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, Q3 2021
Institutional positions in Similarweb Ltd. as of Sep 30, 2021. 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
- 34
- −13 vs. Q2 2021
- Shares held
- 14.5M
- −406.7K (−2.7%) vs. Q2 2021
- Total value
- $303.9M
- +$9.84M (+3.3%) vs. Q2 2021
- New holders
- 10
- 5 more added
- Sold out
- 23
- 13 more reduced
Compare with Q2 2021: 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, Q3 2021
Shares, value and share of portfolio for each institution holding Similarweb Ltd.; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Royal Bank of Canada | 100 | $2.00K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 227 | $5.00K | 0.00% | +227 | New |
| JPMorgan Chase & Co | 300 | $6.00K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 447 | $9.00K | 0.00% | −1,553−77.6% | Reduced |
| Signaturefd, LLC | 447 | $9.00K | 0.00% | +447 | New |
| SOA Wealth Advisors, LLC. | 1,000 | $20.0K | 0.01% | +1,000 | New |
| Altshuler Shaham Ltd | 9,410 | $198.0K | 0.00% | +9,410 | New |
| Citigroup Inc | 9,796 | $205.0K | 0.00% | −18,123−64.9% | Reduced |
| Teacher Retirement System of Texas | 10,000 | $209.0K | 0.00% | 00.0% | Unchanged |
| Man Group plc | 10,623 | $222.0K | 0.00% | −14,177−57.2% | Reduced |
| Morgan Stanley | 10,600 | $222.0K | 0.00% | +1,700+19.1% | Added |
| ExodusPoint Capital Management, LP | 20,295 | $425.0K | 0.01% | +20,295 | New |
| Laurion Capital Management LP | 25,700 | $538.0K | 0.01% | −9,300−26.6% | Reduced |
| Arena Capital Advisors, LLC- CA | 31,443 | $658.0K | 0.05% | −8,557−21.4% | Reduced |
| Citadel Advisors LLC | 38,538 | $806.0K | 0.00% | −80,562−67.6% | Reduced |
| Calamos Advisors LLC | 39,710 | $831.0K | 0.00% | +39,710 | New |
| Russell Investments Group, Ltd. | 42,738 | $893.0K | 0.00% | +42,738 | New |
| Marshall Wace, LLP | 49,022 | $1.03M | 0.01% | −84,417−63.3% | Reduced |
| G2 Investment Partners Management LLC | 97,682 | $2.04M | 0.35% | +97,682 | New |
| Woodline Partners LP | 103,380 | $2.16M | 0.04% | −620−0.6% | Reduced |
| BIT Capital GmbH | 130,450 | $2.73M | 0.16% | +130,450 | New |
| ARK Investment Management LLCSuperinvestorARK Invest | 155,712 | $3.26M | 0.01% | +155,712 | New |
| Tudor Investment Corp Et Al | 185,475 | $3.88M | 0.08% | −33,481−15.3% | Reduced |
| Ghisallo Capital Management LLC | 230,734 | $4.83M | 0.18% | 00.0% | Unchanged |
| Millennium Management LLC | 375,350 | $7.86M | 0.01% | −42,426−10.2% | Reduced |
| Ion Asset Management Ltd. | 394,480 | $8.26M | 1.13% | −657,273−62.5% | Reduced |
| Bamco Inc | 535,942 | $11.2M | 0.03% | +17,980+3.5% | Added |
| Capital Research Global Investors | 571,900 | $12.0M | 0.00% | 00.0% | Unchanged |
| BlackRock Inc. | 574,757 | $12.0M | 0.00% | −125,210−17.9% | Reduced |
| Macquarie Group Ltd | 609,534 | $12.8M | 0.01% | +389,301+176.8% | Added |
| Migdal Insurance & Financial Holdings Ltd. | 894,930 | $18.7M | 0.20% | +244,443+37.6% | Added |
| Alpha Family Trust | 1,681,777 | $35.2M | 11.40% | −5,055−0.3% | Reduced |
| FMR LLC | 1,905,354 | $39.9M | 0.00% | +1,205,159+172.1% | Added |
| ION Crossover Partners Ltd | 5,772,183 | $120.8M | 26.40% | 00.0% | Unchanged |
| Luminus Management LLC | 0 | $0 | 0.00% | −808,015−100.0% | Sold out |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| Zimmer Partners, LP | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Davidson Kempner Capital Management LP | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Caas Capital Management LP | 0 | $0 | 0.00% | −75,000−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −63,874−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −60,000−100.0% | Sold out |
| HBK Investments L P | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −40,000−100.0% | Sold out |
| Norges Bank | 0 | $0 | 0.00% | −35,000−100.0% | Sold out |
| Alyeska Investment Group, L.P. | 0 | $0 | 0.00% | −35,000−100.0% | Sold out |
| Phoenix Holdings Ltd. | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Noked Capital LTD | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Noked Israel Ltd | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Pentwater Capital Management LP | 0 | $0 | 0.00% | −17,000−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −12,174−100.0% | Sold out |
| Gilder Gagnon Howe & Co LLC | 0 | $0 | 0.00% | −12,000−100.0% | Sold out |
| Carmignac Gestion | 0 | $0 | 0.00% | −12,000−100.0% | Sold out |
| Rokos Capital Management LLP | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −2,137−100.0% | Sold out |
| Point72 Hong Kong Ltd | 0 | $0 | 0.00% | −22−100.0% | Sold out |
| Carolina Wealth Advisors, LLC | 0 | $0 | 0.00% | −23−100.0% | Sold out |