Argan is trading at $354.78, up 4.03%, with shares possibly benefiting from broader engineering-and-construction optimism; this is not a confirmed direct catalyst. - No major company-specific announcement explaining the October 28 move surfaced in available coverage. - A constructive Citi sector preview and demand tied to data-center and power-infrastructure projects drew attention ahead of industry earnings; broader U.S. indexes were little changed in the supplied market context.