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