SMWB Similarweb Ltd.
Similarweb Ltd. (SMWB) Institutional Ownership
What the institutions did with SMWB last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| NASPERS LTD | 11.2M | 27.9% |
| MENORA MIVTACHIM HOLDINGS LTD. | 4.0M | 10.0% |
| WELLINGTON MANAGEMENT GROUP LLP | 3.6M | 9.0% |
| ION Crossover Partners Ltd | 3.0M | 7.6% |
| Ulysses Management LLC | 2.9M | 7.3% |
| S SQUARED TECHNOLOGY, LLC | 1.7M | 4.2% |
| Schonfeld Strategic Advisors LLC | 1.2M | 3.0% |
| Y.D. More Investments Ltd | 1.1M | 2.9% |
| ARK Investment Management LLC | 834.7K | 2.1% |
| RENAISSANCE TECHNOLOGIES LLC | 713.7K | 1.8% |
| CDC Financial, Inc. | 674.2K | 1.7% |
| Alpha Family Trust | 658.9K | 1.6% |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P | 650.0K | 1.6% |
| HERALD INVESTMENT MANAGEMENT Ltd | 645.5K | 1.6% |
| P.A.W. CAPITAL CORP | 640.0K | 1.6% |
| Sphera Management Technology Funds Ltd | 615.0K | 1.5% |
| CenterBook Partners LP | 599.7K | 1.5% |
| Lotus Technology Management, LP | 531.4K | 1.3% |
| JANE STREET GROUP, LLC | 513.3K | 1.3% |
| PEAK6 LLC | 484.8K | 1.2% |
| Connor, Clark & Lunn Investment Management Ltd. | 445.7K | 1.1% |
| UBS Group AG | 403.3K | 1.0% |
| CITADEL ADVISORS LLC | 346.7K | 0.9% |
| MORGAN STANLEY | 268.2K | 0.7% |
| LAVELLE CAPITAL LP | 202.7K | 0.5% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Schonfeld Strategic Advisors LLC | Increased | 289.2K | 1.2M | +921.5K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 825.8K | 18.2K | -807.6K |
| MIRABELLA FINANCIAL SERVICES LLP | Sold Out | 792.7K | 0 | -792.7K |
| CenterBook Partners LP | Reduced | 1.3M | 599.7K | -725.4K |
| Militia Capital Management LLC | Sold Out | 691.3K | 0 | -691.3K |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 3.0M | 3.6M | +657.9K |
| MARSHALL WACE, LLP | Reduced | 638.2K | 61.0K | -577.2K |
| Lotus Technology Management, LP | New | 0 | 531.4K | +531.4K |
| ARK Investment Management LLC | Increased | 352.1K | 834.7K | +482.6K |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 405.6K | 6.8K | -398.9K |
| Qube Research & Technologies Ltd | Reduced | 416.1K | 31.8K | -384.3K |
| Penn Capital Management Company, LLC | Sold Out | 360.4K | 0 | -360.4K |
| MORGAN STANLEY | Reduced | 591.9K | 268.2K | -323.7K |
| JANE STREET GROUP, LLC | Increased | 231.3K | 513.3K | +282.0K |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P | Increased | 390.0K | 650.0K | +260.0K |
| XTX Topco Ltd | Reduced | 228.9K | 10.9K | -218.0K |
| Phoenix Financial Ltd. | Sold Out | 216.9K | 0 | -216.9K |
| UBS Group AG | Increased | 198.5K | 403.3K | +204.8K |
| JPMORGAN CHASE & CO | Sold Out | 175.2K | 0 | -175.2K |
| PEAK6 LLC | Increased | 321.2K | 484.8K | +163.7K |
| Jump Financial, LLC | Sold Out | 147.6K | 0 | -147.6K |
| ANTIPODES PARTNERS Ltd | New | 0 | 145.6K | +145.6K |
| P.A.W. CAPITAL CORP | Increased | 500.0K | 640.0K | +140.0K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | 0 | 138.4K | +138.4K |
| CITADEL ADVISORS LLC | Reduced | 476.0K | 346.7K | -129.3K |
| Palogic Value Management, L.P. | Sold Out | 114.0K | 0 | -114.0K |
| CITIGROUP INC | Reduced | 110.2K | 7.5K | -102.7K |
| D. E. Shaw & Co., Inc. | Increased | 58.6K | 159.9K | +101.4K |
| Point72 Asset Management, L.P. | Sold Out | 100.2K | 0 | -100.2K |
| MYDA Advisors LLC | New | 0 | 100.0K | +100.0K |
| OPPENHEIMER & CO INC | Sold Out | 91.1K | 0 | -91.1K |
| S SQUARED TECHNOLOGY, LLC | Increased | 1.6M | 1.7M | +90.0K |
| Voleon Capital Management LP | Sold Out | 88.7K | 0 | -88.7K |
| State of Wyoming | New | 0 | 88.5K | +88.5K |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | 533.6K | 445.7K | -87.9K |
| Engineers Gate Manager LP | Sold Out | 87.4K | 0 | -87.4K |
| FEDERATED HERMES, INC. | Sold Out | 70.0K | 0 | -70.0K |
| Ulysses Management LLC | Reduced | 3.0M | 2.9M | -70.0K |
| BANK OF AMERICA CORP /DE/ | Sold Out | 64.0K | 0 | -64.0K |
| Tidal Investments LLC | Sold Out | 61.6K | 0 | -61.6K |
| GSA CAPITAL PARTNERS LLP | Reduced | 152.1K | 95.9K | -56.2K |
| AXQ CAPITAL, LP | Sold Out | 52.4K | 0 | -52.4K |
| Russell Investments Group, Ltd. | Sold Out | 52.0K | 0 | -52.0K |
| TWO SIGMA INVESTMENTS, LP | Increased | 79.1K | 129.9K | +50.8K |
| Pathstone Holdings, LLC | Increased | 50.4K | 99.4K | +49.0K |
| WealthTrust Axiom LLC | New | 0 | 44.6K | +44.6K |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | Increased | 125.6K | 169.9K | +44.3K |
| GOLDMAN SACHS GROUP INC | Sold Out | 42.6K | 0 | -42.6K |
| IMC-Chicago, LLC | New | 0 | 37.5K | +37.5K |
| Graham Capital Management, L.P. | Sold Out | 36.6K | 0 | -36.6K |
| CDC Financial, Inc. | Increased | 639.0K | 674.2K | +35.2K |
| STATE STREET CORP | Reduced | 109.4K | 77.1K | -32.3K |
| SIMPLEX TRADING, LLC | Increased | 2.9K | 33.1K | +30.2K |
| Quadrature Capital Ltd | Reduced | 94.2K | 68.2K | -26.0K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 739.7K | 713.7K | -25.9K |
| HRT FINANCIAL LP | Sold Out | 22.7K | 0 | -22.7K |
| SG Americas Securities, LLC | New | 0 | 22.1K | +22.1K |
| Virtu Financial LLC | Sold Out | 20.1K | 0 | -20.1K |
| NEW YORK STATE COMMON RETIREMENT FUND | Sold Out | 18.8K | 0 | -18.8K |
| Aquatic Capital Management LLC | Sold Out | 18.0K | 0 | -18.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.