SK Hynix stock has surged, with reports indicating a 7% or possibly 8% gain, driven by strong demand for chips, particularly those related to artificial intelligence. The increase has had a broader impact on the market, contributing to a rally in asian stocks and a record high for the KOSPI index. Other semiconductor stocks have also been affected, with some, like Samsung and SK Hynix, rising, while others, such as Micron, have fallen.