Source: International homepage (paywall)
A handful of mega-cap AI infrastructure plays now dominate portfolio returns. Investors who think they're diversified are actually making a single structural bet on accelerating AI deployment that may never materialize at the promised scale. This concentration mirrors the dot-com bubble's most dangerous moments, except the wealth concentration is tighter. A correction in semiconductor or large language model viability doesn't just hurt tech allocators—it destabilizes the broader market since passive index funds are locked into these winners by capitalization-weighting mechanics.