Groupon is trading 6.7% up in pre-market at $18.95, with no company-specific news identified to explain the move. - The shares closed at $17.76 on October 14. - Search results described prior-session weakness amid hotter-than-expected inflation and broader risk-off trading. - That market context was mixed to negative and does not clearly explain the October 15 pre-market gain; no specific catalyst was identified.