Kuwait\'s stock exchange said it had suspended trading in the shares of 19 more companies on Sunday after they failed to report earnings on time. The companies - several involved in real estate - join 12 other firms which were suspended earlier this year. The new companies on the list included investment group Al-Ahlia Holding and International Financial Advisors . The list, which now totals 31 companies, already included Investment Dar, which brought half of luxury British carmaker Aston Martin for £479m ($751.7mn) in 2007 and International Investment Group, which defaulted on a $200mn Islamic bond in April 2010. Global Investment House, whose largest shareholders are the governments of Kuwait and Dubai, was also on the list, according to a statement on the Kuwait stock exchange website. Kuwait\'s markets watchdog warned several companies last month that they would be delisted.