SEOUL—Samsung Electronics Co. Ltd. slashed 2018 capex by more than a quarter on Oct. 31 and warned of lower profit until early next year, calling an end to a two-year boom in memory chips that fueled record third-quarter profit.
The downbeat forecast by the world’s biggest maker of memory chips and smartphones adds to investor jitters over waning global demand for mobile and other electronics devices that roiled world stock markets this month.
