POSCO is a South Korean steel manufacturer headquartered in Pohang, South Korea. It had an output of 42,000,000 metric tons of crude steel in 2015, making it the world's sixth-largest steelmaker by this measure. From Wikipedia
The KOSPI closed at 2,525.56 as tech, battery, and steel sectors surged, with investors anticipating progress in U.S.-South Korea tariff talks and easing U.S.-China tensions.