South Korea's KOSPI tumbled 466.06 points (-6.4%) to 6,818.35 at the close on
July 16; the KOSDAQ fell 4.5%. SK Hynix slid 11% and Samsung Electronics dropped
8%. Japan's Nikkei 225 fell 1,915.97 points (-2.79%) to 66,835.54; Kioxia lost
14%. South Korean authorities said they will announce measures soon to address
volatility amplified by leveraged ETFs tied to Samsung Electronics and SK Hynix.