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 |
|---|---|---|---|---|---|
| FMR LLC | 6 | $32 | 0.00% | −3−33.3% | Reduced |
| Royal Bank of Canada | 375 | $2.00K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 440 | $2.00K | 0.00% | +89+25.4% | Added |
| Northwestern Mutual Wealth Management Co | 444 | $2.37K | 0.00% | +444 | New |
| Wells Fargo & Company | 819 | $4.37K | 0.00% | −2,319−73.9% | Reduced |
| Lazard Asset Management LLC | 1,200 | $6.00K | 0.00% | 00.0% | Unchanged |
| Harel Insurance Investments & Financial Services Ltd. | 1,484 | $8.00K | 0.00% | −236−13.7% | Reduced |
| JPMorgan Chase & Co | 1,869 | $9.96K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 2,347 | $12.5K | 0.00% | −673−22.3% | Reduced |
| Qube Research & Technologies Ltd | 2,957 | $15.8K | 0.00% | −17,660−85.7% | Reduced |
| Bank of America Corp | 3,728 | $19.9K | 0.00% | +1,910+105.1% | Added |
| Deutsche Bank AG | 5,667 | $30.2K | 0.00% | +5,667 | New |
| Acadian Asset Management LLC | 7,318 | $39.0K | 0.00% | +7,318 | New |
| Antipodes Partners Ltd | 9,166 | $48.0K | 0.00% | +4,974+118.7% | Added |
| Barclays PLC | 9,790 | $52.2K | 0.00% | +4,824+97.1% | Added |
| Cubist Systematic Strategies, LLC | 10,046 | $53.5K | 0.00% | +10,046 | New |
| Occudo Quantitative Strategies LP | 17,418 | $92.8K | 0.01% | +3,162+22.2% | Added |
| Blair William & Co | 18,041 | $96.2K | 0.00% | −126,995−87.6% | Reduced |
| Corton Capital Inc. | 19,066 | $101.6K | 0.03% | −2,529−11.7% | Reduced |
| Legal & General Group Plc | 19,955 | $106.4K | 0.00% | +1,200+6.4% | Added |
| California State Teachers Retirement System | 24,417 | $130.1K | 0.00% | 00.0% | Unchanged |
| Meitav Dash Investments Ltd | 25,000 | $132.2K | 0.00% | 00.0% | Unchanged |
| Vanguard Group Inc | 25,160 | $134.1K | 0.00% | 00.0% | Unchanged |
| Credit Suisse AG | 26,536 | $141.4K | 0.00% | +11,449+75.9% | Added |
| Pathstone Holdings, LLC | 35,000 | $186.6K | 0.00% | +35,000 | New |
| Premier Fund Managers Ltd | 44,517 | $233.0K | 0.01% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 46,202 | $246.3K | 0.00% | +35,999+352.8% | Added |
| Marshall Wace, LLP | 47,523 | $253.3K | 0.00% | +8,516+21.8% | Added |
| UBS Group AG | 50,206 | $267.6K | 0.00% | +23,385+87.2% | Added |
| Two Sigma Investments, LP | 50,738 | $270.4K | 0.00% | +50,738 | New |
| Swiss National Bank | 53,974 | $287.7K | 0.00% | −6,400−10.6% | Reduced |
| Federated Hermes, Inc. | 55,000 | $293.1K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 90,539 | $482.6K | 0.00% | +4,738+5.5% | Added |
| Citadel Advisors LLC | 93,392 | $497.8K | 0.00% | +93,392 | New |
| Squarepoint Ops LLC | 97,855 | $521.6K | 0.00% | +36,158+58.6% | Added |
| Gsa Capital Partners LLP | 107,208 | $571.0K | 0.05% | +19,486+22.2% | Added |
| State Street Corp | 117,817 | $628.0K | 0.00% | +57,217+94.4% | Added |
| Renaissance Technologies LLC | 126,000 | $672.0K | 0.00% | +90,100+251.0% | Added |
| Nuveen Asset Management, LLC | 127,127 | $677.6K | 0.00% | +127,127 | New |
| Millennium Management LLC | 134,090 | $714.7K | 0.00% | +108,248+418.9% | Added |
| Circumference Group LLC | 136,000 | $724.9K | 0.81% | +136,000 | New |
| Horrell Capital Management, Inc. | 136,000 | $725.0K | 0.22% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 155,664 | $829.7K | 0.00% | −23,756−13.2% | Reduced |
| BlackRock Inc. | 221,165 | $1.18M | 0.00% | −2,447−1.1% | Reduced |
| Scalar Gauge Management, LLC | 222,919 | $1.19M | 1.13% | +222,919 | New |
| Old Well Partners, LLC | 247,417 | $1.32M | 1.23% | −5,940−2.3% | Reduced |
| ARK Investment Management LLCSuperinvestorARK Invest | 340,739 | $1.82M | 0.01% | +30,543+9.8% | Added |
| Y.D. More Investments Ltd | 1,511,263 | $8.06M | 1.65% | 00.0% | Unchanged |
| Migdal Insurance & Financial Holdings Ltd. | 1,586,950 | $8.46M | 0.17% | 00.0% | Unchanged |
| Alpha Family Trust | 1,681,777 | $8.96M | 6.05% | 00.0% | Unchanged |
| Portolan Capital Management, LLC | 1,912,272 | $10.2M | 0.89% | −636,360−25.0% | Reduced |
| Ulysses Management LLC | 2,283,228 | $12.2M | 3.00% | 00.0% | Unchanged |
| Phoenix Holdings Ltd. | 4,208,475 | $25.3M | 0.42% | 00.0% | Unchanged |
| Naspers Ltd | 11,173,265 | $59.6M | 6.63% | 00.0% | Unchanged |
| Viola Ventures V.C. Management 4 Ltd. | 11,230,787 | $59.9M | 18.64% | 00.0% | Unchanged |
| 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 |