Shares of Union Pacific Corp. slumped 3.2% in premarket trading Tuesday, after the railroad operator warned of a full-year margin miss, citing increased pressure from fuel prices and other cost inflation. The company said 2022 margins will below the previous forecast of mid-60%, and expects full-year inflation to be around 4%. Chief Financial Officer Jennifer Hamann said full fiscal 2022 operating ratio is still expected to improve from 2021, but rising cost pressures also make achieving the company’s target for a full-year operating ratio starting with a “55” percentage unlikely. The stock has declined 10.6% year to date through Monday, while the Dow Jones Transportation Average has lost 11.7% and the Dow Jones Industrial Average has shed 9.4%.

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