The Kuwait market KSE ended almost flat at 6,642.1 points (up 0.03%). Shares of the northern Gulf state's fifth largest financial institution Commercial Bank of Kuwait (CBK) could not continue their rebound from last week, after Capital Intelligence announced that it has downgraded its ratings for CBK, which ended flat at KD0.850. The bank's financial strength rating was lowered to BBB from BBB+ and its foreign currency long-term and short-term ratings were lowered to BBB+ and A2 from A- and A1, respectively, Jordinvest reports. CBKs outlook was revised from stable to negative. Gulf Petroleum Investment posted the largest price increase, climbing 6.33% higher at KD0.042.