Tesla's reveal of a robotaxi designed as a low-slung, two-seater, sporty coupe - quite the opposite of a typical taxi with room for several passengers and luggage - flummoxed investors and analysts.

U.S. stock index futures drifted in muted trading Monday as investors hunkered down as the third-quarter earnings season picks up this week, while several Federal Reserve officials are scheduled to provide more cues on monetary policy. 

The U.S. dollar edged higher Monday, holding on to recent gains as traders digested more stimulus announcements from China ahead of comments from a number of Federal Reserve officials.

European stock markets have started the new week in a cautious manner Monday, as investors digested more talk of Chinese fiscal stimulus ahead of a rate-setting meeting by the European Central Bank. 

Most Asian currencies moved little on Monday as traders digested middling cues from China on its plans for fiscal stimulus, while the yuan softened following weaker-than-expected inflation data. 

Gold prices steadied in Asian trade on Monday as traders awaited more cues on U.S. interest rates from a string of Federal Reserve speakers this week, while bets on a November cut persisted.