SimilarwebSMWB
13F holders, Q1 2026 (March 31)80holders −18
18new positions
35sold out
6famous investors
$2.75avg. 13F price*
At the end of Q1 2026, 80 institutions reported holding Similarweb Ltd. (SMWB) in their 13F filings, down 18 from Q4 2025. 18 opened new positions and 35 sold out. The largest holders were Naspers Ltd. ($29.2M), Menora Mivtachim Holdings LTD. ($10.5M) and Y.D. More Investments Ltd ($8.3M). 6 famous investors held it, including Cathie Wood (0.0% of ARK Investment Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Similarweb Ltd.
- CUSIP
- M84137104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 18 | $5.7M |
| Exits | 35 | $56.9M |
All 13F filers, Q4 2025 → Q1 2026: 7,958,812 shares bought and 15,683,754 shares sold, net −7,724,942 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 80 holders
| Naspers Ltd. | 11.53% | No change | 11,173,265 | $29.2M |
| Menora Mivtachim Holdings LTD. | 0.05% | No change | 4,015,494 | $10.5M |
| Y.D. More Investments Ltd | 0.33% | Reduce -1.7% | 1,151,298 | $8.3M |
| ION Crossover Partners Ltd | 21.46% | No change | 3,030,826 | $7.9M |
| Ulysses Management LLC | 2.95% | No change | 2,998,474 | $7.8M |
| Wellington Management Group LLP | 0.00% | Reduce -1.2% | 2,966,757 | $7.7M |
| S Squared Technology, LLC | 1.58% | Add +106.4% | 1,600,000 | $4.2M |
| CenterBook Partners LP | 0.19% | Add +37.9% | 1,325,113 | $3.5M |
| Alpha Family Trust | 1.10% | No change | 658,935 | $2.3M |
| Millennium Management | 0.00% | Add +130.8% | 825,763 | $2.2M |
| Mirabella Financial Services LLP | 0.21% | New | 792,664 | $2.1M |
| Renaissance Technologies | 0.00% | Add +104.6% | 739,673 | $1.9M |
| HERALD INVESTMENT MANAGEMENT Ltd | 0.23% | No change | 645,465 | $1.7M |
| CDC Financial, Inc. | 1.39% | Add +350.9% | 639,014 | $1.7M |
| Marshall Wace, LLP | 0.00% | Add +118.2% | 638,188 | $1.7M |
| Sphera Management Technology Funds Ltd | 0.91% | Add +28.1% | 615,000 | $1.6M |
| Morgan Stanley | 0.00% | Add +130.6% | 591,863 | $1.5M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Reduce -33.2% | 533,634 | $1.4M |
| P.A.W. Capital Corp. | 1.04% | Add +108.3% | 500,000 | $1.3M |
| Citadel Advisors | 0.00% | Add +137.9% | 476,005 | $1.2M |
| Qube Research & Technologies Ltd | 0.00% | Add +2409.6% | 416,146 | $1.1M |
| Acadian Asset Management LLC | 0.00% | Add +156.1% | 405,607 | $1.1M |
| Nano Cap New Millennium Growth Fund L P | 0.95% | Add +132.8% | 390,000 | $1.0M |
| Penn Capital Management Company, LLC | 0.07% | Reduce -77.3% | 360,366 | $941K |
| ARK Investment Management | 0.01% | Add +48.9% | 352,070 | $919K |
| PEAK6 LLC | 0.02% | Add +29149.2% | 321,156 | $838K |
| Schonfeld Strategic Advisors LLC | 0.01% | New | 289,174 | $755K |
| Militia Capital Management LLC | 0.14% | — | 236,000 | $616K |
| Jane Street Group, LLC | 0.00% | Add +24.2% | 231,266 | $604K |
| XTX Topco Ltd | 0.01% | New | 228,880 | $597K |
| Phoenix Financial Ltd. | 0.01% | Reduce -94.9% | 216,904 | $566K |
| Lavelle Capital LP | 0.33% | No change | 202,727 | $529K |
| UBS Group AG | 0.00% | Reduce -63.0% | 198,543 | $518K |
| Persistent Asset Partners Ltd | 0.18% | No change | 180,000 | $470K |
| JPMorgan Chase & Co. | 0.00% | Add +765.3% | 175,207 | $435K |
| Gsa Capital Partners LLP | 0.02% | New | 152,105 | $397K |
| Jump Financial, LLC | 0.01% | Add +133.1% | 147,616 | $385K |
| BlackRock, Inc. | 0.00% | Reduce -86.9% | 127,504 | $333K |
| Susquehanna Fundamental Investments, LLC | 0.01% | New | 125,623 | $328K |
| Palogic Value Management, L.P. | 0.13% | New | 114,000 | $298K |
| Citigroup Inc. | 0.00% | Add +8158.9% | 110,174 | $288K |
| State Street Corp. | 0.00% | Reduce -70.4% | 109,396 | $286K |
| Point72 Asset Management | 0.00% | Add +12.4% | 100,204 | $262K |
| Quadrature Capital Ltd | 0.00% | New | 94,234 | $246K |
| Oppenheimer & Co. Inc. | 0.00% | Add +1.9% | 91,088 | $238K |
| Voleon Capital Management LP | 0.01% | New | 88,704 | $232K |
| Engineers Gate Manager LP | 0.00% | Add +39.2% | 87,418 | $228K |
| Two Sigma Investments, LP | 0.00% | New | 79,076 | $206K |
| Federated Hermes, Inc. | 0.00% | Add +133.3% | 70,000 | $183K |
| Bank of America Corp. | 0.00% | Add +475.3% | 63,985 | $167K |
| Tidal Investments LLC | 0.00% | Add +5.7% | 61,626 | $161K |
| Centiva Capital, LP | 0.01% | New | 60,122 | $157K |
| D. E. Shaw & Co. | 0.00% | Add +106.3% | 58,552 | $153K |
| Axq Capital, LP | 0.02% | New | 52,410 | $137K |
| Pathstone Holdings, LLC | 0.00% | Add +63.4% | 50,390 | $132K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -64.9% | 52,019 | $129K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -26.3% | 42,643 | $111K |
| Graham Capital Management, L.P. | 0.00% | New | 36,634 | $96K |
| HRT Financial LP | 0.00% | Reduce -61.1% | 22,670 | $59K |
| Virtu Financial LLC | 0.00% | New | 20,111 | $52K |
| PharVision Advisers, LLC | 0.50% | Reduce -47.0% | 18,927 | $49K |
| New York State Common Retirement Fund | 0.00% | Reduce -97.8% | 18,774 | $49K |
| Aquatic Capital Management LLC | 0.00% | New | 18,008 | $47K |
| Squarepoint Ops LLC | 0.00% | New | 13,020 | $34K |
| Lazard Asset Management LLC | 0.00% | Reduce -18.3% | 11,228 | $29K |
| Barclays PLC | 0.00% | Add +1462.7% | 10,611 | $28K |
| Cresset Asset Management, LLC | 0.00% | New | 10,144 | $26K |
| Meitav Investment House Ltd. | 0.00% | No change | 10,000 | $26K |
| Wells Fargo & Company | 0.00% | Add +925.0% | 8,200 | $21K |
| Simplex Trading, LLC | 0.00% | Reduce -84.7% | 2,904 | $8K |
| SBI Securities Co., Ltd. | 0.00% | Add +0.1% | 1,024 | $3K |
| BNP Paribas Financial Markets | 0.00% | Add +304.6% | 890 | $2K |
| Royal Bank of Canada | 0.00% | Reduce -60.9% | 200 | $1K |
| Osaic Holdings, Inc. | 0.00% | Reduce -21.7% | 300 | $783 |
| Caitong International Asset Management Co., Ltd | 0.00% | Add +1244.4% | 242 | $632 |
| Jones Financial Companies LLLP | 0.00% | No change | 100 | $252 |
| Assetmark, Inc. | 0.00% | New | 48 | $125 |
| Smartleaf Asset Management LLC | 0.00% | Reduce -38.3% | 29 | $72 |
| Northwestern Mutual Wealth Management Co. | 0.00% | New | 12 | $31 |
| FMR LLC | 0.00% | No change | 6 | $16 |
"% of holder's portfolio" is SMWB's weight in each manager's 13F, not the share of Similarweb Ltd. the manager owns.