Cboe Europe has informed its participants of changes that will be introduced as part of the MiFIR Review.

Following the adoption of Commission Delegated Regulation 1155/2025/EU, which sets new business clocks synchronisation standards (and repeals Commission Delegated Regulation 574/2017/EU, referred to as RTS 25), effective Monday, 2 March 2026, Cboe plans to introduce nanosecond-level precision throughout its trading systems to increase event timing accuracy and meet new regulatory technical standards.

These changes will be available in the relevant Certification (UAT) environments on Monday, 9 February 2026.