Similarweb LTD.: which funds bought and sold
Institutions that bought and sold Similarweb shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 35 institutions that filed 13F reports for both quarters added to or opened positions in Similarweb, and 47 cut or closed them. Together they sold a net 2.6M shares, −6.2% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 1.5M shares (−15.5%); index fund managers were net sellers of 26K shares (−11.1%). 16 opened a new position and 27 sold out entirely.
Bought, Q2 2026 35 institutions, 16 of them new holders Sold, Q2 2026 47 institutions, 27 of them sold out
Net change, all compared −2.6M shares (−6.2%)
Net change, active managers −1.5M shares (−15.5%), 7 bought, 16 sold
Buyers versus sellers
35 bought 14 47 sold
Active managers and hedge funds 7 bought · 16 sold · −1.5M
Index fund managers 1 bought · 1 sold · −26K
Other institutions 27 bought · 30 sold · −1.1M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Schonfeld Strategic Advisors LLC Hedge fund | +921K +318.7% | 1.2M | $7.4M |
| Wellington Management Group LLP Active manager | +658K +22.2% | 3.6M | $22.2M |
| Lotus Technology Management, LP | +531K New position | 531K | $3.4M |
| ARK Investment Management LLC Active manager | +483K +137.1% | 835K | $5.1M |
| Jane Street Group, LLC | +282K +121.9% | 513K | $3.1M |
| Nano Cap New Millennium Growth Fund L P | +260K +66.7% | 650K | $4M |
| UBS Group AG | +205K +103.1% | 403K | $2.5M |
| Peak6 LLC | +164K +51.0% | 485K | $3M |
| Antipodes Partners Ltd Hedge fund | +146K New position | 146K | $892,534 |
| P.A.W. Capital Corp | +140K +28.0% | 640K | $3.9M |
| Susquehanna International Group, LLP | +138K New position | 138K | $848,496 |
| D. E. Shaw & Co., Inc. Hedge fund | +101K +173.2% | 160K | $980,402 |
| Myda Advisors LLC | +100K New position | 100K | $613,000 |
| S Squared Technology, LLC | +90K +5.6% | 1.7M | $10.4M |
| State Of Wyoming | +88K New position | 88K | $542,248 |
| Two Sigma Investments, LP Hedge fund | +51K +64.2% | 130K | $795,987 |
| Pathstone Holdings, LLC | +49K +97.2% | 99K | $609,261 |
| Wealthtrust Axiom LLC | +45K New position | 45K | $273,182 |
| Susquehanna Fundamental Investments, LLC | +44K +35.2% | 170K | $1M |
| Imc-Chicago, LLC | +38K New position | 38K | $229,912 |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Schonfeld Strategic Advisors LLC Hedge fund | +921K +318.7% | 1.2M | $7.4M |
| Wellington Management Group LLP Active manager | +658K +22.2% | 3.6M | $22.2M |
| ARK Investment Management LLC Active manager | +483K +137.1% | 835K | $5.1M |
| Antipodes Partners Ltd Hedge fund | +146K New position | 146K | $892,534 |
| D. E. Shaw & Co., Inc. Hedge fund | +101K +173.2% | 160K | $980,402 |
| Two Sigma Investments, LP Hedge fund | +51K +64.2% | 130K | $795,987 |
| Lazard Asset Management LLC Active manager | +12K +109.9% | 24K | $144,460 |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Millennium Management LLC Hedge fund | −808K −97.8% | 18K | $111,554 |
| Mirabella Financial Services LLP | −793K Sold out | 0 | — |
| Centerbook Partners LP Hedge fund | −725K −54.7% | 600K | $3.7M |
| Militia Capital Management LLC | −691K Sold out | 0 | — |
| Marshall Wace, LLP Hedge fund | −577K −90.4% | 61K | $373,814 |
| Acadian Asset Management LLC Active manager | −399K −98.3% | 6,750 | $41,000 |
| Qube Research & Technologies Ltd Hedge fund | −384K −92.3% | 32K | $195,222 |
| Penn Capital Management Company, LLC Active manager | −360K Sold out | 0 | — |
| Morgan Stanley | −324K −54.7% | 268K | $1.6M |
| Xtx Topco Ltd | −218K −95.2% | 11K | $66,854 |
| Phoenix Financial Ltd. | −217K Sold out | 0 | — |
| Jpmorgan Chase & Co | −175K Sold out | 0 | — |
| Jump Financial, LLC | −148K Sold out | 0 | — |
| Citadel Advisors LLC Hedge fund | −129K −27.2% | 347K | $2.1M |
| Palogic Value Management, L.P. | −114K Sold out | 0 | — |
| Citigroup Inc | −103K −93.2% | 7,511 | $46,042 |
| Point72 Asset Management, L.P. Hedge fund | −100K Sold out | 0 | — |
| Oppenheimer & Co Inc | −91K Sold out | 0 | — |
| Voleon Capital Management LP Hedge fund | −89K Sold out | 0 | — |
| Connor, Clark & Lunn Investment Management Ltd. | −88K −16.5% | 446K | $2.7M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Millennium Management LLC Hedge fund | −808K −97.8% | 18K | $111,554 |
| Centerbook Partners LP Hedge fund | −725K −54.7% | 600K | $3.7M |
| Marshall Wace, LLP Hedge fund | −577K −90.4% | 61K | $373,814 |
| Acadian Asset Management LLC Active manager | −399K −98.3% | 6,750 | $41,000 |
| Qube Research & Technologies Ltd Hedge fund | −384K −92.3% | 32K | $195,222 |
| Penn Capital Management Company, LLC Active manager | −360K Sold out | 0 | — |
| Citadel Advisors LLC Hedge fund | −129K −27.2% | 347K | $2.1M |
| Point72 Asset Management, L.P. Hedge fund | −100K Sold out | 0 | — |
| Voleon Capital Management LP Hedge fund | −89K Sold out | 0 | — |
| Engineers Gate Manager LP Hedge fund | −87K Sold out | 0 | — |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Lotus Technology Management, LP | 531K | $3.4M |
| Antipodes Partners LtdHedge fund | 146K | $892,534 |
| Susquehanna International Group, LLP | 138K | $848,496 |
| Myda Advisors LLC | 100K | $613,000 |
| State Of Wyoming | 88K | $542,248 |
| Wealthtrust Axiom LLC | 45K | $273,182 |
| Imc-Chicago, LLC | 38K | $229,912 |
| SG Americas Securities, LLC | 22K | $135,000 |
| Integrated Wealth Concepts LLC | 15K | $91,950 |
| R Squared Ltd | 11K | $68,999 |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Mirabella Financial Services LLP | 793K | $2.1M |
| Militia Capital Management LLC | 691K | $1.8M |
| Penn Capital Management Company, LLCActive manager | 360K | $940,555 |
| Phoenix Financial Ltd. | 217K | $566,119 |
| Jpmorgan Chase & Co | 175K | $434,513 |
| Jump Financial, LLC | 148K | $385,278 |
| Palogic Value Management, L.P. | 114K | $297,540 |
| Point72 Asset Management, L.P.Hedge fund | 100K | $261,532 |
| Oppenheimer & Co Inc | 91K | $237,740 |
| Voleon Capital Management LPHedge fund | 89K | $231,517 |
Who holds the shares
- Institutions reporting
- 69
- Ten largest holders
- 75.8% of 13F-reported shares
- Index fund managers
- 0.5% of 13F-reported shares
- Active managers and hedge funds
- 20.0% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 7 | 16 | 1 | 7 | −1.5M | −15.5% |
| Index fund managers | 1 | 1 | 0 | 0 | −26K | −11.1% |
| Other institutions | 27 | 30 | 15 | 20 | −1.1M | −3.5% |