Kospi Crashes 10.8% as China's Chip Breakthrough Rattles Semiconductors — Oil Suffers Biggest Drop Since April

South Korea's Kospi crashed 10.8% overnight, halting trading, as a report on China building deep ultraviolet lithography machines sent Samsung and SK Hynix into freefall. Oil posted its biggest one-day drop since April, Bitcoin slipped under $64,000, and the Federal Reserve decides tomorrow. Here's what's driving the global risk-off move.