Union Pacific is trading 4.52% lower at $273.52 after hours, with no verified company-specific announcement; broader market weakness following hotter-than-expected September inflation is a plausible, unconfirmed explanation.

  • The move follows the October 14 regular-session close of $286.48.
  • The inflation reading pushed Treasury yields higher and weighed on U.S. stocks; the S&P 500 and Nasdaq were both down more than 0.5%, according to the supplied market context.