Mustek advanced the most in almost 18 months on Friday after the information technology firm said earnings a share probably rose as much as 50 percent for the half year to December. The stock rose 8.11 percent to close at R6, the biggest daily gain since September 2011. “Basic earnings a share is expected to be between 45 percent and 50 percent higher” than a year earlier, Mustek said. Headline earnings a share were expected to be between 135 percent and 140 percent higher than 13.4c posted in the previous interim period. – Bloomberg