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 |
|---|---|---|---|---|---|
| Coldstream Capital Management Inc | 4 | $33 | 0.00% | +4 | New |
| FMR LLC | 6 | $50 | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 100 | $836 | 0.00% | −41−29.1% | Reduced |
| GWM Advisors LLC | 109 | $901 | 0.00% | −1,604−93.6% | Reduced |
| SBI Securities Co., Ltd. | 200 | $1.65K | 0.00% | +200 | New |
| Wells Fargo & Company | 248 | $2.05K | 0.00% | −10−3.9% | Reduced |
| Tower Research Capital LLC (TRC) | 408 | $3.37K | 0.00% | +373+1,065.7% | Added |
| Advisor Group Holdings, Inc. | 650 | $5.37K | 0.00% | −7,459−92.0% | Reduced |
| Aquatic Capital Management LLC | 710 | $5.87K | 0.00% | +710 | New |
| Royal Bank of Canada | 1,300 | $11.0K | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 2,203 | $18.0K | 0.01% | −77−3.4% | Reduced |
| Citigroup Inc | 2,420 | $20.0K | 0.00% | +44+1.9% | Added |
| Deutsche Bank AG | 5,667 | $46.9K | 0.00% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 8,100 | $67.0K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 8,438 | $69.8K | 0.00% | −2,508−22.9% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 8,873 | $73.4K | 0.00% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 10,500 | $86.8K | 0.00% | +600+6.1% | Added |
| Keybank National Association | 11,330 | $93.7K | 0.00% | 00.0% | Unchanged |
| Eqis Capital Management, Inc. | 11,551 | $95.5K | 0.01% | −1,961−14.5% | Reduced |
| Fullcircle Wealth LLC | 14,140 | $106.2K | 0.04% | +14,140 | New |
| Verition Fund Management LLC | 15,468 | $127.9K | 0.00% | −7,776−33.5% | Reduced |
| D. E. Shaw & Co., Inc. | 16,150 | $133.6K | 0.00% | −276,434−94.5% | Reduced |
| Antipodes Partners Ltd | 16,166 | $133.7K | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 17,059 | $141.1K | 0.00% | +17,059 | New |
| B. Riley Asset Management, LLC | 17,675 | $146.2K | 0.39% | +17,675 | New |
| Teacher Retirement System of Texas | 18,362 | $151.9K | 0.00% | +7,566+70.1% | Added |
| Meitav Dash Investments Ltd | 19,075 | $157.8K | 0.00% | +6,229+48.5% | Added |
| Lazard Asset Management LLC | 20,092 | $166.0K | 0.00% | −56,323−73.7% | Reduced |
| LPL Financial LLC | 20,591 | $170.3K | 0.00% | +20,591 | New |
| Goldman Sachs Group Inc | 20,899 | $172.8K | 0.00% | −56,227−72.9% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 21,032 | $173.9K | 0.00% | +2,825+15.5% | Added |
| Quadrature Capital Ltd | 21,264 | $175.9K | 0.00% | −6,736−24.1% | Reduced |
| Engineers Gate Manager LP | 21,503 | $177.8K | 0.00% | +21,503 | New |
| HRT Financial LP | 24,527 | $202.0K | 0.00% | −6,490−20.9% | Reduced |
| Millennium Management LLC | 25,454 | $210.5K | 0.00% | −82,874−76.5% | Reduced |
| Susquehanna International Group, LLP | 30,337 | $250.9K | 0.00% | +30,337 | New |
| Y-Intercept (Hong Kong) Ltd | 31,219 | $258.2K | 0.02% | +31,219 | New |
| Federated Hermes, Inc. | 31,500 | $260.5K | 0.00% | +31,500 | New |
| Pathstone Holdings, LLC | 33,010 | $273.0K | 0.00% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 33,730 | $278.9K | 0.00% | 00.0% | Unchanged |
| Cresset Asset Management, LLC | 34,867 | $288.4K | 0.00% | −11,461−24.7% | Reduced |
| Vanguard Group Inc | 35,291 | $291.9K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 36,500 | $301.9K | 0.00% | −7,100−16.3% | Reduced |
| Toroso Investments, LLC | 37,006 | $306.0K | 0.00% | −3,635−8.9% | Reduced |
| Legal & General Group Plc | 38,139 | $315.4K | 0.00% | −1,232−3.1% | Reduced |
| California State Teachers Retirement System | 38,298 | $316.7K | 0.00% | 00.0% | Unchanged |
| Cetera Investment Advisers | 40,161 | $332.1K | 0.00% | +40,161 | New |
| Simplex Trading, LLC | 40,314 | $333.0K | 0.01% | +40,314 | New |
| PEAK6 LLC | 45,178 | $373.6K | 0.01% | +45,178 | New |
| Quantbot Technologies LP | 46,600 | $385.4K | 0.01% | +16,948+57.2% | Added |
| Papamarkou Wellner Asset Management inc. | 49,092 | $406.0K | 0.28% | +49,092 | New |
| UBS Asset Management Americas Inc | 50,092 | $414.3K | 0.00% | +34,180+214.8% | Added |
| Point72 Asset Management, L.P. | 59,469 | $491.8K | 0.00% | −35,011−37.1% | Reduced |
| Bailard, Inc. | 61,256 | $506.6K | 0.01% | +15,799+34.8% | Added |
| Hood River Capital Management LLC | 65,000 | $537.5K | 0.01% | +65,000 | New |
| UBS Group AG | 65,254 | $539.7K | 0.00% | −149,642−69.6% | Reduced |
| BNP Paribas Arbitrage, SA | 73,811 | $610.4K | 0.00% | −14,690−16.6% | Reduced |
| Legato Capital Management LLC | 78,009 | $645.1K | 0.09% | −1,198−1.5% | Reduced |
| Swiss National Bank | 79,674 | $658.9K | 0.00% | −1,300−1.6% | Reduced |
| Lombard Odier Asset Management (USA) Corp | 80,000 | $661.6K | 0.22% | +80,000 | New |
| Northern Trust Corp | 82,926 | $685.8K | 0.00% | +16,649+25.1% | Added |
| Calamos Advisors LLC | 84,173 | $696.1K | 0.00% | −86,994−50.8% | Reduced |
| Blair William & Co | 87,395 | $722.8K | 0.00% | −10,458−10.7% | Reduced |
| PDT Partners, LLC | 94,671 | $782.9K | 0.06% | +56,991+151.3% | Added |
| Palogic Value Management, L.P. | 104,423 | $863.6K | 0.38% | +104,423 | New |
| Oppenheimer & Co Inc | 105,045 | $868.7K | 0.01% | −6,104−5.5% | Reduced |
| ARK Investment Management LLCSuperinvestorARK Invest | 120,751 | $998.6K | 0.01% | −82,923−40.7% | Reduced |
| Two Sigma Investments, LP | 129,063 | $1.07M | 0.00% | −126,309−49.5% | Reduced |
| Bank of America Corp | 139,954 | $1.16M | 0.00% | −136,981−49.5% | Reduced |
| Ameriprise Financial Inc | 145,865 | $1.21M | 0.00% | +145,865 | New |
| Voloridge Investment Management, LLC | 162,704 | $1.35M | 0.00% | +162,704 | New |
| Acadian Asset Management LLC | 185,065 | $1.53M | 0.00% | −703,577−79.2% | Reduced |
| Cubist Systematic Strategies, LLC | 185,502 | $1.53M | 0.02% | +82,536+80.2% | Added |
| JPMorgan Chase & Co | 211,618 | $1.75M | 0.00% | +23,974+12.8% | Added |
| Trexquant Investment LP | 213,683 | $1.77M | 0.02% | +109,208+104.5% | Added |
| Telemark Asset Management, LLC | 230,000 | $1.90M | 0.25% | −70,000−23.3% | Reduced |
| State of Tennessee, Treasury Department | 249,747 | $2.07M | 0.01% | +241,900+3,082.7% | Added |
| Essex Investment Management Co LLC | 262,814 | $2.17M | 0.45% | −2,006−0.8% | Reduced |
| Russell Investments Group, Ltd. | 270,594 | $2.24M | 0.00% | −86,779−24.3% | Reduced |
| State Street Corp | 274,935 | $2.27M | 0.00% | −12,288−4.3% | Reduced |
| Renaissance Technologies LLC | 278,273 | $2.30M | 0.00% | −102,600−26.9% | Reduced |
| Sphera Management Technology Funds Ltd | 296,755 | $2.45M | 1.96% | +132,610+80.8% | Added |
| Herald Investment Management Ltd | 300,000 | $2.48M | 0.46% | +300,000 | New |
| P.A.W. Capital Corp | 300,000 | $2.48M | 6.14% | −100,000−25.0% | Reduced |
| Ceera Investments, LLC | 319,027 | $2.64M | 0.91% | +59,200+22.8% | Added |
| Morgan Stanley | 340,377 | $2.81M | 0.00% | +21,358+6.7% | Added |
| Marshall Wace, LLP | 359,286 | $2.97M | 0.00% | +550+0.2% | Added |
| Portolan Capital Management, LLC | 370,191 | $3.06M | 0.23% | +87,288+30.9% | Added |
| Victory Capital Management Inc | 493,370 | $4.08M | 0.00% | +63,588+14.8% | Added |
| Citadel Advisors LLC | 500,000 | $4.13M | 0.00% | +242,876+94.5% | Added |
| Nuveen, LLC | 722,971 | $5.98M | 0.00% | +722,971 | New |
| American Century Companies Inc | 727,275 | $6.01M | 0.00% | +727,275 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 806,174 | $6.67M | 0.03% | +128,709+19.0% | Added |
| CenterBook Partners LP | 807,696 | $6.68M | 0.43% | +609,365+307.2% | Added |
| BlackRock, Inc. | 831,068 | $6.87M | 0.00% | +46,125+5.9% | Added |
| Alpha Family Trust | 851,669 | $7.04M | 4.11% | −283,890−25.0% | Reduced |
| Wellington Management Group LLP | 889,363 | $7.36M | 0.00% | +889,363 | New |
| S Squared Technology, LLC | 1,000,491 | $8.27M | 4.23% | −55,800−5.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 1,111,388 | $9.19M | 0.06% | −479,003−30.1% | Reduced |
| Cooper Creek Partners Management LLC | 1,193,895 | $9.87M | 0.32% | +1,193,895 | New |