Samsung Electronics announced an expected operating profit of 89.4 trillion won for the April-June quarter, nearly 19 times the prior year's figure and exceeding the combined total of the previous three years. Revenue reached 171 trillion won, up 129 percent year on year, though slightly below analyst forecasts, while shares closed nearly 7 percent lower. DRAM and NAND selling prices rose 44 percent and 53 percent quarter on quarter according to Citi Research.