Grantham puts 90% odds on a SpaceX stock crash amid AI hype

Legendary investor Jeremy Grantham warns SpaceX stock could crash with roughly a 90% probability, citing an extreme valuation, SpaceX’s ambitious but questioned space plans (asteroid mining, Mars colony) deemed “utterly inconceivable” by physicists, and doubts about AI-driven productivity gains. He notes SpaceX’s post-IPO performance and lofty total addressable market projections in its S-1 while highlighting his longstanding permabear stance on bubbles—suggesting the push around SpaceX’s valuation may not be sustainable.