Investing strategies don't get more classic than the so-called 60/40 allocation. By holding 60% of your portfolio in stocks and 40% in bonds, the thinking goes, you get the best of both worlds: high growth potential from your riskier stocks and protection from your more conservative bonds.

For investors who hold this portfolio mix or one similar to it, however, this year has been tough. From the start of 2022 through September 28, a 60/40 portfolio invested in line with benchmark U.S. stock and bond indexes shed 20%. Only two calendar years — both during the Great Depression — have been worse.