![]() ![]() What’s the Worst 10 Year Return From a 50/50 Stock/Bond Portfolio? Remember this when people say we’re in a bond bubble. The worst one year return in long-term bonds was a loss of 17% (in the early 1980s). ![]() The worst one year return in the S&P 500 was a loss of nearly 70% (again in the 1930s). A bond market “crash” is not the same thing as a stock market crash.But it’s a risk to assume you’re fully diversified by investing in a single geographic region, stock market capitalization or bond duration. Could you have decent performance in a U.S.-only portfolio of stocks and bonds? Sure. stocks and bonds always makes sense in my mind, but probably more so over the next decade. ![]() investment classes does the same over the next 90 years. A simple diversified portfolio split evenly between stocks and bonds, rebalanced annually has produced pretty amazing returns over the past 90 years or so - close to 8% a year over this time frame.Expect a wide range of results over time and never be surprised when you’re surprised. Investors should never expect to earn “average” returns in any given year or decade.I’ve said this before, but it bears repeating - investors would absolutely flip out if we were to experience a period of negative stock and bonds returns at the same time. Rising interest rates trumped the usual rush to safety in bonds in this instance. The scenario I found most interesting is that long-term bonds were down in the 1973-74 bear market along with stocks. The longest an investor in a 50/50 portfolio would have had to wait in these four scenarios to recoup all of their losses was just over 3 years in the bear market of the early 2000s. The recovery column shows how long it would have taken from the bottom of the bear market to get back to the original breakeven level. The breakeven column shows the number of months it took to make a round trip to get back to the prior peak level. These returns are all calculated using monthly returns, so they don’t give an exact daily peak-to-trough, but it gets you close enough to see the damage that can be inflicted by the markets. Since the majority of the worst performing periods clustered around the Great Depression, I decided to see how this 50/50 portfolio held up in some of the more recent bear markets: Of course, this was at the bottom of a nasty bear market, but it’s not out of the realm of possibilities to expect low stock and bond returns from today’s levels. This led to a 50/50 portfolio return of 1.3% per year (again the majority of which came from the rebalancing bonus). This happened in the late-1960s and early 1970s as a ten year period ending in 1974 saw stocks return just 0.5% per year and bonds eked out a 1.3% annual return. The nightmare scenario we’ve touched on in the past concerns low stock and bond returns concurrently. The -5.7% five year annual portfolio return in the early 1930s came when stocks were down 18% per year with bonds picking up the slack up 3.5% annually. ![]() In the worst three year result, also ending in 1932, stocks showed a -43.7% annual return while bonds were up 4.4% per year. Stocks were down nearly 70% over a 12 month span in 1931-32 while bonds were slightly positive. The stock market was the main culprit for the poor performance. Bonds provided a nice diversification benefit by rising 5.5% annually (overall returns were positive from the rebalancing bonus).Įvery single one of the worst returns for this portfolio took place in the 1930s. This occurred during a ten year period ending in 1939 when the stock market was down 6.1% per year. It’s nice to know that there’s never been a negative ten year return using a 50/50 portfolio, but the worst decade long stretch was barely positive with annual returns of less than 1% per year or a total return of just under 7%. Using Ibbotson data, I went back to 1926 and looked at rolling monthly returns* to calculate various annual 1, 3, 5, and 10 year performance numbers using an annual rebalance for this 50/50 portfolio. A reader recently dug up that post and asked for some further information and a look at different scenarios on the returns of a 50/50 portfolio made up of the S&P 500 and long-term U.S. Last year I wrote about the worst 10 year returns earned on a simple 50/50 portfolio of stocks and bonds. ![]()
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