Dubai Financial Market, the emirate's main bourse, was forced to delay the start of trading on Sunday due to a technical fault, it said in a statement.
Last month, the Qatar Exchange (QE) was also forced to cease trading due to a technical fault.
"The incident occurred during the trading session and consequentially required the stock exchange to cease trading until the incident could be resolved,” a QE spokesperson said.
“Trading then resumed until noon when the QE teams discovered that the technical issue had not been resolved, requiring a further halt to trading. After consultation with QFMA, it was agreed to cancel all transactions that took place today and any orders that had not been executed.”