SK Hynix's Seoul Collapse Dragged Down US Chip Stocks

SK Hynix shares plummeted 15% in Seoul on July 13, their worst single day on record, as investors booked profits after the Nasdaq debut. Schwab Network cited the Korean selloff as a direct factor behind a broader retreat in the Philadelphia Semiconductor Index, showing how a single foreign listing—however massive—can now shift US chip-sector sentiment in real time.