Chevron is trading 4.52% up at €208.20; no clear new Chevron-specific announcement explaining the move on October 26 was identified. - The latest completed session was October 23. - A report linked that session’s gain to rising oil prices and Middle East supply concerns, with Brent topping $116 amid fears of renewed conflict. - The supplied market context is pre-market, so the quoted move is a live indication, not a confirmed October 26 closing move.