SK Hynix overtakes Samsung Electronics to become South Korea’s most valuable listed company by market capitalisation, ending Samsung’s long run at the top. Multiple outlets report that the change happens during trading on Monday, when SK Hynix’s market value rises above Samsung’s on the Korea Exchange. Reuters-style figures cited across the reports show SK Hynix’s market capitalisation at about 2,080 trillion won (around US$1.35 trillion), compared with Samsung’s roughly 2,067 trillion won after Samsung’s shares fall slightly. SK Hynix shares close higher, with one report putting the gain at about 5.6%, as investors bid up the memory chipmaker. The milestone marks the first time Samsung relinquishes the top spot on the KOSPI benchmark since it began an uninterrupted reign in 2000, after Samsung had first reached the position in 1999. Several sources link the shift to strong semiconductor demand tied to the artificial intelligence boom, with SK Hynix benefiting from demand for high-bandwidth memory (HBM) used in AI systems. Customers cited include Nvidia and Google, reflecting SK Hynix’s role in the HBM supply chain.