Samsung has announced that its 40% decline in operating profits in Q4 2018 is due to a weak market demand for memory chips. Samsung posted an operating profit of 10.8 trillion won which is 38.5% lower than the 15.1 trillion won it posted in the previous quarter. This is the lowest operating profit that Samsung has posted since Q1 2017. Samsung shares closed down 24% last year and fell another 1.68% Tuesday.