S&P 500 posts back-to-back winning days as chips rally and oil prices slide: Live updates

Traders work on the floor of the New York Stock Exchange during morning trading on Oct. 14, 2026 in New York City. Michael M. Santiago | Getty Images The S&P…

SanDisk Plunges 11%, Micron and Western Digital Slide 10% as Korean Market Crash Hits Memory Chips

Quick Read SanDisk (SNDK) plunged 11% while Western Digital (WDC) and Micron (MU) dropped 10% Tuesday morning, reversing off record highs after surging in 2026. The Roundhill Memory ETF (DRAM)…