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 2023
Institutional positions in Similarweb Ltd. as of Mar 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
- 42
- −4 vs. Q4 2022
- Shares held
- 40.6M
- −5.59K (0.0%) vs. Q4 2022
- Total value
- $274.2M
- +$15.2M (+5.9%) vs. Q4 2022
- New holders
- 10
- 12 more added
- Sold out
- 14
- 7 more reduced
1 institution that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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 2023
Shares, value and share of portfolio for each institution holding Similarweb Ltd.; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 6 | $41 | 0.00% | 00.0% | Unchanged |
| Stonebridge Capital Advisors LLC | 33 | $223 | 0.00% | +33 | New |
| Royal Bank of Canada | 432 | $3.00K | 0.00% | +375+657.9% | Added |
| Signaturefd, LLC | 447 | $3.02K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 686 | $5.00K | 0.00% | +386+128.7% | Added |
| Bank of America Corp | 1,332 | $9.00K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 3,138 | $21.2K | 0.00% | 00.0% | Unchanged |
| Harel Insurance Investments & Financial Services Ltd. | 3,210 | $22.0K | 0.00% | +1,025+46.9% | Added |
| Citigroup Inc | 3,749 | $25.3K | 0.00% | −366−8.9% | Reduced |
| Lazard Asset Management LLC | 6,729 | $45.0K | 0.00% | −725−9.7% | Reduced |
| Qube Research & Technologies Ltd | 13,617 | $92.1K | 0.00% | +13,617 | New |
| PDT Partners, LLC | 14,256 | $96.4K | 0.01% | −2,400−14.4% | Reduced |
| Yarbrough Capital, LLC | 17,200 | $116.3K | 0.01% | 00.0% | Unchanged |
| UBS Group AG | 23,666 | $160.0K | 0.00% | +21,700+1,103.8% | Added |
| Meitav Dash Investments Ltd | 25,000 | $169.1K | 0.00% | −525,821−95.5% | Reduced |
| Ergoteles LLC | 25,816 | $174.5K | 0.01% | +25,816 | New |
| Renaissance Technologies LLC | 30,700 | $208.0K | 0.00% | +8,300+37.1% | Added |
| Citadel Advisors LLC | 32,076 | $216.8K | 0.00% | +32,076 | New |
| Goldman Sachs Group Inc | 33,538 | $226.7K | 0.00% | +33,538 | New |
| Veritable, L.P. | 35,000 | $236.6K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 39,788 | $269.0K | 0.00% | +39,788 | New |
| Federated Hermes, Inc. | 40,000 | $270.4K | 0.00% | +40,000 | New |
| Bamco Inc | 53,635 | $362.6K | 0.00% | −75,252−58.4% | Reduced |
| Gsa Capital Partners LLP | 67,879 | $459.0K | 0.05% | +67,879 | New |
| Morgan Stanley | 68,382 | $462.3K | 0.00% | +53,064+346.4% | Added |
| Marshall Wace, LLP | 69,840 | $472.1K | 0.00% | +46,667+201.4% | Added |
| Ameriprise Financial Inc | 125,736 | $850.0K | 0.00% | +125,736 | New |
| Horrell Capital Management, Inc. | 136,000 | $919.0K | 0.29% | +50,000+58.1% | Added |
| Tudor Investment Corp Et Al | 136,244 | $921.0K | 0.02% | 00.0% | Unchanged |
| Blair William & Co | 240,344 | $1.62M | 0.01% | −46,121−16.1% | Reduced |
| Premier Fund Managers Ltd | 265,855 | $1.80M | 0.07% | 00.0% | Unchanged |
| Old Well Partners, LLC | 266,357 | $1.80M | 1.42% | −29,947−10.1% | Reduced |
| ARK Investment Management LLCSuperinvestorARK Invest | 395,490 | $2.67M | 0.02% | +60,507+18.1% | Added |
| Union Investments & Development Ltd. | 724,515 | $4.90M | 2.82% | +82,553+12.9% | Added |
| Phoenix Holdings Ltd. | 843,004 | $5.70M | 0.13% | +843,004 | New |
| Migdal Insurance & Financial Holdings Ltd. | 1,586,950 | $10.7M | 0.24% | 00.0% | Unchanged |
| Alpha Family Trust | 1,681,777 | $11.4M | 9.00% | 00.0% | Unchanged |
| Ulysses Management LLC | 2,267,267 | $15.3M | 4.62% | 00.0% | Unchanged |
| Portolan Capital Management, LLC | 2,299,074 | $15.5M | 1.48% | +1,410,890+158.9% | Added |
| ION Crossover Partners Ltd | 5,772,183 | $39.0M | 89.24% | 00.0% | Unchanged |
| Naspers Ltd | 11,173,265 | $75.5M | 7.69% | 00.0% | Unchanged |
| Viola Ventures V.C. Management 4 Ltd. | 12,035,804 | $81.4M | 17.41% | +80,502+0.7% | Added |
| Y.D. More Investments Ltd | 0 | $0 | 0.00% | −1,511,866−100.0% | Sold out |
| BlackRock Inc. | 0 | $0 | 0.00% | −248,701−100.0% | Sold out |
| Baader Bank INC | 0 | $0 | 0.00% | −246,970−100.0% | Sold out |
| State Street Corp | 0 | $0 | 0.00% | −111,634−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −59,827−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −44,388−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −33,200−100.0% | Sold out |
| Belvedere Trading LLC | 0 | $0 | 0.00% | −29,495−100.0% | Sold out |
| California State Teachers Retirement System | 0 | $0 | 0.00% | −20,295−100.0% | Sold out |
| Vanguard Group Inc | 0 | $0 | 0.00% | −17,096−100.0% | Sold out |
| Credit Suisse AG | 0 | $0 | 0.00% | −17,011−100.0% | Sold out |
| CAPROCK Group, Inc. | 0 | $0 | 0.00% | −12,500−100.0% | Sold out |
| Antipodes Partners Ltd | 0 | $0 | 0.00% | −5,263−100.0% | Sold out |
| Legal & General Group Plc | 0 | $0 | 0.00% | −4,171−100.0% | Sold out |
| North Run Capital, LP | – | – | – | – | Not filed |