SimilarwebSMWB
13F holders, Q3 2025 (September 30)94holders −16
11new positions
26sold out
6famous investors
$9.31avg. 13F price*
At the end of Q3 2025, 94 institutions reported holding Similarweb Ltd. (SMWB) in their 13F filings, down 16 from Q2 2025. 11 opened new positions and 26 sold out. The largest holders were Naspers Ltd. ($103.9M), Menora Mivtachim Holdings LTD. ($29.8M) and Migdal Insurance & Financial Holdings Ltd. ($28.9M). 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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 11 | $15.0M |
| Exits | 26 | $8.1M |
All 13F filers, Q2 2025 → Q3 2025: 9,154,133 shares bought and 4,445,085 shares sold, net +4,709,048 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 94 holders
| Naspers Ltd. | 15.70% | No change | 11,173,265 | $103.9M |
| Menora Mivtachim Holdings LTD. | 0.15% | Add +37.9% | 3,208,394 | $29.8M |
| Migdal Insurance & Financial Holdings Ltd. | 0.31% | Add +3.3% | 3,106,157 | $28.9M |
| Ulysses Management LLC | 6.49% | No change | 2,998,474 | $27.9M |
| Phoenix Financial Ltd. | 0.34% | Add +83.7% | 2,993,086 | $27.8M |
| Wellington Management Group LLP | 0.00% | Add +163.6% | 2,457,805 | $22.9M |
| Penn Capital Management Company, LLC | 1.18% | Add +299.4% | 1,646,094 | $15.3M |
| Nuveen, LLC | 0.00% | Add +14.3% | 1,482,941 | $13.8M |
| Y.D. More Investments Ltd | 0.64% | Reduce -4.2% | 1,182,798 | $11.3M |
| CenterBook Partners LP | 0.54% | Reduce -18.1% | 1,180,966 | $11.0M |
| Portolan Capital Management, LLC | 0.59% | Add +62.0% | 1,179,000 | $11.0M |
| BlackRock, Inc. | 0.00% | Add +11.3% | 945,264 | $8.8M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.03% | Add +2.6% | 944,552 | $8.8M |
| New York State Common Retirement Fund | 0.01% | New | 849,745 | $7.9M |
| S Squared Technology, LLC | 2.43% | No change | 686,672 | $6.4M |
| Alpha Family Trust | 2.87% | Reduce -22.6% | 658,935 | $6.1M |
| HERALD INVESTMENT MANAGEMENT Ltd | 0.74% | No change | 600,000 | $5.6M |
| First Eagle Investment Management, LLC | 0.01% | Add +221.5% | 545,001 | $5.1M |
| Millennium Management | 0.00% | Add +65.7% | 510,921 | $4.8M |
| Royce & Associates LP | 0.05% | New | 494,328 | $4.6M |
| Sphera Management Technology Funds Ltd | 2.18% | Add +14.9% | 462,878 | $4.3M |
| Scalar Gauge Management, LLC | 2.09% | Reduce -60.4% | 441,742 | $4.1M |
| Essex Investment Management Co. LLC | 0.54% | Add +45.9% | 380,793 | $3.5M |
| Renaissance Technologies | 0.00% | Add +2.4% | 363,973 | $3.4M |
| Susquehanna International Group, LLP | 0.00% | Add +146.4% | 322,321 | $3.0M |
| Ceera Investments, LLC | 0.93% | No change | 319,027 | $3.0M |
| State Street Corp. | 0.00% | Add +2.4% | 318,059 | $3.0M |
| UBS Group AG | 0.00% | Add +701.6% | 312,987 | $2.9M |
| Morgan Stanley | 0.00% | Reduce -67.2% | 299,528 | $2.8M |
| Citadel Advisors | 0.00% | Reduce -70.4% | 260,869 | $2.4M |
| P.A.W. Capital Corp. | 4.04% | No change | 240,000 | $2.2M |
| Marshall Wace, LLP | 0.00% | Add +36.4% | 233,214 | $2.2M |
| ARK Investment Management | 0.01% | Reduce -5.1% | 230,053 | $2.1M |
| Acadian Asset Management LLC | 0.00% | New | 177,548 | $1.6M |
| Jane Street Group, LLC | 0.00% | Add +191.0% | 152,122 | $1.4M |
| Russell Investments Group, Ltd. | 0.00% | Add +100.6% | 151,635 | $1.4M |
| Ameriprise Financial Inc. | 0.00% | Reduce -0.5% | 142,767 | $1.3M |
| Trexquant Investment LP | 0.01% | Reduce -30.4% | 136,916 | $1.3M |
| Palogic Value Management, L.P. | 0.47% | No change | 117,423 | $1.1M |
| Legato Capital Management LLC | 0.11% | Add +41.0% | 109,711 | $1.0M |
| Blair William & Co. | 0.00% | Reduce -5.0% | 102,623 | $954K |
| Oppenheimer & Co. Inc. | 0.01% | Reduce -4.6% | 99,602 | $926K |
| Engineers Gate Manager LP | 0.01% | Reduce -7.7% | 94,388 | $878K |
| Point72 Asset Management | 0.00% | Reduce -24.9% | 88,757 | $825K |
| Swiss National Bank | 0.00% | No change | 87,474 | $814K |
| Simplex Trading, LLC | 0.02% | Add +29.6% | 85,222 | $792K |
| Northern Trust Corp. | 0.00% | Reduce -4.4% | 79,249 | $737K |
| Verition Fund Management LLC | 0.00% | Reduce -22.2% | 67,573 | $628K |
| Tidal Investments LLC | 0.00% | Reduce -0.3% | 61,387 | $571K |
| Wolverine Trading, LLC | 0.01% | New | 56,143 | $539K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -41.8% | 57,504 | $535K |
| Bank of America Corp. | 0.00% | Add +390.5% | 56,213 | $523K |
| Cubist Systematic Strategies, LLC | 0.01% | Reduce -87.9% | 50,413 | $469K |
| California State Teachers Retirement System | 0.00% | No change | 49,654 | $462K |
| HRT Financial LP | 0.00% | Reduce -19.2% | 47,045 | $437K |
| Public Employees Retirement System of Ohio | 0.00% | Add +302.4% | 46,673 | $434K |
| Jump Financial, LLC | 0.01% | Reduce -75.2% | 46,000 | $428K |
| PEAK6 LLC | 0.01% | Reduce -33.3% | 45,977 | $428K |
| Legal & General Group Plc | 0.00% | Add +13.7% | 43,374 | $403K |
| Group One Trading LLC | 0.01% | Add +1339.5% | 41,169 | $383K |
| PDT Partners, LLC | 0.02% | Reduce -58.5% | 40,794 | $379K |
| Vanguard Group Inc. | 0.00% | No change | 35,291 | $328K |
| D. E. Shaw & Co. | 0.00% | Reduce -11.5% | 34,602 | $322K |
| Federated Hermes, Inc. | 0.00% | Reduce -35.4% | 31,000 | $288K |
| Pathstone Holdings, LLC | 0.00% | Reduce -6.6% | 30,830 | $287K |
| Two Sigma Advisers, LP | 0.00% | Reduce -52.2% | 24,800 | $231K |
| JPMorgan Chase & Co. | 0.00% | Reduce -83.7% | 21,525 | $200K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 21,032 | $196K |
| Lazard Asset Management LLC | 0.00% | Add +31.9% | 19,761 | $184K |
| Geode Capital Management, LLC | 0.00% | No change | 16,731 | $155K |
| Teacher Retirement System of Texas | 0.00% | Reduce -15.8% | 16,408 | $153K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +81.7% | 16,124 | $150K |
| State of Tennessee, Department of Treasury | 0.00% | New | 13,617 | $127K |
| Fullcircle Wealth LLC | 0.04% | New | 15,000 | $125K |
| Cresset Asset Management, LLC | 0.00% | Reduce -17.4% | 10,468 | $97K |
| Meitav Investment House Ltd. | 0.00% | No change | 10,000 | $93K |
| Walleye Trading LLC | 0.00% | Add +1164.6% | 8,928 | $83K |
| KLP Kapitalforvaltning As | 0.00% | No change | 8,100 | $75K |
| Wexford Capital LP | 0.02% | New | 6,860 | $64K |
| Deutsche Bank AG | 0.00% | No change | 5,667 | $53K |
| Larson Financial Group LLC | 0.00% | New | 2,686 | $25K |
| Citigroup Inc. | 0.00% | Reduce -4.3% | 2,306 | $21K |
| Royal Bank of Canada | 0.00% | Add +24.0% | 1,612 | $15K |
| Cwm, LLC | 0.00% | New | 1,139 | $11K |
| SBI Securities Co., Ltd. | 0.00% | Add +2822.9% | 1,023 | $10K |
| Tower Research Capital LLC (TRC) | 0.00% | New | 986 | $9K |
| Crewe Advisors LLC | 0.00% | New | 734 | $7K |
| Osaic Holdings, Inc. | 0.00% | Reduce -47.0% | 643 | $7K |
| Wells Fargo & Company | 0.00% | Reduce -2.5% | 534 | $5K |
| BNP Paribas Financial Markets | 0.00% | Reduce -99.5% | 219 | $2K |
| Barclays PLC | 0.00% | Reduce -98.7% | 122 | $1K |
| NewEdge Advisors, LLC | 0.00% | No change | 109 | $1K |
| Jones Financial Companies LLLP | 0.00% | No change | 100 | $954 |
| FMR LLC | 0.00% | No change | 6 | $56 |
"% of holder's portfolio" is SMWB's weight in each manager's 13F, not the share of Similarweb Ltd. the manager owns.