The Retirement Machine: AI, high earners, and the risk to global stock markets

US defined contribution plans and IRAs took in about $980 billion of gross contributions in 2024, with roughly $480 billion estimated to flow into US equities, and higher earners account for an estimated $200–300 billion of that annual equity demand. Because AI exposure is concentrated among higher-earning white-collar workers, a rise in AI-linked unemployment could weaken this steady structural bid for stocks, with a 10% hit removing $20–30 billion of annual buying and a 50% hit removing $100–150 billion. The article argues the risk is global, since DC systems are growing across advanced economies and the same finance, technology and professional services industries drive contributions elsewhere.