XLI is trading at $162.36, down 4.47% in after-hours trading, with the immediate trigger unconfirmed. - September manufacturing prices paid jumped to 77.9, signaling stronger input-cost inflation for industrial businesses. - Higher steel, aluminum, and petroleum-related costs, alongside Middle East tensions, add pressure to the sector’s cost outlook. - The reported after-hours drop contrasts with a higher regular-session XLI quote and a modestly positive broader market.