Altimeter’s Brad Gerstner says AI demand makes this boom different from dot-com

Every big tech rally eventually gets compared to the dot-com bubble. Brad Gerstner would like to retire that comparison. The founder and CEO of Altimeter Capital argues that the AI boom is a different animal. His core reason is simple: demand for intelligence, in his view, is unlimited. Earnings, not just enthusiasm Gerstner’s case starts with a distinction between two ways stocks go up. Prices can rise because companies earn more, or because investors agree to pay more for the same earnings. The second kind is called multiple expansion. It is the market equivalent of paying more for the same house because the neighborhood feels exciting. Speaking on the All-In Podcast on September 17, 2026, Gerstner argued that today’s rally belongs to the first category. He said the expansion is being powered by rapid earnings growth rather than investors simply stretching valuations. His headline example was Nvidia. Gerstner noted that the chipmaker trades at a forward multiple of just 14 times next year’s projected GAAP earnings. The broader market tells a similar story in his framing. Market earnings rose 26% year-to-date in 2026, driven primarily by AI infrastructure spending. That growth arr...