The traditional 60/40 portfolio, 60% stocks and 40% bonds, has been the default retirement allocation for decades. Charles Schwab’s Modern Wealth Survey 2025 found that 42% of Americans believe that mix is outdated, and the skepticism is sharper among younger investors. 46% of Gen Z and 46% of Millennials agree the model no longer works, ... Bonds Now Make Up Just 8% of the Average Portfolio. What Replaced Them