Duration—What an Interest Rate Hike

Could Do to Your Bond Portfolio

(FINRA Investor Alert)


If you own bonds or have money in a bond fund, there is a number you should know. It is called duration. Although stated in years, duration is not simply a measure of time. Instead, duration signals how much the price of your bond investment is likely to fluctuate when there is an up or down movement in interest rates. The higher the duration number, the more sensitive your bond investment will be to changes in interest rates.


Currently, interest rates are hovering near historic lows. Many economists believe that interest rates are not likely to get much lower and will eventually rise. If that is true, then outstanding bonds, particularly those with a low interest rate and high duration may experience significant price drops as interest rates rise along the way. If you have money in a bond fund that holds primarily long-term bonds, expect the value of that fund to decline, perhaps significantly, when interest rates rise.


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