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 2023
Institutional positions in Similarweb Ltd. as of Dec 31, 2023. 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
- 55
- +5 vs. Q3 2023
- Shares held
- 38.6M
- −40.4K (−0.1%) vs. Q3 2023
- Total value
- $208.3M
- −$40.9M (−16.4%) vs. Q3 2023
- New holders
- 10
- 17 more added
- Sold out
- 5
- 12 more reduced
2 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2023: 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, Q4 2023
Shares, value and share of portfolio for each institution holding Similarweb Ltd.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Viola Ventures V.C. Management 4 Ltd. | 11,230,787 | $59.9M | 18.64% | 00.0% | Unchanged |
| Naspers Ltd | 11,173,265 | $59.6M | 6.63% | 00.0% | Unchanged |
| Phoenix Holdings Ltd. | 4,208,475 | $25.3M | 0.42% | 00.0% | Unchanged |
| Ulysses Management LLC | 2,283,228 | $12.2M | 3.00% | 00.0% | Unchanged |
| Portolan Capital Management, LLC | 1,912,272 | $10.2M | 0.89% | −636,360−25.0% | Reduced |
| Alpha Family Trust | 1,681,777 | $8.96M | 6.05% | 00.0% | Unchanged |
| Migdal Insurance & Financial Holdings Ltd. | 1,586,950 | $8.46M | 0.17% | 00.0% | Unchanged |
| Y.D. More Investments Ltd | 1,511,263 | $8.06M | 1.65% | 00.0% | Unchanged |
| ARK Investment Management LLCSuperinvestorARK Invest | 340,739 | $1.82M | 0.01% | +30,543+9.8% | Added |
| Old Well Partners, LLC | 247,417 | $1.32M | 1.23% | −5,940−2.3% | Reduced |
| Scalar Gauge Management, LLC | 222,919 | $1.19M | 1.13% | +222,919 | New |
| BlackRock Inc. | 221,165 | $1.18M | 0.00% | −2,447−1.1% | Reduced |
| Ameriprise Financial Inc | 155,664 | $829.7K | 0.00% | −23,756−13.2% | Reduced |
| Horrell Capital Management, Inc. | 136,000 | $725.0K | 0.22% | 00.0% | Unchanged |
| Circumference Group LLC | 136,000 | $724.9K | 0.81% | +136,000 | New |
| Millennium Management LLC | 134,090 | $714.7K | 0.00% | +108,248+418.9% | Added |
| Nuveen Asset Management, LLC | 127,127 | $677.6K | 0.00% | +127,127 | New |
| Renaissance Technologies LLC | 126,000 | $672.0K | 0.00% | +90,100+251.0% | Added |
| State Street Corp | 117,817 | $628.0K | 0.00% | +57,217+94.4% | Added |
| Gsa Capital Partners LLP | 107,208 | $571.0K | 0.05% | +19,486+22.2% | Added |
| Squarepoint Ops LLC | 97,855 | $521.6K | 0.00% | +36,158+58.6% | Added |
| Citadel Advisors LLC | 93,392 | $497.8K | 0.00% | +93,392 | New |
| Morgan Stanley | 90,539 | $482.6K | 0.00% | +4,738+5.5% | Added |
| Federated Hermes, Inc. | 55,000 | $293.1K | 0.00% | 00.0% | Unchanged |
| Swiss National Bank | 53,974 | $287.7K | 0.00% | −6,400−10.6% | Reduced |
| Two Sigma Investments, LP | 50,738 | $270.4K | 0.00% | +50,738 | New |
| UBS Group AG | 50,206 | $267.6K | 0.00% | +23,385+87.2% | Added |
| Marshall Wace, LLP | 47,523 | $253.3K | 0.00% | +8,516+21.8% | Added |
| D. E. Shaw & Co., Inc. | 46,202 | $246.3K | 0.00% | +35,999+352.8% | Added |
| Premier Fund Managers Ltd | 44,517 | $233.0K | 0.01% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 35,000 | $186.6K | 0.00% | +35,000 | New |
| Credit Suisse AG | 26,536 | $141.4K | 0.00% | +11,449+75.9% | Added |
| Vanguard Group Inc | 25,160 | $134.1K | 0.00% | 00.0% | Unchanged |
| Meitav Dash Investments Ltd | 25,000 | $132.2K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 24,417 | $130.1K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 19,955 | $106.4K | 0.00% | +1,200+6.4% | Added |
| Corton Capital Inc. | 19,066 | $101.6K | 0.03% | −2,529−11.7% | Reduced |
| Blair William & Co | 18,041 | $96.2K | 0.00% | −126,995−87.6% | Reduced |
| Occudo Quantitative Strategies LP | 17,418 | $92.8K | 0.01% | +3,162+22.2% | Added |
| Cubist Systematic Strategies, LLC | 10,046 | $53.5K | 0.00% | +10,046 | New |
| Barclays PLC | 9,790 | $52.2K | 0.00% | +4,824+97.1% | Added |
| Antipodes Partners Ltd | 9,166 | $48.0K | 0.00% | +4,974+118.7% | Added |
| Acadian Asset Management LLC | 7,318 | $39.0K | 0.00% | +7,318 | New |
| Deutsche Bank AG | 5,667 | $30.2K | 0.00% | +5,667 | New |
| Bank of America Corp | 3,728 | $19.9K | 0.00% | +1,910+105.1% | Added |
| Qube Research & Technologies Ltd | 2,957 | $15.8K | 0.00% | −17,660−85.7% | Reduced |
| Citigroup Inc | 2,347 | $12.5K | 0.00% | −673−22.3% | Reduced |
| JPMorgan Chase & Co | 1,869 | $9.96K | 0.00% | 00.0% | Unchanged |
| Harel Insurance Investments & Financial Services Ltd. | 1,484 | $8.00K | 0.00% | −236−13.7% | Reduced |
| Lazard Asset Management LLC | 1,200 | $6.00K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 819 | $4.37K | 0.00% | −2,319−73.9% | Reduced |
| Northwestern Mutual Wealth Management Co | 444 | $2.37K | 0.00% | +444 | New |
| Royal Bank of Canada | 375 | $2.00K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 440 | $2.00K | 0.00% | +89+25.4% | Added |
| FMR LLC | 6 | $32 | 0.00% | −3−33.3% | Reduced |
| 1492 Capital Management LLC | 0 | $0 | 0.00% | −150,750−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −136,243−100.0% | Sold out |
| Bamco Inc | 0 | $0 | 0.00% | −53,951−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −4,798−100.0% | Sold out |
| First Manhattan Co | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| ION Crossover Partners Ltd | – | – | – | – | Not filed |
| Pathstone Family Office, LLC | – | – | – | – | Not filed |