S&P Global is trading 4.3% down at $379.04 after closing at $396.07 on October 6; no clear company-specific announcement explains the after-hours move. - The move contrasts with the positive broader-market tone: the S&P 500, Nasdaq Composite, and Dow all advanced during the regular session. - Mizuho’s October 5–6 report cut its price target to $531 from $554 after model updates and retained an Outperform rating; coverage does not establish it as the cause of the after-hours drop.