Shares of Cement Industries of Malaysia Bhd (CIMA) rose 26 per cent, or RM1.30, yesterday, prompting a query from Bursa Malaysia.  
 
The stock closed at RM6.30, a 10-year high, with 4.89 million shares changing hands. 
 
In a reply to the stock exchange’s query, the company said it was not aware of any corporate development, rumour or report or any other possible explanation for the unusual market activity.