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, Q1 2025
Institutional positions in Similarweb Ltd. as of Mar 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
- 110
- −1 vs. Q4 2024
- Shares held
- 55.7M
- +3.94M (+7.6%) vs. Q4 2024
- Total value
- $460.5M
- −$272.7M (−37.2%) vs. Q4 2024
- New holders
- 25
- 32 more added
- Sold out
- 26
- 40 more reduced
2 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Similarweb Ltd.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Scalar Gauge Management, LLC | 1,213,199 | $10.0M | 6.14% | +97,421+8.7% | Added |
| Y.D. More Investments Ltd | 1,399,863 | $11.6M | 1.01% | −49,771−3.4% | Reduced |
| T. Rowe Price Investment Management, Inc. | 1,410,826 | $11.7M | 0.01% | +736,004+109.1% | Added |
| Jennison Associates LLC | 1,892,110 | $15.6M | 0.01% | +53,055+2.9% | Added |
| Menora Mivtachim Holdings Ltd. | 2,246,470 | $18.6M | 0.12% | +560,000+33.2% | Added |
| Phoenix Holdings Ltd. | 2,585,985 | $21.4M | 0.33% | +63,978+2.5% | Added |
| Ulysses Management LLC | 2,748,708 | $22.7M | 5.75% | +465,480+20.4% | Added |
| Migdal Insurance & Financial Holdings Ltd. | 2,762,557 | $22.8M | 0.32% | +1,050,000+61.3% | Added |
| Viola Ventures V.C. Management 4 Ltd. | 10,810,778 | $89.4M | 44.98% | 00.0% | Unchanged |
| Naspers Ltd | 11,173,265 | $92.4M | 8.92% | 00.0% | Unchanged |
| Next Century Growth Investors LLC | 0 | $0 | 0.00% | −699,128−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −478,417−100.0% | Sold out |
| Alyeska Investment Group, L.P. | 0 | $0 | 0.00% | −375,000−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −255,406−100.0% | Sold out |
| Old Well Partners, LLC | 0 | $0 | 0.00% | −156,419−100.0% | Sold out |
| Panoramic Capital, LLC | 0 | $0 | 0.00% | −125,000−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −73,655−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −68,218−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −68,171−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −67,300−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −52,175−100.0% | Sold out |
| Militia Capital Partners, LP | 0 | $0 | 0.00% | −49,800−100.0% | Sold out |
| Numerai GP LLC | 0 | $0 | 0.00% | −38,668−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −38,638−100.0% | Sold out |
| EAM Global Investors LLC | 0 | $0 | 0.00% | −35,219−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −24,529−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −22,841−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −18,623−100.0% | Sold out |
| Natixis Advisors, L.P. | 0 | $0 | 0.00% | −18,017−100.0% | Sold out |
| Federation des caisses Desjardins du Quebec | 0 | $0 | 0.00% | −16,144−100.0% | Sold out |
| State of New Jersey Common Pension Fund D | 0 | $0 | 0.00% | −13,785−100.0% | Sold out |
| Corton Capital Inc. | 0 | $0 | 0.00% | −12,097−100.0% | Sold out |
| International Assets Investment Management, LLC | 0 | $0 | 0.00% | −10,990−100.0% | Sold out |
| New York State Common Retirement Fund | 0 | $0 | 0.00% | −2,754−100.0% | Sold out |
| MCF Advisors LLC | 0 | $0 | 0.00% | −842−100.0% | Sold out |
| Farther Finance Advisors, LLC | 0 | $0 | 0.00% | −23−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |