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 2024
Institutional positions in Similarweb Ltd. as of Mar 31, 2024. 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
- 74
- +19 vs. Q4 2023
- Shares held
- 41.2M
- +2.67M (+6.9%) vs. Q4 2023
- Total value
- $370.7M
- +$162.4M (+77.9%) vs. Q4 2023
- New holders
- 23
- 21 more added
- Sold out
- 4
- 17 more reduced
Compare with Q4 2023: 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 2024
Shares, value and share of portfolio for each institution holding Similarweb Ltd.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Viola Ventures V.C. Management 4 Ltd. | 11,230,787 | $101.1M | 37.06% | 00.0% | Unchanged |
| Naspers Ltd | 11,173,265 | $100.6M | 9.22% | 00.0% | Unchanged |
| Phoenix Holdings Ltd. | 3,536,932 | $31.8M | 0.44% | −671,543−16.0% | Reduced |
| Ulysses Management LLC | 2,283,228 | $20.5M | 4.45% | 00.0% | Unchanged |
| Migdal Insurance & Financial Holdings Ltd. | 2,107,541 | $19.0M | 0.30% | +520,591+32.8% | Added |
| Portolan Capital Management, LLC | 2,040,602 | $18.4M | 1.40% | +128,330+6.7% | Added |
| Alpha Family Trust | 1,681,777 | $14.8M | 8.94% | 00.0% | Unchanged |
| Y.D. More Investments Ltd | 1,314,263 | $11.8M | 2.10% | −197,000−13.0% | Reduced |
| ARK Investment Management LLCSuperinvestorARK Invest | 384,230 | $3.46M | 0.02% | +43,491+12.8% | Added |
| Scalar Gauge Management, LLC | 378,702 | $3.41M | 2.62% | +155,783+69.9% | Added |
| Russell Investments Group, Ltd. | 313,318 | $2.82M | 0.00% | +313,318 | New |
| S Squared Technology, LLC | 308,023 | $2.77M | 1.27% | +308,023 | New |
| Acadian Asset Management LLC | 275,417 | $2.47M | 0.01% | +268,099+3,663.6% | Added |
| Roubaix Capital, LLC | 272,092 | $2.45M | 1.55% | +272,092 | New |
| Nuveen Asset Management, LLC | 263,280 | $2.37M | 0.00% | +136,153+107.1% | Added |
| BlackRock Inc. | 261,862 | $2.36M | 0.00% | +40,697+18.4% | Added |
| Essex Investment Management Co LLC | 260,450 | $2.34M | 0.46% | +260,450 | New |
| Millennium Management LLC | 233,244 | $2.10M | 0.00% | +99,154+73.9% | Added |
| Ceera Investments, LLC | 187,833 | $1.69M | 0.74% | +187,833 | New |
| Walleye Capital LLC | 183,494 | $1.65M | 0.02% | +183,494 | New |
| Old Well Partners, LLC | 156,419 | $1.41M | 1.25% | −90,998−36.8% | Reduced |
| Two Sigma Investments, LP | 132,497 | $1.19M | 0.00% | +81,759+161.1% | Added |
| Marshall Wace, LLP | 127,079 | $1.14M | 0.00% | +79,556+167.4% | Added |
| State Street Corp | 126,617 | $1.14M | 0.00% | +8,800+7.5% | Added |
| Ameriprise Financial Inc | 113,093 | $1.02M | 0.00% | −42,571−27.3% | Reduced |
| Circumference Group LLC | 109,461 | $985.1K | 1.02% | −26,539−19.5% | Reduced |
| Horrell Capital Management, Inc. | 109,461 | $985.0K | 0.27% | −26,539−19.5% | Reduced |
| Renaissance Technologies LLC | 106,001 | $954.0K | 0.00% | −19,999−15.9% | Reduced |
| Calamos Advisors LLC | 98,885 | $890.0K | 0.00% | +98,885 | New |
| Legato Capital Management LLC | 98,532 | $886.8K | 0.11% | +98,532 | New |
| Squarepoint Ops LLC | 96,401 | $867.6K | 0.00% | −1,454−1.5% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 91,915 | $827.2K | 0.00% | +91,915 | New |
| D. E. Shaw & Co., Inc. | 91,389 | $822.5K | 0.00% | +45,187+97.8% | Added |
| Morgan Stanley | 88,333 | $795.0K | 0.00% | −2,206−2.4% | Reduced |
| Oppenheimer & Co Inc | 72,640 | $653.8K | 0.01% | +72,640 | New |
| UBS Group AG | 70,142 | $631.3K | 0.00% | +19,936+39.7% | Added |
| Gsa Capital Partners LLP | 69,272 | $623.0K | 0.05% | −37,936−35.4% | Reduced |
| Bank of America Corp | 54,488 | $490.4K | 0.00% | +50,760+1,361.6% | Added |
| Two Sigma Advisers, LP | 54,400 | $489.6K | 0.00% | +54,400 | New |
| Swiss National Bank | 53,974 | $485.8K | 0.00% | 00.0% | Unchanged |
| Atom Investors LP | 53,899 | $485.1K | 0.06% | +53,899 | New |
| Cubist Systematic Strategies, LLC | 49,134 | $442.2K | 0.01% | +39,088+389.1% | Added |
| Premier Fund Managers Ltd | 44,517 | $400.0K | 0.02% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 35,000 | $315.0K | 0.00% | 00.0% | Unchanged |
| Quadrature Capital Ltd | 34,593 | $311.0K | 0.01% | +34,593 | New |
| Trexquant Investment LP | 33,830 | $304.5K | 0.01% | +33,830 | New |
| XTX Topco Ltd | 30,214 | $271.9K | 0.04% | +30,214 | New |
| Jump Financial, LLC | 30,100 | $270.9K | 0.01% | +30,100 | New |
| California State Teachers Retirement System | 26,892 | $242.0K | 0.00% | +2,475+10.1% | Added |
| Legal & General Group Plc | 26,053 | $234.5K | 0.00% | +6,098+30.6% | Added |
| Occudo Quantitative Strategies LP | 25,973 | $233.8K | 0.04% | +8,555+49.1% | Added |
| Vanguard Group Inc | 25,160 | $226.4K | 0.00% | 00.0% | Unchanged |
| Meitav Dash Investments Ltd | 25,000 | $225.0K | 0.00% | 00.0% | Unchanged |
| Blair William & Co | 21,662 | $195.0K | 0.00% | +3,621+20.1% | Added |
| JPMorgan Chase & Co | 21,661 | $194.9K | 0.00% | +19,792+1,059.0% | Added |
| Jane Street Group, LLC | 20,923 | $188.3K | 0.00% | +20,923 | New |
| Corton Capital Inc. | 20,252 | $182.3K | 0.07% | +1,186+6.2% | Added |
| Credit Suisse AG | 19,050 | $171.4K | 0.00% | −7,486−28.2% | Reduced |
| Citadel Advisors LLC | 17,196 | $154.8K | 0.00% | −76,196−81.6% | Reduced |
| Counterpoint Mutual Funds LLC | 15,102 | $135.9K | 0.03% | +15,102 | New |
| Verition Fund Management LLC | 10,700 | $96.3K | 0.00% | +10,700 | New |
| Barclays PLC | 9,790 | $88.1K | 0.00% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 7,847 | $70.6K | 0.00% | +7,847 | New |
| Deutsche Bank AG | 5,667 | $51.0K | 0.00% | 00.0% | Unchanged |
| Antipodes Partners Ltd | 5,204 | $47.0K | 0.00% | −3,962−43.2% | Reduced |
| Qube Research & Technologies Ltd | 1,595 | $14.4K | 0.00% | −1,362−46.1% | Reduced |
| Citigroup Inc | 1,271 | $11.4K | 0.00% | −1,076−45.8% | Reduced |
| Harel Insurance Investments & Financial Services Ltd. | 1,140 | $10.0K | 0.00% | −344−23.2% | Reduced |
| Wells Fargo & Company | 819 | $7.37K | 0.00% | 00.0% | Unchanged |
| Quarry LP | 718 | $6.46K | 0.00% | +718 | New |
| Tower Research Capital LLC (TRC) | 417 | $3.75K | 0.00% | +417 | New |
| Royal Bank of Canada | 374 | $3.00K | 0.00% | −1−0.3% | Reduced |
| GWM Advisors LLC | 109 | $981 | 0.00% | +109 | New |
| FMR LLC | 6 | $54 | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −55,000−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −1,200−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −444−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −440−100.0% | Sold out |