Similarweb Ltd.
DE ˙ DB ˙ IL0011751653
3,67 € ↓ -0,22 (-5,56%)
2026-06-03
AKTIENPREIS
SecurityDE:63X / Similarweb Ltd.
InstitutionOppenheimer & Co Inc
Latest Disclosed Ownership91,088 shares
Latest Disclosed Value $ 237,740
Oppenheimer & Co Inc reports 1.90% increase in ownership of 63X / Similarweb Ltd.

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 91,088 shares of Similarweb Ltd. (DE:63X) valued at $197,661 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 89,390 shares of Similarweb Ltd.. This represents a change in shares of 1.90% during the quarter. The current value of the position is $334,111 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)
2026-04-23 2026-03-31 13F SIMILARWEB SHS M84137104 91,088 1,698 1.90 238 -64.57 0.0029
2026-02-02 2025-12-31 13F SIMILARWEB SHS M84137104 89,390 -10,212 -10.25 670 -27.75 0.0095
2025-11-06 2025-09-30 13F SIMILARWEB SHS M84137104 99,602 -4,787 -4.59 926 13.20 0.0113
2025-07-31 2025-06-30 13F SIMILARWEB SHS M84137104 104,389 -656 -0.62 818 -5.76 0.0108
2025-04-23 2025-03-31 13F SIMILARWEB SHS M84137104 105,045 -6,104 -5.49 869 -44.85 0.0131
2025-02-05 2024-12-31 13F SIMILARWEB SHS M84137104 111,149 4,542 4.26 1,575 67.09 0.0235
2024-11-05 2024-09-30 13F SIMILARWEB SHS M84137104 106,607 9,555 9.85 942 24.93 0.0144
2024-08-08 2024-06-30 13F SIMILARWEB SHS M84137104 97,052 24,412 33.61 754 15.47 0.0120
2024-05-07 2024-03-31 13F SIMILARWEB SHS M84137104 72,640 72,640 654 0.0108
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.