Schlumberger is trading 7.1% down at $45.60 in after-hours trading on October 19 amid oil and energy-sector weakness. - Regular-session close: $49.09. Reporting noted shares slipping ahead of the October 23 earnings report as oil eased after a Russia-sanctions waiver. - Citi and Piper Sandler trimmed price targets, without explicitly linking changes to the move; no verified company-specific explanation was found. - The broad market closed higher; available evidence points more toward energy-sector pressure than a market-wide sell-off.