MarketsBroadcom's stock plunge sends shock wave to Samsung, SK HynixThe share rout in Seoul was led by chipmakers after disappointing artificial intelligence chip revenue guidance from U.S. company Broadcom. (Photo by Yo Inoue)KIM JAEWONJune 5, 2026 14:29 JSTSEOUL -- South Korean stocks fell as much as 6.9% on Friday at one point, as shares of the market's two leading companies -- Samsung Electronics and SK Hynix -- dropped sharply, hit by U.S. chipmaker Broadcom's $285 billion wipeout in market value overnight.