Invest News DetailHurriyet Daily News - The Istanbul Stock Exchange's benchmark interest IMKB-100 ranks sixth among world stock exchange markets in terms of increase in market value. Figures by the World Federation of Exchanges (WFE) show that the market value in IMKB rose 65.09 percent in the first seven months of 2009 when compared to the same period last year. The Shenzhen Stock Exchange ranked first, the Shanghai Stock Exchange came in second and the Brazilian Stock Exchange (BM&FBOVESPA) ranked third. Market value at the Istanbul Stock Exchange has exceeded TRY 300 billion as of last weekend. The market value of companies in IMKB was reported at TRY 182 billion last year. Akbank became the stock exchange’s most valuable company with a TRY 24.4 billion market value. Six out of the top 10 most valuable companies are banks, namely Garanti Bank, Is Bankasi, Yapı Kredi, Halkbank and Finans Bank.