
Why is the market down today? Chip rout sinks Nasdaq 2.1%, worst week since June
The Nasdaq fell 2.1% and the S&P 500 1.1% on October 16, 2026 as chip stocks slid, leaving both with their worst week since June; the Dow ended the week up 0.7%.
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The Nasdaq fell 2.1% and the S&P 500 1.1% on October 16, 2026 as chip stocks slid, leaving both with their worst week since June; the Dow ended the week up 0.7%.

On October 15, 2026, Taiwan's TAIEX fell 3.41%, Korea's KOSPI 7.57% and Japan's Nikkei 4.90% as US inflation of 3.7% and AI worries hit chip stocks.

Micron fell about 3.9% on October 12, 2026 after China's CXMT said it will launch a denser 4F² server DRAM this year; the Nasdaq slipped 0.44% while the Dow rose.

South Korea's KOSPI fell 3.65% to 6,384.24 on 12 October 2026 as foreign funds sold Samsung and SK hynix days after Samsung's record quarterly profit.
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