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 |
|---|---|---|---|---|---|
| Viola Ventures V.C. Management 4 Ltd. | 12,035,804 | $81.4M | 17.41% | +80,502+0.7% | Added |
| Naspers Ltd | 11,173,265 | $75.5M | 7.69% | 00.0% | Unchanged |
| ION Crossover Partners Ltd | 5,772,183 | $39.0M | 89.24% | 00.0% | Unchanged |
| Portolan Capital Management, LLC | 2,299,074 | $15.5M | 1.48% | +1,410,890+158.9% | Added |
| Ulysses Management LLC | 2,267,267 | $15.3M | 4.62% | 00.0% | Unchanged |
| Alpha Family Trust | 1,681,777 | $11.4M | 9.00% | 00.0% | Unchanged |
| Migdal Insurance & Financial Holdings Ltd. | 1,586,950 | $10.7M | 0.24% | 00.0% | Unchanged |
| Phoenix Holdings Ltd. | 843,004 | $5.70M | 0.13% | +843,004 | New |
| Union Investments & Development Ltd. | 724,515 | $4.90M | 2.82% | +82,553+12.9% | Added |
| ARK Investment Management LLCSuperinvestorARK Invest | 395,490 | $2.67M | 0.02% | +60,507+18.1% | Added |
| Old Well Partners, LLC | 266,357 | $1.80M | 1.42% | −29,947−10.1% | Reduced |
| Premier Fund Managers Ltd | 265,855 | $1.80M | 0.07% | 00.0% | Unchanged |
| Blair William & Co | 240,344 | $1.62M | 0.01% | −46,121−16.1% | Reduced |
| Tudor Investment Corp Et Al | 136,244 | $921.0K | 0.02% | 00.0% | Unchanged |
| Horrell Capital Management, Inc. | 136,000 | $919.0K | 0.29% | +50,000+58.1% | Added |
| Ameriprise Financial Inc | 125,736 | $850.0K | 0.00% | +125,736 | New |
| Marshall Wace, LLP | 69,840 | $472.1K | 0.00% | +46,667+201.4% | Added |
| Morgan Stanley | 68,382 | $462.3K | 0.00% | +53,064+346.4% | Added |
| Gsa Capital Partners LLP | 67,879 | $459.0K | 0.05% | +67,879 | New |
| Bamco Inc | 53,635 | $362.6K | 0.00% | −75,252−58.4% | Reduced |
| Federated Hermes, Inc. | 40,000 | $270.4K | 0.00% | +40,000 | New |
| Millennium Management LLC | 39,788 | $269.0K | 0.00% | +39,788 | New |
| Veritable, L.P. | 35,000 | $236.6K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 33,538 | $226.7K | 0.00% | +33,538 | New |
| Citadel Advisors LLC | 32,076 | $216.8K | 0.00% | +32,076 | New |
| Renaissance Technologies LLC | 30,700 | $208.0K | 0.00% | +8,300+37.1% | Added |
| Ergoteles LLC | 25,816 | $174.5K | 0.01% | +25,816 | New |
| Meitav Dash Investments Ltd | 25,000 | $169.1K | 0.00% | −525,821−95.5% | Reduced |
| UBS Group AG | 23,666 | $160.0K | 0.00% | +21,700+1,103.8% | Added |
| Yarbrough Capital, LLC | 17,200 | $116.3K | 0.01% | 00.0% | Unchanged |
| PDT Partners, LLC | 14,256 | $96.4K | 0.01% | −2,400−14.4% | Reduced |
| Qube Research & Technologies Ltd | 13,617 | $92.1K | 0.00% | +13,617 | New |
| Lazard Asset Management LLC | 6,729 | $45.0K | 0.00% | −725−9.7% | Reduced |
| Citigroup Inc | 3,749 | $25.3K | 0.00% | −366−8.9% | Reduced |
| Harel Insurance Investments & Financial Services Ltd. | 3,210 | $22.0K | 0.00% | +1,025+46.9% | Added |
| Wells Fargo & Company | 3,138 | $21.2K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 1,332 | $9.00K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 686 | $5.00K | 0.00% | +386+128.7% | Added |
| Signaturefd, LLC | 447 | $3.02K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 432 | $3.00K | 0.00% | +375+657.9% | Added |
| Stonebridge Capital Advisors LLC | 33 | $223 | 0.00% | +33 | New |
| FMR LLC | 6 | $41 | 0.00% | 00.0% | Unchanged |
| 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 |