Bill Dudley Warns That US Stocks Are in Bubble Territory

Bill Dudley warns that US equities are in bubble territory based on stretched valuation measures such as the Shiller CAPE, real equity risk premium, and the Buffett Indicator. He expects the AI investment boom to turn into a boom-bust cycle, pressuring AI hyperscalers and their suppliers. He also flags long-term Treasury yields and US fiscal sustainability as a potential trigger for broader market stress. - Dudley says US equity valuations are stretched: Shiller CAPE near 41, real equity risk premium at 1.1%, and market cap to GDP around 240%. - He sees AI CapEx growth likely decelerating by 2027, which should compress supplier earnings and margins. - He argues AI hyperscalers may not generate the roughly $2 trillion of revenue needed to justify their investment. - He warns the AI boom will likely end in overcapacity, pricing pressure, and a painful shakeout from 7 or 8 providers to 2 or 3 long-term winners. - He notes financing for AI is becoming more opaque as suppliers, private equity, and private credit play larger roles. - He flags rising long-term Treasury yields and US fiscal deficits as a key risk, with Treasury buybacks only tactical. - He adds that IPO lockups expiring will increase floating equity supply and pressure the market.