Latest Period
Q4 2025
Security Snapshot
SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS (SMWB) Institutional Ownership
CUSIP: M84137104
13F Institutional Holders and Ownership History from Q2 2021 to Q1 2026
Institutions Reporting
97
Shares (Excl. Options)
46,568,146
Price
$7.49
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- Type / Class
- Equity / Ordinary shares, par value 0.01 NIS
- Symbol
- SMWB on NYSE
- Shares outstanding
- 86,901,701
- Price per share
- $2.61
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 46,568,146
- Total reported value
- $348,409,955
- % of total 13F portfolios
- 0%
- Share change
- +656,317
- Value change
- +$1,795,087
- Number of holders
- 97
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- SMWB - SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS is tracked under CUSIP M84137104.
- 97 institutions reported positions in Q4 2025.
- 2 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 97 to 3 between Q4 2025 and Q1 2026.
- Reported value moved from $348,409,955 to $1,545,413.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 97 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP M84137104?
CUSIP M84137104 identifies SMWB - SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP M84137104:
Significant Owners of SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS (SMWB) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Viola Growth Management Fund 2 Ltd. | 13% | $82,486,236 | 10,810,778 | Harel Beit-On | 31 Dec 2024 | |||
| Phoenix Financial Ltd. | 2.9% | -43% | $13,264,676 | -$8,853,942 | 2,502,769 | -40% | Phoenix Financial Ltd. | 18 Feb 2026 |
As of 31 Dec 2025, 97 institutional investors reported holding 46,568,146 shares of SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS (SMWB). This represents 54% of the company’s total 86,901,701 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS (SMWB) together control 49% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| NASPERS LTD | 13% | 11,173,265 | 0% | 18% | $83,687,755 |
| Phoenix Financial Ltd. | 4.9% | 4,285,786 | +43% | 0.35% | $32,100,537 |
| MENORA MIVTACHIM HOLDINGS LTD. | 4.6% | 4,015,494 | +25% | 0.14% | $30,076,050 |
| Migdal Insurance & Financial Holdings Ltd. | 3.6% | 3,106,157 | 0% | 0.2% | $23,265,000 |
| WELLINGTON MANAGEMENT GROUP LLP | 3.5% | 3,001,433 | +22% | 0% | $22,480,733 |
| Ulysses Management LLC | 3.5% | 2,998,474 | 0% | 5.9% | $22,458,570 |
| Penn Capital Management Company, LLC | 1.8% | 1,588,680 | -3.5% | 0.95% | $11,909,417 |
| Nuveen, LLC | 1.7% | 1,520,398 | +2.5% | 0% | $11,387,781 |
| Y.D. More Investments Ltd | 1.3% | 1,171,298 | -0.97% | 0.4% | $8,371,560 |
| BlackRock, Inc. | 1.1% | 976,514 | +3.3% | 0% | $7,314,091 |
| CenterBook Partners LP | 1.1% | 960,996 | -19% | 0.35% | $7,197,860 |
| NEW YORK STATE COMMON RETIREMENT FUND | 0.98% | 852,915 | +0.37% | 0.01% | $6,388,333 |
| Connor, Clark & Lunn Investment Management Ltd. | 0.92% | 799,222 | -15% | 0.02% | $5,986,173 |
| S Squared Technology, LLC | 0.89% | 775,161 | +13% | 2.2% | $5,805,956 |
| Alpha Family Trust | 0.76% | 658,935 | 0% | 2.2% | $4,935,424 |
| First Eagle Investment Management, LLC | 0.74% | 645,647 | +18% | 0.01% | $4,835,896 |
| HERALD INVESTMENT MANAGEMENT Ltd | 0.74% | 645,465 | +7.6% | 0.63% | $4,853,897 |
| ROYCE & ASSOCIATES LP | 0.62% | 537,406 | +8.7% | 0.04% | $4,025,171 |
| UBS Group AG | 0.62% | 536,549 | +71% | 0% | $4,018,752 |
| Portolan Capital Management, LLC | 0.57% | 492,861 | -58% | 0.2% | $3,691,529 |
| Sphera Management Technology Funds Ltd | 0.55% | 480,000 | +3.7% | 1.9% | $3,595,200 |
| STATE STREET CORP | 0.43% | 370,001 | +16% | 0% | $2,771,307 |
| RENAISSANCE TECHNOLOGIES LLC | 0.42% | 361,473 | -0.69% | 0% | $2,707,433 |
| MILLENNIUM MANAGEMENT LLC | 0.41% | 357,807 | -30% | 0% | $2,679,974 |
| MARSHALL WACE, LLP | 0.34% | 292,483 | +25% | 0% | $2,190,698 |
Institutional Holders of SIMILARWEB LTD. - Ordinary shares, par value 0.01 NIS (SMWB) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 592,112 | $1,545,413 | +$415,762 | $2.61 | 3 |
| 2025 Q4 | 46,568,146 | $348,409,955 | +$1,795,087 | $7.49 | 97 |
| 2025 Q3 | 45,724,161 | $425,584,367 | +$32,862,772 | $9.30 | 94 |
| 2025 Q2 | 39,421,999 | $309,072,075 | -$25,108,591 | $7.84 | 109 |
| 2025 Q1 | 44,869,261 | $371,050,037 | +$11,060,980 | $8.27 | 109 |
| 2024 Q4 | 41,334,757 | $585,694,097 | +$81,455,239 | $14.17 | 112 |
| 2024 Q3 | 35,350,723 | $312,488,678 | +$44,808,638 | $8.84 | 93 |
| 2024 Q2 | 30,383,807 | $236,058,514 | +$2,468,377 | $7.77 | 76 |
| 2024 Q1 | 30,002,420 | $269,664,457 | +$24,271,694 | $9.00 | 73 |
| 2023 Q4 | 27,327,571 | $148,483,812 | -$2,713,075 | $5.33 | 54 |
| 2023 Q3 | 33,175,176 | $214,079,411 | +$32,261,423 | $6.48 | 51 |
| 2023 Q2 | 28,061,800 | $184,076,669 | -$3,184,390 | $6.56 | 46 |
| 2023 Q1 | 28,524,216 | $192,826,355 | +$1,605,090 | $6.76 | 41 |
| 2022 Q4 | 28,985,254 | $184,506,669 | +$2,355,742 | $6.43 | 45 |
| 2022 Q3 | 27,260,764 | $160,023,552 | -$1,398,711 | $5.86 | 43 |
| 2022 Q2 | 27,377,253 | $225,856,900 | -$12,112,701 | $8.25 | 45 |
| 2022 Q1 | 28,312,445 | $366,690,000 | +$3,417,483 | $12.95 | 42 |
| 2021 Q4 | 27,949,255 | $500,553,000 | +$30,410,579 | $17.91 | 44 |
| 2021 Q3 | 14,519,959 | $303,896,319 | -$6,442,609 | $20.93 | 34 |
| 2021 Q2 | 14,926,736 | $294,056,000 | +$294,056,003 | $19.70 | 45 |