Elon Musk's September 2026 comments at the All-In Summit, where he described deepening Tesla-SpaceX collaboration across AI, robotics, energy, and compute without ruling out a combination, remain the main driver of trader interest in an official merger announcement. SpaceX President Gwynne Shotwell noted integration is accelerating faster than anticipated, while joint efforts like the Terafab chip facility and Tesla's SpaceX stake gains underscore operational overlap. SpaceX's recent spectrum acquisition and post-IPO valuation dynamics could ease an all-stock deal, though analysts emphasize regulatory hurdles, shareholder approvals, and the absence of formal talks or filings. No announcement has occurred as of mid-October 2026, leaving sentiment tied to upcoming earnings updates or Musk statements that could shift implied probabilities.