• From 6 November, trading of four most active equity index futures contracts to be extended by more than an hour to end at 1 am the following day 
• Second and third phases of enhancements scheduled for next year 

Hong Kong Exchanges and Clearing Limited (HKEX) will introduce the first phase of its after-hours trading (AHT) enhancements on Monday, 6 November 2017, when AHT of Hang Seng Index (HSI), Hang Seng China Enterprises Index (HHI), Mini-HSI and Mini-HHI futures will be extended to 5:15 pm to 1 am the following day (the revised T+1 session) from the current T+1 Session of 5:15 pm to 11:45 pm.

HKEX announced the changes, which are being rolled out in phases, in August of this year.

The second and third phases of the enhancements are scheduled for the first and second halves of next year respectively (please see Roadmap below for details).

3-phase Implementation Roadmap

• Phase 1: Extension to 1:00 am from 11:45 pm of the T+1 Session for HSI, HHI, Mini-HSI and Mini-HHI futures (6 November 2017).
   
• Phase 2: Inclusion of equity index option contracts and a trading halt mechanism for equity index options in the T+1 Session (first half of 2018).
   
• Phase 3: Extension to 3:00 am¹  from 1:00 am of the T+1 Session and alignment of the T+1 Session Cutoff Time (the deadline for system input of post-trade after the T+1 Session) with the close of trading hours (fourth quarter of 2018).

Additional information is available in the HKEX news release headlined "HKEX Plans to Implement Proposed After-Hours Trading Enhancements" and issued on 11 August 2017.

¹    Extension of equity index options trading to 3:00 am is subject to market demand and product liquidity.

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