The memory chip sector is experiencing a significant transformation driven by AI demand, leading to a historic rise in semiconductor valuations. SK Hynix shares surged 13%, reaching a market cap of over $1 trillion, making it the second South Korean and third Asian company to achieve this milestone. Micron Technology also saw a substantial increase in its stock. Both companies are key suppliers of high-bandwidth memory chips crucial for AI. The KOSPI index has risen significantly, benefiting from this semiconductor rally. SK Hynix is planning a US listing to raise funds for its production facilities.