Vertiv is trading 4.15% down at $227.45 as markets react to hotter-than-expected September inflation. - Headline CPI rose 3.7% year over year, above the 3.6% forecast; core CPI reached 2.6%, lifting rate-hike concerns and Treasury yields. - The Nasdaq fell 0.91% and the S&P 500 0.65%, adding pressure to growth-oriented shares. - No clear company-specific catalyst for Vertiv’s decline surfaced in available coverage.