Implementation of ECMS SCoRE Corporate Action Standard 4 rounding rules for investment funds

Clearstream¹ informs clients of an upcoming reintroduction of the Standard 4, effective

24 November 2025

to ensure compliance with the SCoRE (Standards for Corporate Actions Reporting and Events) framework.

SCoRE Standard 4 defines harmonised rounding rules for cash proceeds resulting from corporate actions. It is part of the broader SCoRE Corporate Action Standards under the Eurosystem Collateral Management System (ECMS) initiative.

As previously announced in Announcement C23038 and D23053, starting with the November release, the rounding method for gross cash proceeds from corporate actions will be updated. Going forward, amounts will always be rounded down to the number of decimal places allowed by the payment currency (for example, two decimal places for EUR), replacing the previous commercial rounding approach.

This applies to amount fields :19B: and :19B::CHAR// under Cash Movement Details, reflected in Notifications, IPAR and Confirmation messages (MT564/MT566/SEEV.031/SEEV.035/SEEV.036/SEEV.037).

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1. Clearstream refers collectively to Clearstream Banking S.A., registered office at 42, avenue John F. Kennedy, L-1855 Luxembourg, and registered with the Luxembourg Trade and Companies Register under number B-9248, and Clearstream Europe AG, registered office at Mergenthalerallee 61, 65760 Eschborn, Germany and registered in Register B of the Amtsgericht Frankfurt am Main, Germany under number HRB 7500. Clearstream Banking S.A. is registered as an Australian CS (Overseas) Facility, under subsection 824B(2) of the Corporations Act 2001, with registration number ARBN 675 244 783.