Nasdaq Leads Stocks Lower as 10-Year Treasury Yield Tops 5%, Highest Since 2007

Duration Risk

Duration risk is the sensitivity of a bond's price, or more broadly any asset valued on future cash flows, to changes in interest rates. The basic mechanic: when rates rise, the present value of a bond's future coupon and principal payments falls, because those future dollars are now being discounted at a higher rate, so the bond's price drops. The longer the time until an asset pays out its cash flows, the more its price moves for a given change in rates. A 3-month Treasury bill barely budges when yields move; a 30-year Treasury bond can swing several percentage points in price on the same move, because a bigger share of its value comes from payments decades away, each of which gets discounted more heavily. Today's action illustrates the point directly: the 10-year Treasury yield jumped about 13 basis points to 5.10%, its highest since 2007, and the 30-year moved even more. Bond investors holding long-duration paper took real, mark-to-market losses today, while investors in short-term bills barely noticed. Duration isn't just a bond concept, though. It applies to stocks too: a company's stock price is the present value of all its expected future profits, and a "long-duration" stock, one where most of the expected profit sits far in the future, such as an unprofitable growth company or a high-multiple tech name, is far more sensitive to discount-rate changes than a "short-duration" stock like a mature, cash-generating value company whose profits are mostly near-term. That equity-duration lens explains why the Nasdaq fell harder than the Dow today: the Nasdaq is loaded with high-multiple growth and tech names whose valuations lean heavily on profits expected years out, making them functionally "long duration" and unusually sensitive to a rising-yield environment, while the Dow's more mature, dividend-paying industrials behave more like short-duration assets.