SK Hynix's stock has risen significantly in its US listing, with some reports indicating a 13% or 14% increase. The company's debut on the Nasdaq is reportedly the largest US listing by a foreign company, with the listing size estimated to be around $26.5 billion or $28 billion. The strong performance is attributed to growing demand for memory chips fueled by the AI boom, although some warnings have been raised about potential challenges in 2027.