Monolithic Power Systems is trading 4.95% lower at $1198.72, with AI infrastructure concerns after election results a likely explanation for sector pressure. - Reuters reported concerns about tighter AI infrastructure scrutiny and a possible slowdown in data-center expansion, pressuring chipmakers and data-center companies. - Shares fell 5.06% in the regular session on November 4, 2026, closing at $1261.08; the S&P 500 and Dow rose while the Nasdaq fell. - No company-specific explanation or after-hours volume information was provided.