The KOSPI rose 2.66% to 6,894.23 on Sept. 18 as foreign investors returned to net buying despite the Federal Reserve's 0.25-percentage-point rate increase, while the KOSDAQ gained 0.60% to 827.12. Analysts expect pre-Chuseok volatility from Sept. 21 to 23 because of reduced trading, macro uncertainty and the Sept. 24 U.S.-China Summit, but view any correction as a potential entry point ahead of a post-holiday rebound. NH Investment & Securities projects a weekly KOSPI range of 6,400 to 7,500, citing a record-low 12-month forward PER of 5.5 and rising earnings expectations, while warning that looser U.S. semiconductor restrictions on China could pressure Samsung Electronics and SK Hynix.