Plato Investment: AI stock plunge stems from market confusing technological prospects with investment returns

Plato Investment Management's David Allen said Thursday's selloff in US tech stocks stemmed from investors conflating AI's transformative potential with whether the spending will actually pay off, as the Nasdaq 100 plunged on speculation that congressional Democrats will tighten regulation of the AI industry. Allen attributed the immediate trigger to the midterm election results and described an existential race underway among large hyperscalers. Antipodes Partners portfolio manager Vihari Ross said the selloff reflects markets reassessing the real-world conditions for the next phase of AI investment rather than structural problems at AI companies, citing the massive debt needed to fund buildouts, the resulting sensitivity to borrowing costs and interest rates, the availability of sufficient power supply, and whether demand holds at current levels. She cautioned against assuming every company will deliver perfect outcomes. Investors should watch rates, electricity supply and demand durability as the debate shifts from AI's promise to its financing and returns.