Similarweb Ltd. (NYSE:SMWB) showed up in the 13F filings of 78 institutional investors as of March 2026.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| NASPERS LTD | 31 Mar, 2026 | 11,173,265 | 0 | 0.00% | $29,162,222.00 |
| MENORA MIVTACHIM HOLDINGS LTD. | 31 Mar, 2026 | 4,015,494 | 0 | 0.00% | $10,480,439.00 |
| S SQUARED TECHNOLOGY, LLC | 31 Mar, 2026 | 3,200,000 | 2,424,839 | 312.82% | $8,352,000.00 |
| Ulysses Management LLC | 31 Mar, 2026 | 2,998,474 | 0 | 0.00% | $7,826,017.00 |
| WELLINGTON MANAGEMENT GROUP LLP | 31 Mar, 2026 | 2,966,757 | -34,676 | -1.16% | $7,743,235.00 |
| CenterBook Partners LP | 31 Mar, 2026 | 1,325,113 | 364,117 | 37.89% | $3,458,545.00 |
| Y.D. More Investments Ltd | 31 Mar, 2026 | 1,151,298 | -20,000 | -1.71% | $8,338,601.00 |
| MILLENNIUM MANAGEMENT LLC | 31 Mar, 2026 | 825,763 | 467,956 | 130.78% | $2,155,241.00 |
| MIRABELLA FINANCIAL SERVICES LLP | 31 Mar, 2026 | 792,664 | 792,664 | 0.00% | $2,068,853.00 |
| RENAISSANCE TECHNOLOGIES LLC | 31 Mar, 2026 | 739,673 | 378,200 | 104.63% | $1,930,547.00 |
| Alpha Family Trust | 31 Mar, 2026 | 658,935 | 0 | 0.00% | $2,260,148.00 |
| HERALD INVESTMENT MANAGEMENT Ltd | 31 Mar, 2026 | 645,465 | 0 | 0.00% | $1,678,209.00 |
| CDC Financial, Inc. | 31 Mar, 2026 | 639,014 | 497,291 | 350.89% | $1,667,827.00 |
| MARSHALL WACE, LLP | 31 Mar, 2026 | 638,188 | 345,705 | 118.20% | $1,665,671.00 |
| Sphera Management Technology Funds Ltd | 31 Mar, 2026 | 615,000 | 135,000 | 28.13% | $1,605,150.00 |
| Morgan Stanley | 31 Mar, 2026 | 591,863 | 335,203 | 130.60% | $1,544,762.00 |
| Connor, Clark & Lunn Investment Management Ltd. | 31 Mar, 2026 | 533,634 | -265,588 | -33.23% | $1,392,785.00 |
| P.A.W. CAPITAL CORP | 31 Mar, 2026 | 500,000 | 260,000 | 108.33% | $1,305,000.00 |
| CITADEL ADVISORS LLC | 31 Mar, 2026 | 476,005 | 275,891 | 137.87% | $1,242,373.00 |
| Qube Research & Technologies Ltd | 31 Mar, 2026 | 416,146 | 399,564 | 2,409.63% | $1,086,141.00 |