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Similarweb Ltd.

SMWB
Exchange
NYSE
Industry
Services-Computer Programming, Data Processing, Etc.
SEC CIK
0001842731

In the last 90 days, Similarweb Ltd. insiders filed 0 open-market purchases and 9 sales; 70 institutions reported holding it in 13F filings for Q2 2026, worth $312.1M in total; ARK Invest is the only superinvestor holding it.

13F holders, Q4 2022

Institutional positions in Similarweb Ltd. as of Dec 31, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
47
+2 vs. Q3 2022
Shares held
40.9M
+13.7M (+50.2%) vs. Q3 2022
Total value
$261.4M
+$101.4M (+63.3%) vs. Q3 2022
New holders
13
9 more added
Sold out
11
11 more reduced

Compare with Q3 2022: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting SMWB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2022: 47 institutions
Q1 2021: 0 institutionsQ2 2021: 47 institutionsQ3 2021: 34 institutionsQ4 2021: 45 institutionsQ1 2022: 43 institutionsQ2 2022: 48 institutionsQ3 2022: 45 institutionsQ4 2022: 47 institutionsQ1 2023: 42 institutionsQ2 2023: 49 institutionsQ3 2023: 52 institutionsQ4 2023: 55 institutionsQ1 2024: 74 institutionsQ2 2024: 77 institutionsQ3 2024: 94 institutionsQ4 2024: 113 institutionsQ1 2025: 110 institutionsQ2 2025: 111 institutionsQ3 2025: 95 institutionsQ4 2025: 100 institutionsQ1 2026: 81 institutionsQ2 2026: 70 institutions
Value heldQ4 2022: $261.4M
Q1 2021: $0Q2 2021: $294.1MQ3 2021: $303.9MQ4 2021: $500.6MQ1 2022: $366.7MQ2 2022: $225.9MQ3 2022: $160.0MQ4 2022: $261.4MQ1 2023: $274.2MQ2 2023: $257.8MQ3 2023: $286.9MQ4 2023: $208.3MQ1 2024: $370.7MQ2 2024: $323.3MQ3 2024: $411.8MQ4 2024: $739.3MQ1 2025: $460.5MQ2 2025: $414.8MQ3 2025: $526.1MQ4 2025: $454.1MQ1 2026: $144.4MQ2 2026: $312.1M
Institutions holding SMWB and their total value by quarter
QuarterHoldersValue
Q2 202670$312.1M
Q1 202681$144.4M
Q4 2025100$454.1M
Q3 202595$526.1M
Q2 2025111$414.8M
Q1 2025110$460.5M
Q4 2024113$739.3M
Q3 202494$411.8M
Q2 202477$323.3M
Q1 202474$370.7M
Q4 202355$208.3M
Q3 202352$286.9M
Q2 202349$257.8M
Q1 202342$274.2M
Q4 202247$261.4M
Q3 202245$160.0M
Q2 202248$225.9M
Q1 202243$366.7M
Q4 202145$500.6M
Q3 202134$303.9M
Q2 202147$294.1M
Q1 20210$0

Institutions, Q4 2022

Shares, value and share of portfolio for each institution holding Similarweb Ltd.; share changes are against Q3 2022.

Institutions holding SMWB in Q4 2022
InstitutionSharesValue% of portfolioChange in sharesAction
Viola Ventures V.C. Management 4 Ltd.11,955,302$76.9M17.07%+11,955,302New
Naspers Ltd11,173,265$71.8M9.46%00.0%Unchanged
ION Crossover Partners Ltd5,772,183$37.1M87.08%00.0%Unchanged
Ulysses Management LLC2,267,267$14.6M4.28%−146,484−6.1%Reduced
Alpha Family Trust1,681,777$10.8M9.76%00.0%Unchanged
Migdal Insurance & Financial Holdings Ltd.1,586,950$10.2M0.23%−50,000−3.1%Reduced
Y.D. More Investments Ltd1,511,866$8.32M2.25%+1,511,866New
Portolan Capital Management, LLC888,184$5.71M0.57%+888,184New
Union Investments & Development Ltd.641,962$4.42M2.60%+641,962New
Meitav Dash Investments Ltd550,821$3.03M0.05%00.0%Unchanged
North Run Capital, LP375,000$2.41M5.54%+375,000New
ARK Investment Management LLCSuperinvestorARK Invest334,983$2.15M0.02%+104,483+45.3%Added
Old Well Partners, LLC296,304$1.91M1.65%+4,551+1.6%Added
Blair William & Co286,465$1.84M0.01%−83,001−22.5%Reduced
BlackRock Inc.248,701$1.60M0.00%−45,525−15.5%Reduced
Baader Bank INC246,970$1.59M0.15%+246,970New
Premier Fund Managers Ltd265,855$1.46M0.06%00.0%Unchanged
Tudor Investment Corp Et Al136,244$876.0K0.02%+858+0.6%Added
Bamco Inc128,887$828.7K0.00%−411,012−76.1%Reduced
State Street Corp111,634$717.8K0.00%+22,100+24.7%Added
Horrell Capital Management, Inc.86,000$553.0K0.18%+86,000New
Simplex Trading, LLC59,827$384.0K0.02%+28,675+92.0%Added
Swiss National Bank44,388$285.4K0.00%00.0%Unchanged
Veritable, L.P.35,000$225.1K0.00%+35,000New
UBS Asset Management Americas Inc33,200$213.5K0.00%00.0%Unchanged
Belvedere Trading LLC29,495$189.7K0.11%+29,495New
Marshall Wace, LLP23,173$149.0K0.00%−89,956−79.5%Reduced
Renaissance Technologies LLC22,400$144.0K0.00%+6,400+40.0%Added
California State Teachers Retirement System20,295$130.5K0.00%00.0%Unchanged
Yarbrough Capital, LLC17,200$110.6K0.01%00.0%Unchanged
Vanguard Group Inc17,096$109.9K0.00%00.0%Unchanged
Credit Suisse AG17,011$109.4K0.00%−8,839−34.2%Reduced
PDT Partners, LLC16,656$107.1K0.02%+16,656New
Morgan Stanley15,318$98.5K0.00%+2,110+16.0%Added
CAPROCK Group, Inc.12,500$80.4K0.01%00.0%Unchanged
Lazard Asset Management LLC7,454$47.0K0.00%+7,454New
Antipodes Partners Ltd5,263$33.0K0.00%+5,263New
Legal & General Group Plc4,171$26.8K0.00%+1,640+64.8%Added
Citigroup Inc4,115$26.5K0.00%−16,126−79.7%Reduced
Wells Fargo & Company3,138$20.2K0.00%00.0%Unchanged
Harel Insurance Investments & Financial Services Ltd.2,185$14.0K0.00%−233−9.6%Reduced
UBS Group AG1,966$12.6K0.00%+1,966New
Bank of America Corp1,332$8.56K0.00%−22,535−94.4%Reduced
Signaturefd, LLC447$2.87K0.00%00.0%Unchanged
JPMorgan Chase & Co300$2.00K0.00%−34,372−99.1%Reduced
FMR LLC6$390.00%00.0%Unchanged
Royal Bank of Canada57$00.00%+56+5,600.0%Added
Millennium Management LLC0$00.00%−398,109−100.0%Sold out
Phoenix Holdings Ltd.0$00.00%−330,561−100.0%Sold out
Bessemer Group Inc0$00.00%−312,677−100.0%Sold out
Susquehanna International Group, LLP0$00.00%−145,519−100.0%Sold out
Wolverine Trading, LLC0$00.00%−56,785−100.0%Sold out
ETF Managers Group, LLC0$00.00%−50,300−100.0%Sold out
Citadel Advisors LLC0$00.00%−46,202−100.0%Sold out
Trexquant Investment LP0$00.00%−21,030−100.0%Sold out
Goldman Sachs Group Inc0$00.00%−11,004−100.0%Sold out
Chicago Capital, LLC0$00.00%−10,819−100.0%Sold out
Tower Research Capital LLC (TRC)0$00.00%−1,518−100.0%Sold out