News Summary

• Nasdaq down nearly 4% over five days to Wednesday, with chip-makers the worst affected.
• Sandisk and Micron were among the biggest US fallers, both down more than 13%.
• But investors can't really complain: their gains this year are 727% and 269%, respectively.
• South Korea’s chip-centric Kospi index, where big falls in SK Hynix and Samsung shares triggered a circuit breaker, bringing trading to a halt before panic set in.