Samsung Electronics' preliminary fourth-quarter operating profit missed estimates by a large margin, with the South Korean tech giant hit hard by extra costs as it works towards providing high-end chips to Nvidia .

Samsung Electronics Co.’s shares rose after Nvidia Corp. founder Jensen Huang expressed confidence in the Korean company’s ability to resolve technical issues dogging its highest-end memory, offsetting disappointing quarterly results.

Samsung Electronics said today that it’s likely to miss expectations on fourth-quarter profit by a wide margin, as analysts blamed the miss on the poor performance of its high-end memory chips for artificial intelligence accelerators.