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 |
|---|---|---|---|---|---|
| Farther Finance Advisors, LLC | 3 | $16 | 0.00% | +3 | New |
| FMR LLC | 6 | $37 | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 11 | $67 | 0.00% | −231−95.5% | Reduced |
| Smartleaf Asset Management LLC | 29 | $179 | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 100 | $560 | 0.00% | 00.0% | Unchanged |
| Quarry LP | 149 | $913 | 0.00% | +149 | New |
| Advisor Group Holdings, Inc. | 300 | $1.84K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 399 | $2.45K | 0.00% | +399 | New |
| Barclays PLC | 690 | $4.23K | 0.00% | −9,921−93.5% | Reduced |
| SBI Securities Co., Ltd. | 1,024 | $6.28K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 5,900 | $36.0K | 0.00% | +5,700+2,850.0% | Added |
| Acadian Asset Management LLC | 6,750 | $41.0K | 0.00% | −398,857−98.3% | Reduced |
| Citigroup Inc | 7,511 | $46.0K | 0.00% | −102,663−93.2% | Reduced |
| Wells Fargo & Company | 9,200 | $56.4K | 0.00% | +1,000+12.2% | Added |
| Marathon Capital Management | 10,000 | $61.3K | 0.01% | +10,000 | New |
| Cresset Asset Management, LLC | 10,144 | $62.2K | 0.00% | 00.0% | Unchanged |
| Keebeck Alpha, LP | 10,337 | $63.4K | 0.13% | +10,337 | New |
| PharVision Advisers, LLC | 10,368 | $63.6K | 1.20% | −8,559−45.2% | Reduced |
| Prelude Capital Management, LLC | 10,411 | $63.8K | 0.00% | +10,411 | New |
| XTX Topco Ltd | 10,906 | $66.9K | 0.00% | −217,974−95.2% | Reduced |
| R Squared Ltd | 11,256 | $69.0K | 0.04% | +11,256 | New |
| Integrated Wealth Concepts LLC | 15,000 | $92.0K | 0.00% | +15,000 | New |
| Millennium Management LLC | 18,198 | $111.6K | 0.00% | −807,565−97.8% | Reduced |
| SG Americas Securities, LLC | 22,064 | $135.0K | 0.00% | +22,064 | New |
| Lazard Asset Management LLC | 23,566 | $144.5K | 0.00% | +12,338+109.9% | Added |
| Qube Research & Technologies Ltd | 31,847 | $195.2K | 0.00% | −384,299−92.3% | Reduced |
| Simplex Trading, LLC | 33,066 | $202.7K | 0.01% | +30,162+1,038.6% | Added |
| IMC-Chicago, LLC | 37,506 | $229.9K | 0.00% | +37,506 | New |
| WealthTrust Axiom LLC | 44,565 | $273.2K | 0.06% | +44,565 | New |
| Centiva Capital, LP | 45,919 | $281.5K | 0.01% | −14,203−23.6% | Reduced |
| Marshall Wace, LLP | 60,981 | $373.8K | 0.00% | −577,207−90.4% | Reduced |
| Quadrature Capital Ltd | 68,207 | $418.1K | 0.00% | −26,027−27.6% | Reduced |
| State Street Corp | 77,054 | $472.3K | 0.00% | −32,342−29.6% | Reduced |
| State of Wyoming | 88,458 | $542.2K | 0.05% | +88,458 | New |
| Gsa Capital Partners LLP | 95,899 | $588.0K | 0.04% | −56,206−37.0% | Reduced |
| Pathstone Holdings, LLC | 99,390 | $609.3K | 0.00% | +49,000+97.2% | Added |
| MYDA Advisors LLC | 100,000 | $613.0K | 0.15% | +100,000 | New |
| Two Sigma Investments, LP | 129,851 | $796.0K | 0.00% | +50,775+64.2% | Added |
| BlackRock, Inc. | 133,533 | $818.6K | 0.00% | +6,029+4.7% | Added |
| Susquehanna International Group, LLP | 138,417 | $848.5K | 0.00% | +138,417 | New |
| Antipodes Partners Ltd | 145,601 | $892.5K | 0.02% | +145,601 | New |
| D. E. Shaw & Co., Inc. | 159,935 | $980.4K | 0.00% | +101,383+173.2% | Added |
| Susquehanna Fundamental Investments, LLC | 169,885 | $1.04M | 0.02% | +44,262+35.2% | Added |
| Persistent Asset Partners Ltd | 180,000 | $1.10M | 0.35% | 00.0% | Unchanged |
| Lavelle Capital LP | 202,727 | $1.24M | 0.63% | 00.0% | Unchanged |
| Morgan Stanley | 268,203 | $1.64M | 0.00% | −323,660−54.7% | Reduced |
| Citadel Advisors LLC | 346,735 | $2.13M | 0.00% | −129,270−27.2% | Reduced |
| UBS Group AG | 403,328 | $2.47M | 0.00% | +204,785+103.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 445,691 | $2.73M | 0.01% | −87,943−16.5% | Reduced |
| PEAK6 LLC | 484,822 | $2.97M | 0.07% | +163,666+51.0% | Added |
| Jane Street Group, LLC | 513,277 | $3.15M | 0.00% | +282,011+121.9% | Added |
| Lotus Technology Management, LP | 531,409 | $3.40M | 4.21% | +531,409 | New |
| CenterBook Partners LP | 599,737 | $3.68M | 0.18% | −725,376−54.7% | Reduced |
| Sphera Management Technology Funds Ltd | 615,000 | $3.77M | 1.32% | 00.0% | Unchanged |
| P.A.W. Capital Corp | 640,000 | $3.92M | 3.00% | +140,000+28.0% | Added |
| Herald Investment Management Ltd | 645,465 | $3.96M | 0.54% | 00.0% | Unchanged |
| Nano Cap New Millennium Growth Fund L P | 650,000 | $3.98M | 3.06% | +260,000+66.7% | Added |
| Alpha Family Trust | 658,935 | $4.04M | 1.62% | 00.0% | Unchanged |
| CDC Financial, Inc. | 674,233 | $4.13M | 3.18% | +35,219+5.5% | Added |
| Renaissance Technologies LLC | 713,728 | $4.38M | 0.01% | −25,945−3.5% | Reduced |
| ARK Investment Management LLCSuperinvestorARK Invest | 834,663 | $5.12M | 0.03% | +482,593+137.1% | Added |
| Y.D. More Investments Ltd | 1,147,035 | $7.03M | 0.22% | −4,263−0.4% | Reduced |
| Schonfeld Strategic Advisors LLC | 1,210,629 | $7.42M | 0.04% | +921,455+318.7% | Added |
| S Squared Technology, LLC | 1,690,000 | $10.4M | 3.21% | +90,000+5.6% | Added |
| Ulysses Management LLC | 2,928,474 | $18.0M | 6.21% | −70,000−2.3% | Reduced |
| ION Crossover Partners Ltd | 3,030,826 | $18.6M | 24.88% | 00.0% | Unchanged |
| Wellington Management Group LLP | 3,624,685 | $22.2M | 0.00% | +657,928+22.2% | Added |
| Menora Mivtachim Holdings Ltd. | 4,015,494 | $24.6M | 0.10% | 00.0% | Unchanged |
| Viola Growth Management Fund 2 Ltd. | 10,810,778 | $66.3M | 88.48% | +10,810,778 | New |
| Naspers Ltd | 11,173,265 | $68.5M | 81.19% | 00.0% | Unchanged |
| 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 |