Action Required - Release note 1.6.3 affecting EEX Group DataSource File Cloud

Dear Customer,

Please be informed that the EEX Group DataSource Release 1.6.3 is scheduled for production on Saturday, 05 September 2026.

A short service interruption may occur in the morning, likely between 9 a.m. and 12 p.m. CEST. During this period, temporary limitations when accessing the EEX Group DataSource File Cloud may be experienced.

What are the changes?

EEX Group DataSource File Cloud:

• Renaming the field “InstrumenISIN” to “InstrumentISIN” to ensure consistent field naming and improve data usability. Historical files will be rerun on the release day to rename this field.
• EGSI Day Index – Trade Date Display Update:
  • The displayed Trade Date (field TrdDate) for the EGSI Day Index will be updated to reflect the actual index calculation date and align with the EGSI Day Index methodology.
  • Previously, the Trade Date was displayed according to a different technical logic. This affected only the displayed Trade Date, the index calculation and resulting index values have been unaffected.
  • This change will be visible for the first time on 11 September 2026 in the EEX Group DataSource File Cloud.
  • Historical data will not be adjusted.
  • The index calculation methodology and the resulting index values remain unchanged.

The table below illustrates an example how the displayed Trade Date will change EGSI Day Index Trade Date values:

All clients will be affected equally.

Should you require any further information, please do not hesitate to contact us.

CONTACT
Market Data Services
P +49 341 2156-288
datasource@eex-group.com