The Zimbabwe Stock Exchange (ZSE) has rolled out the ZSE Top 10 index with effect from 01 January 2018. The constituents were selected from all companies listed on the ZSE as at 31 December 2017. Selection was based on overall size of listed company's market capitalisation as at that date as per Indices ground rules. The index is calculated using Market capitalisation method. The review of the constituents will be carried out in March, June, September and December each year.