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, Q2 2025
Institutional positions in Similarweb Ltd. as of Jun 30, 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
- 111
- +1 vs. Q1 2025
- Shares held
- 51.8M
- −3.84M (−6.9%) vs. Q1 2025
- Total value
- $414.8M
- −$45.7M (−9.9%) vs. Q1 2025
- New holders
- 21
- 46 more added
- Sold out
- 20
- 28 more reduced
Compare with Q1 2025: 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, Q2 2025
Shares, value and share of portfolio for each institution holding Similarweb Ltd.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Naspers Ltd | 11,173,265 | $87.6M | 12.30% | 00.0% | Unchanged |
| Viola Ventures V.C. Management 4 Ltd. | 10,810,778 | $84.8M | 37.04% | 00.0% | Unchanged |
| Migdal Insurance & Financial Holdings Ltd. | 3,006,157 | $23.6M | 0.28% | +243,600+8.8% | Added |
| Ulysses Management LLC | 2,998,474 | $23.5M | 5.07% | +249,766+9.1% | Added |
| Phoenix Holdings Ltd. | 1,629,185 | $21.1M | 0.28% | −956,800−37.0% | Reduced |
| Menora Mivtachim Holdings Ltd. | 2,326,742 | $18.2M | 0.10% | +80,272+3.6% | Added |
| CenterBook Partners LP | 1,441,810 | $11.3M | 0.63% | +634,114+78.5% | Added |
| Nuveen, LLC | 1,297,114 | $10.2M | 0.00% | +574,143+79.4% | Added |
| Y.D. More Investments Ltd | 1,234,298 | $9.68M | 0.67% | −165,565−11.8% | Reduced |
| Scalar Gauge Management, LLC | 1,116,343 | $8.75M | 5.00% | −96,856−8.0% | Reduced |
| Wellington Management Group LLP | 932,575 | $7.31M | 0.00% | +43,212+4.9% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 920,671 | $7.22M | 0.03% | +114,497+14.2% | Added |
| Morgan Stanley | 913,261 | $7.16M | 0.00% | +572,884+168.3% | Added |
| Citadel Advisors LLC | 880,265 | $6.90M | 0.01% | +380,265+76.1% | Added |
| Alpha Family Trust | 851,669 | $6.68M | 3.31% | 00.0% | Unchanged |
| BlackRock, Inc. | 849,454 | $6.66M | 0.00% | +18,386+2.2% | Added |
| Portolan Capital Management, LLC | 727,592 | $5.70M | 0.36% | +357,401+96.5% | Added |
| S Squared Technology, LLC | 686,672 | $5.38M | 2.27% | −313,819−31.4% | Reduced |
| Herald Investment Management Ltd | 600,000 | $4.71M | 0.70% | +300,000+100.0% | Added |
| Cubist Systematic Strategies, LLC | 415,590 | $3.26M | 0.04% | +230,088+124.0% | Added |
| Penn Capital Management Co Inc | 412,166 | $3.23M | 0.28% | +412,166 | New |
| Sphera Management Technology Funds Ltd | 402,878 | $3.16M | 1.94% | +106,123+35.8% | Added |
| Renaissance Technologies LLC | 355,573 | $2.79M | 0.00% | +77,300+27.8% | Added |
| Ceera Investments, LLC | 319,027 | $2.50M | 0.77% | 00.0% | Unchanged |
| State Street Corp | 310,541 | $2.43M | 0.00% | +35,606+13.0% | Added |
| Millennium Management LLC | 308,384 | $2.42M | 0.00% | +282,930+1,111.5% | Added |
| Essex Investment Management Co LLC | 260,927 | $2.05M | 0.37% | −1,887−0.7% | Reduced |
| ARK Investment Management LLCSuperinvestorARK Invest | 242,370 | $1.90M | 0.01% | +121,619+100.7% | Added |
| P.A.W. Capital Corp | 240,000 | $1.88M | 3.62% | −60,000−20.0% | Reduced |
| Trexquant Investment LP | 196,676 | $1.54M | 0.02% | −17,007−8.0% | Reduced |
| Jump Financial, LLC | 185,820 | $1.46M | 0.02% | +185,820 | New |
| Marshall Wace, LLP | 170,942 | $1.34M | 0.00% | −188,344−52.4% | Reduced |
| First Eagle Investment Management, LLC | 169,505 | $1.33M | 0.00% | +169,505 | New |
| Ameriprise Financial Inc | 143,478 | $1.12M | 0.00% | −2,387−1.6% | Reduced |
| JPMorgan Chase & Co | 132,218 | $1.04M | 0.00% | −79,400−37.5% | Reduced |
| Susquehanna International Group, LLP | 130,794 | $1.03M | 0.00% | +100,457+331.1% | Added |
| Point72 Asset Management, L.P. | 118,200 | $926.7K | 0.00% | +58,731+98.8% | Added |
| Y-Intercept (Hong Kong) Ltd | 117,831 | $923.8K | 0.02% | +86,612+277.4% | Added |
| Palogic Value Management, L.P. | 117,423 | $920.6K | 0.39% | +13,000+12.4% | Added |
| Qube Research & Technologies Ltd | 111,929 | $877.5K | 0.00% | +111,929 | New |
| Blair William & Co | 108,083 | $847.4K | 0.00% | +20,688+23.7% | Added |
| Oppenheimer & Co Inc | 104,389 | $818.4K | 0.01% | −656−0.6% | Reduced |
| Engineers Gate Manager LP | 102,311 | $802.1K | 0.01% | +80,808+375.8% | Added |
| Formula Growth Ltd | 100,000 | $784.0K | 0.30% | +100,000 | New |
| Goldman Sachs Group Inc | 98,715 | $773.9K | 0.00% | +77,816+372.3% | Added |
| PDT Partners, LLC | 98,388 | $771.4K | 0.04% | +3,717+3.9% | Added |
| UBS Asset Management Americas Inc | 88,310 | $692.4K | 0.00% | +38,218+76.3% | Added |
| Swiss National Bank | 87,474 | $685.8K | 0.00% | +7,800+9.8% | Added |
| Verition Fund Management LLC | 86,870 | $681.1K | 0.00% | +71,402+461.6% | Added |
| Northern Trust Corp | 82,926 | $650.1K | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 82,740 | $649.0K | 0.05% | +82,740 | New |
| Two Sigma Investments, LP | 81,111 | $635.9K | 0.00% | −47,952−37.2% | Reduced |
| Hood River Capital Management LLC | 78,446 | $615.0K | 0.01% | +13,446+20.7% | Added |
| Legato Capital Management LLC | 77,816 | $610.1K | 0.07% | −193−0.2% | Reduced |
| Russell Investments Group, Ltd. | 75,603 | $592.7K | 0.00% | −194,991−72.1% | Reduced |
| PEAK6 LLC | 68,935 | $540.5K | 0.02% | +23,757+52.6% | Added |
| Simplex Trading, LLC | 65,770 | $515.0K | 0.01% | +25,456+63.1% | Added |
| Toroso Investments, LLC | 61,574 | $482.7K | 0.00% | +24,568+66.4% | Added |
| HRT Financial LP | 58,245 | $456.0K | 0.00% | +33,718+137.5% | Added |
| Jane Street Group, LLC | 52,269 | $409.8K | 0.00% | +35,210+206.4% | Added |
| Two Sigma Advisers, LP | 51,900 | $406.9K | 0.00% | +15,400+42.2% | Added |
| California State Teachers Retirement System | 49,654 | $389.3K | 0.00% | +11,356+29.7% | Added |
| Federated Hermes, Inc. | 48,000 | $376.3K | 0.00% | +16,500+52.4% | Added |
| BNP Paribas Arbitrage, SA | 43,914 | $344.3K | 0.00% | −29,897−40.5% | Reduced |
| Petrus Trust Company, LTA | 42,211 | $330.9K | 0.03% | +42,211 | New |
| Voloridge Investment Management, LLC | 41,771 | $327.5K | 0.00% | −120,933−74.3% | Reduced |
| D. E. Shaw & Co., Inc. | 39,113 | $306.6K | 0.00% | +22,963+142.2% | Added |
| UBS Group AG | 39,044 | $306.1K | 0.00% | −26,210−40.2% | Reduced |
| Legal & General Group Plc | 38,139 | $299.0K | 0.00% | 00.0% | Unchanged |
| Jefferies Financial Group Inc. | 36,000 | $282.2K | 0.00% | +36,000 | New |
| Vanguard Group Inc | 35,291 | $276.7K | 0.00% | 00.0% | Unchanged |
| Magnetar Financial LLC | 34,633 | $271.5K | 0.00% | +34,633 | New |
| Pathstone Holdings, LLC | 33,010 | $258.8K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 32,580 | $255.0K | 0.00% | +32,580 | New |
| Cetera Investment Advisers | 30,726 | $240.9K | 0.00% | −9,435−23.5% | Reduced |
| Man Group plc | 26,700 | $209.3K | 0.00% | +26,700 | New |
| Papamarkou Wellner Asset Management inc. | 21,199 | $166.2K | 0.11% | −27,893−56.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 21,032 | $164.9K | 0.00% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 19,494 | $152.8K | 0.00% | +1,132+6.2% | Added |
| Nebula Research & Development LLC | 18,647 | $146.2K | 0.01% | +18,647 | New |
| Antipodes Partners Ltd | 17,510 | $137.3K | 0.00% | +1,344+8.3% | Added |
| Geode Capital Management, LLC | 16,731 | $130.8K | 0.00% | −16,999−50.4% | Reduced |
| Fox Run Management, L.L.C. | 16,497 | $129.3K | 0.02% | +16,497 | New |
| MQS Management LLC | 15,881 | $124.5K | 0.07% | +15,881 | New |
| Lazard Asset Management LLC | 14,984 | $117.0K | 0.00% | −5,108−25.4% | Reduced |
| Schonfeld Strategic Advisors LLC | 14,702 | $115.3K | 0.00% | −1,096,686−98.7% | Reduced |
| Cresset Asset Management, LLC | 12,679 | $99.4K | 0.00% | −22,188−63.6% | Reduced |
| Harbert Fund Advisors, Inc. | 12,323 | $96.6K | 0.29% | +12,323 | New |
| Public Employees Retirement System of Ohio | 11,600 | $90.9K | 0.00% | +1,100+10.5% | Added |
| Eqis Capital Management, Inc. | 11,471 | $89.9K | 0.01% | −80−0.7% | Reduced |
| Bank of America Corp | 11,461 | $89.9K | 0.00% | −128,493−91.8% | Reduced |
| Aquatic Capital Management LLC | 10,615 | $83.2K | 0.00% | +9,905+1,395.1% | Added |
| Meitav Dash Investments Ltd | 10,000 | $78.4K | 0.00% | −9,075−47.6% | Reduced |
| Barclays PLC | 9,139 | $71.6K | 0.00% | +701+8.3% | Added |
| Police & Firemen's Retirement System of New Jersey | 8,873 | $69.6K | 0.00% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 8,100 | $63.5K | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 5,667 | $44.4K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 2,860 | $22.4K | 0.00% | +2,860 | New |
| Quarry LP | 2,674 | $21.0K | 0.00% | +2,674 | New |
| Citigroup Inc | 2,410 | $18.9K | 0.00% | −10−0.4% | Reduced |