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, Q2 2026
Institutional positions in Similarweb Ltd. as of Jun 30, 2026. 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
- 70
- −10 vs. Q1 2026
- Shares held
- 50.9M
- +8.62M (+20.4%) vs. Q1 2026
- Total value
- $312.1M
- +$195.9M (+168.7%) vs. Q1 2026
- New holders
- 17
- 19 more added
- Sold out
- 27
- 20 more reduced
1 institution that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 70 | $312.1M |
| Q1 2026 | 81 | $144.4M |
| Q4 2025 | 100 | $454.1M |
| Q3 2025 | 95 | $526.1M |
| Q2 2025 | 111 | $414.8M |
| Q1 2025 | 110 | $460.5M |
| Q4 2024 | 113 | $739.3M |
| Q3 2024 | 94 | $411.8M |
| Q2 2024 | 77 | $323.3M |
| Q1 2024 | 74 | $370.7M |
| Q4 2023 | 55 | $208.3M |
| Q3 2023 | 52 | $286.9M |
| Q2 2023 | 49 | $257.8M |
| Q1 2023 | 42 | $274.2M |
| Q4 2022 | 47 | $261.4M |
| Q3 2022 | 45 | $160.0M |
| Q2 2022 | 48 | $225.9M |
| Q1 2022 | 43 | $366.7M |
| Q4 2021 | 45 | $500.6M |
| Q3 2021 | 34 | $303.9M |
| Q2 2021 | 47 | $294.1M |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Similarweb Ltd.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Naspers Ltd | 11,173,265 | $68.5M | 81.19% | 00.0% | Unchanged |
| Viola Growth Management Fund 2 Ltd. | 10,810,778 | $66.3M | 88.48% | +10,810,778 | New |
| Menora Mivtachim Holdings Ltd. | 4,015,494 | $24.6M | 0.10% | 00.0% | Unchanged |
| Wellington Management Group LLP | 3,624,685 | $22.2M | 0.00% | +657,928+22.2% | Added |
| ION Crossover Partners Ltd | 3,030,826 | $18.6M | 24.88% | 00.0% | Unchanged |
| Ulysses Management LLC | 2,928,474 | $18.0M | 6.21% | −70,000−2.3% | Reduced |
| S Squared Technology, LLC | 1,690,000 | $10.4M | 3.21% | +90,000+5.6% | Added |
| Schonfeld Strategic Advisors LLC | 1,210,629 | $7.42M | 0.04% | +921,455+318.7% | Added |
| Y.D. More Investments Ltd | 1,147,035 | $7.03M | 0.22% | −4,263−0.4% | Reduced |
| ARK Investment Management LLCSuperinvestorARK Invest | 834,663 | $5.12M | 0.03% | +482,593+137.1% | Added |
| Renaissance Technologies LLC | 713,728 | $4.38M | 0.01% | −25,945−3.5% | Reduced |
| CDC Financial, Inc. | 674,233 | $4.13M | 3.18% | +35,219+5.5% | Added |
| Alpha Family Trust | 658,935 | $4.04M | 1.62% | 00.0% | Unchanged |
| Nano Cap New Millennium Growth Fund L P | 650,000 | $3.98M | 3.06% | +260,000+66.7% | Added |
| Herald Investment Management Ltd | 645,465 | $3.96M | 0.54% | 00.0% | Unchanged |
| P.A.W. Capital Corp | 640,000 | $3.92M | 3.00% | +140,000+28.0% | Added |
| Sphera Management Technology Funds Ltd | 615,000 | $3.77M | 1.32% | 00.0% | Unchanged |
| CenterBook Partners LP | 599,737 | $3.68M | 0.18% | −725,376−54.7% | Reduced |
| Lotus Technology Management, LP | 531,409 | $3.40M | 4.21% | +531,409 | New |
| Jane Street Group, LLC | 513,277 | $3.15M | 0.00% | +282,011+121.9% | Added |
| PEAK6 LLC | 484,822 | $2.97M | 0.07% | +163,666+51.0% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 445,691 | $2.73M | 0.01% | −87,943−16.5% | Reduced |
| UBS Group AG | 403,328 | $2.47M | 0.00% | +204,785+103.1% | Added |
| Citadel Advisors LLC | 346,735 | $2.13M | 0.00% | −129,270−27.2% | Reduced |
| Morgan Stanley | 268,203 | $1.64M | 0.00% | −323,660−54.7% | Reduced |
| Lavelle Capital LP | 202,727 | $1.24M | 0.63% | 00.0% | Unchanged |
| Persistent Asset Partners Ltd | 180,000 | $1.10M | 0.35% | 00.0% | Unchanged |
| Susquehanna Fundamental Investments, LLC | 169,885 | $1.04M | 0.02% | +44,262+35.2% | Added |
| D. E. Shaw & Co., Inc. | 159,935 | $980.4K | 0.00% | +101,383+173.2% | Added |
| Antipodes Partners Ltd | 145,601 | $892.5K | 0.02% | +145,601 | New |
| Susquehanna International Group, LLP | 138,417 | $848.5K | 0.00% | +138,417 | New |
| BlackRock, Inc. | 133,533 | $818.6K | 0.00% | +6,029+4.7% | Added |
| Two Sigma Investments, LP | 129,851 | $796.0K | 0.00% | +50,775+64.2% | Added |
| MYDA Advisors LLC | 100,000 | $613.0K | 0.15% | +100,000 | New |
| Pathstone Holdings, LLC | 99,390 | $609.3K | 0.00% | +49,000+97.2% | Added |
| Gsa Capital Partners LLP | 95,899 | $588.0K | 0.04% | −56,206−37.0% | Reduced |
| State of Wyoming | 88,458 | $542.2K | 0.05% | +88,458 | New |
| State Street Corp | 77,054 | $472.3K | 0.00% | −32,342−29.6% | Reduced |
| Quadrature Capital Ltd | 68,207 | $418.1K | 0.00% | −26,027−27.6% | Reduced |
| Marshall Wace, LLP | 60,981 | $373.8K | 0.00% | −577,207−90.4% | Reduced |
| Centiva Capital, LP | 45,919 | $281.5K | 0.01% | −14,203−23.6% | Reduced |
| WealthTrust Axiom LLC | 44,565 | $273.2K | 0.06% | +44,565 | New |
| IMC-Chicago, LLC | 37,506 | $229.9K | 0.00% | +37,506 | New |
| Simplex Trading, LLC | 33,066 | $202.7K | 0.01% | +30,162+1,038.6% | Added |
| Qube Research & Technologies Ltd | 31,847 | $195.2K | 0.00% | −384,299−92.3% | Reduced |
| Lazard Asset Management LLC | 23,566 | $144.5K | 0.00% | +12,338+109.9% | Added |
| SG Americas Securities, LLC | 22,064 | $135.0K | 0.00% | +22,064 | New |
| Millennium Management LLC | 18,198 | $111.6K | 0.00% | −807,565−97.8% | Reduced |
| Integrated Wealth Concepts LLC | 15,000 | $92.0K | 0.00% | +15,000 | New |
| R Squared Ltd | 11,256 | $69.0K | 0.04% | +11,256 | New |
| XTX Topco Ltd | 10,906 | $66.9K | 0.00% | −217,974−95.2% | Reduced |
| Prelude Capital Management, LLC | 10,411 | $63.8K | 0.00% | +10,411 | New |
| PharVision Advisers, LLC | 10,368 | $63.6K | 1.20% | −8,559−45.2% | Reduced |
| Keebeck Alpha, LP | 10,337 | $63.4K | 0.13% | +10,337 | New |
| Cresset Asset Management, LLC | 10,144 | $62.2K | 0.00% | 00.0% | Unchanged |
| Marathon Capital Management | 10,000 | $61.3K | 0.01% | +10,000 | New |
| Wells Fargo & Company | 9,200 | $56.4K | 0.00% | +1,000+12.2% | Added |
| Citigroup Inc | 7,511 | $46.0K | 0.00% | −102,663−93.2% | Reduced |
| Acadian Asset Management LLC | 6,750 | $41.0K | 0.00% | −398,857−98.3% | Reduced |
| Royal Bank of Canada | 5,900 | $36.0K | 0.00% | +5,700+2,850.0% | Added |
| SBI Securities Co., Ltd. | 1,024 | $6.28K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 690 | $4.23K | 0.00% | −9,921−93.5% | Reduced |
| Tower Research Capital LLC (TRC) | 399 | $2.45K | 0.00% | +399 | New |
| Advisor Group Holdings, Inc. | 300 | $1.84K | 0.00% | 00.0% | Unchanged |
| Quarry LP | 149 | $913 | 0.00% | +149 | New |
| Jones Financial Companies LLLP | 100 | $560 | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 29 | $179 | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 11 | $67 | 0.00% | −231−95.5% | Reduced |
| FMR LLC | 6 | $37 | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 3 | $16 | 0.00% | +3 | New |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −792,664−100.0% | Sold out |
| Penn Capital Management Co Inc | 0 | $0 | 0.00% | −360,366−100.0% | Sold out |
| Militia Capital Management LLC | 0 | $0 | 0.00% | −236,000−100.0% | Sold out |
| Phoenix Holdings Ltd. | 0 | $0 | 0.00% | −216,904−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −175,207−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −147,616−100.0% | Sold out |
| Palogic Value Management, L.P. | 0 | $0 | 0.00% | −114,000−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −100,204−100.0% | Sold out |
| Oppenheimer & Co Inc | 0 | $0 | 0.00% | −91,088−100.0% | Sold out |
| Voleon Capital Management LP | 0 | $0 | 0.00% | −88,704−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −87,418−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −70,000−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −63,985−100.0% | Sold out |
| Toroso Investments, LLC | 0 | $0 | 0.00% | −61,626−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −52,410−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −52,019−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −42,643−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −36,634−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −22,670−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −20,111−100.0% | Sold out |
| New York State Common Retirement Fund | 0 | $0 | 0.00% | −18,774−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −18,008−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −13,020−100.0% | Sold out |
| Meitav Dash Investments Ltd | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −890−100.0% | Sold out |
| Assetmark, Inc | 0 | $0 | 0.00% | −48−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| Viola Ventures V.C. Management 4 Ltd. | – | – | – | – | Not filed |