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 2025
Institutional positions in Similarweb Ltd. as of Dec 31, 2025. 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
- 100
- +8 vs. Q3 2025
- Shares held
- 60.7M
- +4.27M (+7.6%) vs. Q3 2025
- Total value
- $454.1M
- −$70.9M (−13.5%) vs. Q3 2025
- New holders
- 19
- 30 more added
- Sold out
- 11
- 32 more reduced
3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: 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 2025
Shares, value and share of portfolio for each institution holding Similarweb Ltd.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Scalar Gauge Management, LLC | 0 | $0 | 0.00% | −441,742−100.0% | Sold out |
| Essex Investment Management Co LLC | 0 | $0 | 0.00% | −380,793−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −322,321−100.0% | Sold out |
| Ceera Investments, LLC | 0 | $0 | 0.00% | −319,027−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −109,711−100.0% | Sold out |
| State of Tennessee, Treasury Department | 0 | $0 | 0.00% | −13,617−100.0% | Sold out |
| Cresset Asset Management, LLC | 0 | $0 | 0.00% | −10,468−100.0% | Sold out |
| Wexford Capital LP | 0 | $0 | 0.00% | −6,860−100.0% | Sold out |
| Larson Financial Group LLC | 0 | $0 | 0.00% | −2,686−100.0% | Sold out |
| CWM, LLC | 0 | $0 | 0.00% | −1,139−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −986−100.0% | Sold out |
| Wolverine Trading, LLC | – | – | – | – | Not filed |
| Cubist Systematic Strategies, LLC | – | – | – | – | Not filed |
| Fullcircle Wealth LLC | – | – | – | – | Not filed |