Hong Kong Exchanges & Clearing, one of the world’s largest exchange operators by market value, will today join a growing list of bourses that offer extended trading hours in key products.

HKEx's introduction of overnight trading in its most popular index futures comes as its national rival, the Shanghai Futures Exchange, mulls a similar move for its spot gold and silver contracts. The initiatives are not consigned to Asia. Exchanges around the globe are reviewing the length of their trading hours to help revive trading and access new customers.