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, Q3 2025
Institutional positions in Similarweb Ltd. as of Sep 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
- 95
- −16 vs. Q2 2025
- Shares held
- 56.5M
- +4.69M (+9.0%) vs. Q2 2025
- Total value
- $526.1M
- +$111.4M (+26.9%) vs. Q2 2025
- New holders
- 11
- 31 more added
- Sold out
- 27
- 34 more reduced
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Similarweb Ltd.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Naspers Ltd | 11,173,265 | $103.9M | 15.70% | 00.0% | Unchanged |
| Viola Ventures V.C. Management 4 Ltd. | 10,810,778 | $100.5M | 85.84% | 00.0% | Unchanged |
| Menora Mivtachim Holdings Ltd. | 3,208,394 | $29.8M | 0.15% | +881,652+37.9% | Added |
| Migdal Insurance & Financial Holdings Ltd. | 3,106,157 | $28.9M | 0.31% | +100,000+3.3% | Added |
| Ulysses Management LLC | 2,998,474 | $27.9M | 6.49% | 00.0% | Unchanged |
| Phoenix Holdings Ltd. | 2,993,086 | $27.8M | 0.34% | +1,363,901+83.7% | Added |
| Wellington Management Group LLP | 2,457,805 | $22.9M | 0.00% | +1,525,230+163.6% | Added |
| Penn Capital Management Co Inc | 1,646,094 | $15.3M | 1.18% | +1,233,928+299.4% | Added |
| Nuveen, LLC | 1,482,941 | $13.8M | 0.00% | +185,827+14.3% | Added |
| Y.D. More Investments Ltd | 1,182,798 | $11.3M | 0.64% | −51,500−4.2% | Reduced |
| CenterBook Partners LP | 1,180,966 | $11.0M | 0.54% | −260,844−18.1% | Reduced |
| Portolan Capital Management, LLC | 1,179,000 | $11.0M | 0.59% | +451,408+62.0% | Added |
| BlackRock, Inc. | 945,264 | $8.79M | 0.00% | +95,810+11.3% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 944,552 | $8.78M | 0.03% | +23,881+2.6% | Added |
| New York State Common Retirement Fund | 849,745 | $7.90M | 0.01% | +849,745 | New |
| S Squared Technology, LLC | 686,672 | $6.39M | 2.43% | 00.0% | Unchanged |
| Alpha Family Trust | 658,935 | $6.13M | 2.87% | −192,734−22.6% | Reduced |
| Herald Investment Management Ltd | 600,000 | $5.58M | 0.74% | 00.0% | Unchanged |
| First Eagle Investment Management, LLC | 545,001 | $5.07M | 0.01% | +375,496+221.5% | Added |
| Millennium Management LLC | 510,921 | $4.75M | 0.00% | +202,537+65.7% | Added |
| Royce & Associates LP | 494,328 | $4.60M | 0.05% | +494,328 | New |
| Sphera Management Technology Funds Ltd | 462,878 | $4.30M | 2.18% | +60,000+14.9% | Added |
| Scalar Gauge Management, LLC | 441,742 | $4.11M | 2.09% | −674,601−60.4% | Reduced |
| Essex Investment Management Co LLC | 380,793 | $3.54M | 0.54% | +119,866+45.9% | Added |
| Renaissance Technologies LLC | 363,973 | $3.38M | 0.00% | +8,400+2.4% | Added |
| Susquehanna International Group, LLP | 322,321 | $3.00M | 0.00% | +191,527+146.4% | Added |
| Ceera Investments, LLC | 319,027 | $2.97M | 0.93% | 00.0% | Unchanged |
| State Street Corp | 318,059 | $2.96M | 0.00% | +7,518+2.4% | Added |
| UBS Group AG | 312,987 | $2.91M | 0.00% | +273,943+701.6% | Added |
| Morgan Stanley | 299,528 | $2.79M | 0.00% | −613,733−67.2% | Reduced |
| Citadel Advisors LLC | 260,869 | $2.43M | 0.00% | −619,396−70.4% | Reduced |
| P.A.W. Capital Corp | 240,000 | $2.23M | 4.04% | 00.0% | Unchanged |
| Marshall Wace, LLP | 233,214 | $2.17M | 0.00% | +62,272+36.4% | Added |
| ARK Investment Management LLCSuperinvestorARK Invest | 230,053 | $2.14M | 0.01% | −12,317−5.1% | Reduced |
| Acadian Asset Management LLC | 177,548 | $1.64M | 0.00% | +177,548 | New |
| Jane Street Group, LLC | 152,122 | $1.41M | 0.00% | +99,853+191.0% | Added |
| Russell Investments Group, Ltd. | 151,635 | $1.41M | 0.00% | +76,032+100.6% | Added |
| Ameriprise Financial Inc | 142,767 | $1.33M | 0.00% | −711−0.5% | Reduced |
| Trexquant Investment LP | 136,916 | $1.27M | 0.01% | −59,760−30.4% | Reduced |
| Palogic Value Management, L.P. | 117,423 | $1.09M | 0.46% | 00.0% | Unchanged |
| Legato Capital Management LLC | 109,711 | $1.02M | 0.11% | +31,895+41.0% | Added |
| Blair William & Co | 102,623 | $954.4K | 0.00% | −5,460−5.1% | Reduced |
| Oppenheimer & Co Inc | 99,602 | $926.3K | 0.01% | −4,787−4.6% | Reduced |
| Engineers Gate Manager LP | 94,388 | $877.8K | 0.01% | −7,923−7.7% | Reduced |
| Point72 Asset Management, L.P. | 88,757 | $825.4K | 0.00% | −29,443−24.9% | Reduced |
| Swiss National Bank | 87,474 | $813.5K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 85,222 | $792.0K | 0.02% | +19,452+29.6% | Added |
| Northern Trust Corp | 79,249 | $737.0K | 0.00% | −3,677−4.4% | Reduced |
| Verition Fund Management LLC | 67,573 | $628.4K | 0.00% | −19,297−22.2% | Reduced |
| Toroso Investments, LLC | 61,387 | $570.9K | 0.00% | −187−0.3% | Reduced |
| Wolverine Trading, LLC | 56,143 | $539.0K | 0.01% | +56,143 | New |
| Goldman Sachs Group Inc | 57,504 | $534.8K | 0.00% | −41,211−41.7% | Reduced |
| Bank of America Corp | 56,213 | $522.8K | 0.00% | +44,752+390.5% | Added |
| Cubist Systematic Strategies, LLC | 50,413 | $468.8K | 0.01% | −365,177−87.9% | Reduced |
| California State Teachers Retirement System | 49,654 | $461.8K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 47,045 | $437.0K | 0.00% | −11,200−19.2% | Reduced |
| Public Employees Retirement System of Ohio | 46,673 | $434.1K | 0.00% | +35,073+302.4% | Added |
| Jump Financial, LLC | 46,000 | $427.8K | 0.01% | −139,820−75.2% | Reduced |
| PEAK6 LLC | 45,977 | $427.6K | 0.01% | −22,958−33.3% | Reduced |
| Legal & General Group Plc | 43,374 | $403.4K | 0.00% | +5,235+13.7% | Added |
| Group One Trading, L.P. | 41,169 | $382.9K | 0.01% | +38,309+1,339.5% | Added |
| PDT Partners, LLC | 40,794 | $379.4K | 0.02% | −57,594−58.5% | Reduced |
| Vanguard Group Inc | 35,291 | $328.2K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 34,602 | $321.8K | 0.00% | −4,511−11.5% | Reduced |
| Federated Hermes, Inc. | 31,000 | $288.3K | 0.00% | −17,000−35.4% | Reduced |
| Pathstone Holdings, LLC | 30,830 | $286.7K | 0.00% | −2,180−6.6% | Reduced |
| Two Sigma Advisers, LP | 24,800 | $230.6K | 0.00% | −27,100−52.2% | Reduced |
| JPMorgan Chase & Co | 21,525 | $200.2K | 0.00% | −110,693−83.7% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 21,032 | $195.6K | 0.00% | 00.0% | Unchanged |
| Lazard Asset Management LLC | 19,761 | $183.8K | 0.00% | +4,777+31.9% | Added |
| Geode Capital Management, LLC | 16,731 | $155.1K | 0.00% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 16,408 | $152.6K | 0.00% | −3,086−15.8% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 16,124 | $150.0K | 0.00% | +7,251+81.7% | Added |
| State of Tennessee, Treasury Department | 13,617 | $126.6K | 0.00% | +13,617 | New |
| Fullcircle Wealth LLC | 15,000 | $124.5K | 0.04% | +15,000 | New |
| Cresset Asset Management, LLC | 10,468 | $97.4K | 0.00% | −2,211−17.4% | Reduced |
| Meitav Dash Investments Ltd | 10,000 | $93.0K | 0.00% | 00.0% | Unchanged |
| Walleye Trading LLC | 8,928 | $83.0K | 0.00% | +8,222+1,164.6% | Added |
| KLP Kapitalforvaltning AS | 8,100 | $75.3K | 0.00% | 00.0% | Unchanged |
| Wexford Capital LP | 6,860 | $63.8K | 0.02% | +6,860 | New |
| Deutsche Bank AG | 5,667 | $52.7K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 2,686 | $25.0K | 0.00% | +2,686 | New |
| Citigroup Inc | 2,306 | $21.4K | 0.00% | −104−4.3% | Reduced |
| Royal Bank of Canada | 1,612 | $15.0K | 0.00% | +312+24.0% | Added |
| CWM, LLC | 1,139 | $11.0K | 0.00% | +1,139 | New |
| SBI Securities Co., Ltd. | 1,023 | $9.51K | 0.00% | +988+2,822.9% | Added |
| Tower Research Capital LLC (TRC) | 986 | $9.17K | 0.00% | +986 | New |
| Crewe Advisors LLC | 734 | $6.83K | 0.00% | +734 | New |
| Advisor Group Holdings, Inc. | 643 | $6.58K | 0.00% | −570−47.0% | Reduced |
| Wells Fargo & Company | 534 | $4.97K | 0.00% | −14−2.6% | Reduced |
| BNP Paribas Arbitrage, SA | 219 | $2.04K | 0.00% | −43,695−99.5% | Reduced |
| Barclays PLC | 122 | $1.14K | 0.00% | −9,017−98.7% | Reduced |
| GWM Advisors LLC | 109 | $1.01K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 100 | $954 | 0.00% | 00.0% | Unchanged |
| FMR LLC | 6 | $56 | 0.00% | 00.0% | Unchanged |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −117,831−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −111,929−100.0% | Sold out |
| Formula Growth Ltd | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −88,310−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −82,740−100.0% | Sold out |