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 |
|---|---|---|---|---|---|
| Naspers Ltd | 11,173,265 | $92.4M | 8.92% | 00.0% | Unchanged |
| Viola Ventures V.C. Management 4 Ltd. | 10,810,778 | $89.4M | 44.98% | 00.0% | Unchanged |
| Migdal Insurance & Financial Holdings Ltd. | 2,762,557 | $22.8M | 0.32% | +1,050,000+61.3% | Added |
| Ulysses Management LLC | 2,748,708 | $22.7M | 5.75% | +465,480+20.4% | Added |
| Phoenix Holdings Ltd. | 2,585,985 | $21.4M | 0.33% | +63,978+2.5% | Added |
| Menora Mivtachim Holdings Ltd. | 2,246,470 | $18.6M | 0.12% | +560,000+33.2% | Added |
| Jennison Associates LLC | 1,892,110 | $15.6M | 0.01% | +53,055+2.9% | Added |
| T. Rowe Price Investment Management, Inc. | 1,410,826 | $11.7M | 0.01% | +736,004+109.1% | Added |
| Y.D. More Investments Ltd | 1,399,863 | $11.6M | 1.01% | −49,771−3.4% | Reduced |
| Scalar Gauge Management, LLC | 1,213,199 | $10.0M | 6.14% | +97,421+8.7% | Added |
| Cooper Creek Partners Management LLC | 1,193,895 | $9.87M | 0.32% | +1,193,895 | New |
| Schonfeld Strategic Advisors LLC | 1,111,388 | $9.19M | 0.06% | −479,003−30.1% | Reduced |
| S Squared Technology, LLC | 1,000,491 | $8.27M | 4.23% | −55,800−5.3% | Reduced |
| Wellington Management Group LLP | 889,363 | $7.36M | 0.00% | +889,363 | New |
| Alpha Family Trust | 851,669 | $7.04M | 4.11% | −283,890−25.0% | Reduced |
| BlackRock, Inc. | 831,068 | $6.87M | 0.00% | +46,125+5.9% | Added |
| CenterBook Partners LP | 807,696 | $6.68M | 0.43% | +609,365+307.2% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 806,174 | $6.67M | 0.03% | +128,709+19.0% | Added |
| American Century Companies Inc | 727,275 | $6.01M | 0.00% | +727,275 | New |
| Nuveen, LLC | 722,971 | $5.98M | 0.00% | +722,971 | New |
| Citadel Advisors LLC | 500,000 | $4.13M | 0.00% | +242,876+94.5% | Added |
| Victory Capital Management Inc | 493,370 | $4.08M | 0.00% | +63,588+14.8% | Added |
| Portolan Capital Management, LLC | 370,191 | $3.06M | 0.23% | +87,288+30.9% | Added |
| Marshall Wace, LLP | 359,286 | $2.97M | 0.00% | +550+0.2% | Added |
| Morgan Stanley | 340,377 | $2.81M | 0.00% | +21,358+6.7% | Added |
| Ceera Investments, LLC | 319,027 | $2.64M | 0.91% | +59,200+22.8% | Added |
| P.A.W. Capital Corp | 300,000 | $2.48M | 6.14% | −100,000−25.0% | Reduced |
| Herald Investment Management Ltd | 300,000 | $2.48M | 0.46% | +300,000 | New |
| Sphera Management Technology Funds Ltd | 296,755 | $2.45M | 1.96% | +132,610+80.8% | Added |
| Renaissance Technologies LLC | 278,273 | $2.30M | 0.00% | −102,600−26.9% | Reduced |
| State Street Corp | 274,935 | $2.27M | 0.00% | −12,288−4.3% | Reduced |
| Russell Investments Group, Ltd. | 270,594 | $2.24M | 0.00% | −86,779−24.3% | Reduced |
| Essex Investment Management Co LLC | 262,814 | $2.17M | 0.45% | −2,006−0.8% | Reduced |
| State of Tennessee, Treasury Department | 249,747 | $2.07M | 0.01% | +241,900+3,082.7% | Added |
| Telemark Asset Management, LLC | 230,000 | $1.90M | 0.25% | −70,000−23.3% | Reduced |
| Trexquant Investment LP | 213,683 | $1.77M | 0.02% | +109,208+104.5% | Added |
| JPMorgan Chase & Co | 211,618 | $1.75M | 0.00% | +23,974+12.8% | Added |
| Cubist Systematic Strategies, LLC | 185,502 | $1.53M | 0.02% | +82,536+80.2% | Added |
| Acadian Asset Management LLC | 185,065 | $1.53M | 0.00% | −703,577−79.2% | Reduced |
| Voloridge Investment Management, LLC | 162,704 | $1.35M | 0.00% | +162,704 | New |
| Ameriprise Financial Inc | 145,865 | $1.21M | 0.00% | +145,865 | New |
| Bank of America Corp | 139,954 | $1.16M | 0.00% | −136,981−49.5% | Reduced |
| Two Sigma Investments, LP | 129,063 | $1.07M | 0.00% | −126,309−49.5% | Reduced |
| ARK Investment Management LLCSuperinvestorARK Invest | 120,751 | $998.6K | 0.01% | −82,923−40.7% | Reduced |
| Oppenheimer & Co Inc | 105,045 | $868.7K | 0.01% | −6,104−5.5% | Reduced |
| Palogic Value Management, L.P. | 104,423 | $863.6K | 0.38% | +104,423 | New |
| PDT Partners, LLC | 94,671 | $782.9K | 0.06% | +56,991+151.3% | Added |
| Blair William & Co | 87,395 | $722.8K | 0.00% | −10,458−10.7% | Reduced |
| Calamos Advisors LLC | 84,173 | $696.1K | 0.00% | −86,994−50.8% | Reduced |
| Northern Trust Corp | 82,926 | $685.8K | 0.00% | +16,649+25.1% | Added |
| Lombard Odier Asset Management (USA) Corp | 80,000 | $661.6K | 0.22% | +80,000 | New |
| Swiss National Bank | 79,674 | $658.9K | 0.00% | −1,300−1.6% | Reduced |
| Legato Capital Management LLC | 78,009 | $645.1K | 0.09% | −1,198−1.5% | Reduced |
| BNP Paribas Arbitrage, SA | 73,811 | $610.4K | 0.00% | −14,690−16.6% | Reduced |
| UBS Group AG | 65,254 | $539.7K | 0.00% | −149,642−69.6% | Reduced |
| Hood River Capital Management LLC | 65,000 | $537.5K | 0.01% | +65,000 | New |
| Bailard, Inc. | 61,256 | $506.6K | 0.01% | +15,799+34.8% | Added |
| Point72 Asset Management, L.P. | 59,469 | $491.8K | 0.00% | −35,011−37.1% | Reduced |
| UBS Asset Management Americas Inc | 50,092 | $414.3K | 0.00% | +34,180+214.8% | Added |
| Papamarkou Wellner Asset Management inc. | 49,092 | $406.0K | 0.28% | +49,092 | New |
| Quantbot Technologies LP | 46,600 | $385.4K | 0.01% | +16,948+57.2% | Added |
| PEAK6 LLC | 45,178 | $373.6K | 0.01% | +45,178 | New |
| Simplex Trading, LLC | 40,314 | $333.0K | 0.01% | +40,314 | New |
| Cetera Investment Advisers | 40,161 | $332.1K | 0.00% | +40,161 | New |
| California State Teachers Retirement System | 38,298 | $316.7K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 38,139 | $315.4K | 0.00% | −1,232−3.1% | Reduced |
| Toroso Investments, LLC | 37,006 | $306.0K | 0.00% | −3,635−8.9% | Reduced |
| Two Sigma Advisers, LP | 36,500 | $301.9K | 0.00% | −7,100−16.3% | Reduced |
| Vanguard Group Inc | 35,291 | $291.9K | 0.00% | 00.0% | Unchanged |
| Cresset Asset Management, LLC | 34,867 | $288.4K | 0.00% | −11,461−24.7% | Reduced |
| Geode Capital Management, LLC | 33,730 | $278.9K | 0.00% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 33,010 | $273.0K | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 31,500 | $260.5K | 0.00% | +31,500 | New |
| Y-Intercept (Hong Kong) Ltd | 31,219 | $258.2K | 0.02% | +31,219 | New |
| Susquehanna International Group, LLP | 30,337 | $250.9K | 0.00% | +30,337 | New |
| Millennium Management LLC | 25,454 | $210.5K | 0.00% | −82,874−76.5% | Reduced |
| HRT Financial LP | 24,527 | $202.0K | 0.00% | −6,490−20.9% | Reduced |
| Engineers Gate Manager LP | 21,503 | $177.8K | 0.00% | +21,503 | New |
| Quadrature Capital Ltd | 21,264 | $175.9K | 0.00% | −6,736−24.1% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 21,032 | $173.9K | 0.00% | +2,825+15.5% | Added |
| Goldman Sachs Group Inc | 20,899 | $172.8K | 0.00% | −56,227−72.9% | Reduced |
| LPL Financial LLC | 20,591 | $170.3K | 0.00% | +20,591 | New |
| Lazard Asset Management LLC | 20,092 | $166.0K | 0.00% | −56,323−73.7% | Reduced |
| Meitav Dash Investments Ltd | 19,075 | $157.8K | 0.00% | +6,229+48.5% | Added |
| Teacher Retirement System of Texas | 18,362 | $151.9K | 0.00% | +7,566+70.1% | Added |
| B. Riley Asset Management, LLC | 17,675 | $146.2K | 0.39% | +17,675 | New |
| Jane Street Group, LLC | 17,059 | $141.1K | 0.00% | +17,059 | New |
| Antipodes Partners Ltd | 16,166 | $133.7K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 16,150 | $133.6K | 0.00% | −276,434−94.5% | Reduced |
| Verition Fund Management LLC | 15,468 | $127.9K | 0.00% | −7,776−33.5% | Reduced |
| Fullcircle Wealth LLC | 14,140 | $106.2K | 0.04% | +14,140 | New |
| Eqis Capital Management, Inc. | 11,551 | $95.5K | 0.01% | −1,961−14.5% | Reduced |
| Keybank National Association | 11,330 | $93.7K | 0.00% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 10,500 | $86.8K | 0.00% | +600+6.1% | Added |
| Police & Firemen's Retirement System of New Jersey | 8,873 | $73.4K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 8,438 | $69.8K | 0.00% | −2,508−22.9% | Reduced |
| KLP Kapitalforvaltning AS | 8,100 | $67.0K | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 5,667 | $46.9K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 2,420 | $20.0K | 0.00% | +44+1.9% | Added |
| Covestor Ltd | 2,203 | $18.0K | 0.01% | −77−3.4% | Reduced |