Woofun AI reports that South Korean semiconductor stocks posted significant early gains on the 22nd, driven by overnight strength in US tech equities. As of 8:11 Beijing time, Samsung Electronics climbed 5.79% to 274,000 Korean won. SK Hynix advanced 8.50%, briefly reaching 2 million Korean won, a level not seen since July 15.

In US markets, Nvidia rose 1.97% after its Vera Rubin AI server platform entered mass production and began shipping. Micron Technology surged 12.17% and Broadcom rose 2.21%, lifting the Philadelphia Semiconductor Index by 5.21%. SK Hynix ADRs closed up 13.75% at $171.94. Fund flow data shows foreign investors net purchased 717.6 billion Korean won in the electrical and electronics sector, while retail and institutional investors recorded net sales of 370.6 billion and 345.8 billion won, respectively.