CITADEL’S KEN GRIFFIN: WE’RE ALMOST CERTAINLY IN AN AI BUBBLE Billionaire Ken Griffin warns investors are “almost certainly” in an AI bubble, as companies struggle to turn massive AI spending into measurable productivity gains. With Anthropic reportedly eyeing $750 billion in future computing expenditures, questions over AI investment returns are intensifying. But Griffin remains bullish on AI’s long-term potential.(彭博社)