Monolithic Power Systems is trading 4.93% down now at $1172.52 after a broad semiconductor sell-off tied to concerns that leading AI companies may slow advanced-model development.
- Reuters reported AI-related warnings pressured Nasdaq futures and semiconductor shares.
- CNBC said Micron, Intel, and Nvidia fell sharply on September 14, 2026.
- The move appears sector-led: SOXX fell 5.54% during regular trading, alongside declines in the Nasdaq Composite and S&P 500; no clear company-specific catalyst was identified.