Similarweb Ltd.
DE ˙ DB ˙ IL0011751653
3,56 € ↓ -0,11 (-2,94%)
2026-06-04
DEL PRIS
SecurityDE:63X / Similarweb Ltd.
InstitutionUlysses Management LLC
Latest Disclosed Ownership2,998,474 shares
Latest Disclosed Value $ 7,826,017
Ulysses Management LLC ownership in 63X / Similarweb Ltd.

On May 15, 2026 - Ulysses Management LLC filed a 13F-HR form disclosing ownership of 2,998,474 shares of Similarweb Ltd. (DE:63X) valued at $6,506,689 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,998,474 shares of Similarweb Ltd.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $10,674,567 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F SIMILARWEB SHS M84137104 2,998,474 0 0.00 7,826 -65.15 0.9756
2026-02-17 2025-12-31 13F SIMILARWEB SHS M84137104 2,998,474 0 0.00 22,459 -19.46 4.1338
2025-11-14 2025-09-30 13F SIMILARWEB SHS M84137104 2,998,474 0 0.00 27,886 18.62 2.0446
2025-08-14 2025-06-30 13F SIMILARWEB SHS M84137104 2,998,474 249,766 9.09 23,508 3.42 2.3665
2025-05-15 2025-03-31 13F SIMILARWEB SHS M84137104 2,748,708 465,480 20.39 22,732 -29.74 3.2719
2025-02-14 2024-12-31 13F SIMILARWEB SHS M84137104 2,283,228 0 0.00 32,353 60.30 5.1810
2024-11-14 2024-09-30 13F SIMILARWEB SHS M84137104 2,283,228 0 0.00 20,184 13.77 1.9124
2024-08-14 2024-06-30 13F SIMILARWEB SHS M84137104 2,283,228 0 0.00 17,741 -13.67 2.4766
2024-05-15 2024-03-31 13F SIMILARWEB SHS M84137104 2,283,228 0 0.00 20,549 68.86 1.7503
2024-02-14 2023-12-31 13F SIMILARWEB SHS M84137104 2,283,228 0 0.00 12,170 -17.75 1.0654
2023-11-14 2023-09-30 13F SIMILARWEB SHS M84137104 2,283,228 0 0.00 14,795 -1.22 1.3646
2023-08-14 2023-06-30 13F SIMILARWEB SHS M84137104 2,283,228 15,961 0.70 14,978 -2.28 1.3724
2023-05-15 2023-03-31 13F SIMILARWEB SHS M84137104 2,267,267 0 0.00 15,327 5.13 3.1646
2023-02-14 2022-12-31 13F SIMILARWEB SHS M84137104 2,267,267 -146,484 -6.07 14,579 3.06 3.5121
2022-11-14 2022-09-30 13F SIMILARWEB SHS M84137104 2,413,751 0 0.00 14,145 -28.97 2.0225
2022-08-15 2022-06-30 13F SIMILARWEB SHS M84137104 2,413,751 367,146 17.94 19,913 -24.87 3.0989
2022-05-16 2022-03-31 13F SIMILARWEB SHS M84137104 2,046,605 568,271 38.44 26,504 0.10 3.1805
2022-02-14 2021-12-31 13F SIMILARWEB SHS M84137104 1,478,334 1,478,334 26,477 2.8952
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.