trust 0.76% 658,935 0% 2.2% $4,935,424
First Eagle Investment Management, LLC 0.74% 645,647 +18% 0.01% $4,835,896
HERALD INVESTMENT MANAGEMENT Ltd 0.74% 645,465 +7.6% 0.63% $4,853,897
ROYCE & ASSOCIATES LP 0.62% 537,406 +8.7% 0.04% $4,025,171
UBS Group AG 0.62% 536,549 +71% 0% $4,018,752
Portolan Capital Management, LLC 0.57% 492,861 -58% 0.2% $3,691,529
Sphera Management Technology Funds Ltd 0.55% 480,000 +3.7% 1.9% $3,595,200
STATE STREET CORP 0.43% 370,001 +16% 0% $2,771,307
RENAISSANCE TECHNOLOGIES LLC 0.42% 361,473 -0.69% 0% $2,707,433
MILLENNIUM MANAGEMENT LLC 0.41% 357,807 -30% 0% $2,679,974
MARSHALL WACE, LLP 0.34% 292,483 +25% 0% $2,190,698

Institutional Holders of SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS (SMWB) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 46,568,571 $348,413,138 +$1,798,271 $7.49 96
2025 Q3 45,724,161 $425,584,367 +$32,862,772 $9.30 94
2025 Q2 39,421,999 $309,072,075 -$25,108,591 $7.84 109
2025 Q1 44,869,261 $371,050,037 +$11,060,980 $8.27 109
2024 Q4 41,334,757 $585,694,097 +$81,455,239 $14.17 112
2024 Q3 35,350,723 $312,488,678 +$44,808,638 $8.84 93
2024 Q2 30,383,807 $236,058,514 +$2,468,377 $7.77 76
2024 Q1 30,002,420 $269,664,457 +$24,271,694 $9.00 73
2023 Q4 27,327,571 $148,483,812 -$2,713,075 $5.33 54
2023 Q3 33,175,176 $214,079,411 +$32,261,423 $6.48 51
2023 Q2 28,061,800 $184,076,669 -$3,184,390 $6.56 46
2023 Q1 28,524,216 $192,826,355 +$1,605,090 $6.76 41
2022 Q4 28,985,254 $184,506,669 +$2,355,742 $6.43 45
2022 Q3 27,260,764 $160,023,552 -$1,398,711 $5.86 43
2022 Q2 27,377,253 $225,856,900 -$12,112,701 $8.25 45
2022 Q1 28,312,445 $366,690,000 +$3,417,483 $12.95 42
2021 Q4 27,949,255 $500,553,000 +$30,410,579 $17.91 44
2021 Q3 14,519,959 $303,896,319 -$6,442,609 $20.93 34
2021 Q2 14,926,736 $294,056,000 +$294,056,003 $19.70 45