SK Hynix is trading at $926.00 after a -4.34% move as concerns about AI-infrastructure investment persisted. - SK Hynix fell alongside Korean semiconductor peers, despite U.S. chip stocks rising the previous night. - It completed its roughly 40 trillion won share buyback on October 21, earlier than planned; the end of large buybacks was also affecting supply and demand. - Renewed AI-spending concerns pressured Asian technology stocks. No trading-volume data was provided.