JPMorgan Builds AI Agents That Shift Stocks and Bonds, Topping 60/40 by 0.7pp

Researchers at JPMorgan Chase & Co. have built AI investing agents that dynamically shift allocations between stocks and bonds as market conditions change, beating a traditional 60/40 portfolio by 0.7 percentage points a year in backtests over the past two decades, Bloomberg reported on July 9, 2026. The work, led by Thomas Salopek, a managing director for Cross Asset Strategy, produced a top-performing system that not only outpaced the 60/40 on returns but also showed lower volatility (the magnitude of price swings).