Will CSX Stock’s Jump After Earnings Last?
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Shares of CSX (CSX) rose 6.8% on October 22, 2026, the day after the company released its fiscal Q3 2026 report, while the S&P 500 fell 1.2%. The railroad posted $4.02 billion in revenue, coming in barely above the $4.0 billion consensus estimate. That figure marked a 12% increase from a year earlier, and management raised its full-year sales outlook. Fuel surcharges drove a portion of this increase. So how much of that growth came from hauling more freight?
Half Of CSX’s Growth Came From Freight And Prices
Management said fuel accounted for about half of the revenue growth in fiscal Q3 2026, as average diesel prices ran nearly 50% higher than a year earlier. The other half came from the railroad’s own operations: CSX moved 5% more freight, and the CFO cited pricing gains in its merchandise, intermodal and coal markets.
The intermodal business illustrates both factors simultaneously. Volume in the segment climbed 7% to an all-time record, yet management said essentially all of the rise in revenue per unit came from fuel surcharges.
Management still raised its outlook and now expects full-year revenue growth in the high single digits, up from its previous forecast of the mid to high single digit range. This projection covers total revenue, including fuel. In fiscal Q3 2026, about half of that growth came from diesel prices, which CSX does not set.
CSX’s Operating Margin Has Widened Each Quarter In 2026
The margin offers a firmer picture. CSX posted an operating margin of 36.0% in fiscal Q1 2026 and 38.3% in fiscal Q2. The metric reached 39.1% in fiscal Q3, compared with 34.9% a year earlier excluding a $164 million goodwill charge.
Management said the railroad handled the extra volume while reducing nonfuel costs by 3%. Not every expense declined: higher incentive pay and inflation added over $90 million to labor costs, which were mostly offset by better workforce productivity and the absence of last year’s severance costs. CSX controls these operational elements, which is why the margin forms the firmer half of the case for the stock.
What CSX Management Expects For Fiscal Q4 2026
During the October 21 call, management attributed only about half of the growth to fuel. When asked how much extra revenue the surcharges newly added on tariff traffic generated during fiscal Q3 2026, management said it would not provide a precise number. The stock’s rise outpaced other railroads on October 22, with Union Pacific up 3.6% and Norfolk Southern up 3.1%. Following the jump, CSX traded at 26.7 times its trailing earnings at that day’s close, against 23.0 for the S&P 500.
CSX’s margin widened as the company cut nonfuel costs, but about half of its revenue growth came from diesel. For the 6.8% jump to last, more of that growth has to come from freight rather than fuel. CSX is expected to report its fiscal Q4 2026 results in January 2027, and its volume growth from a year earlier is the figure to watch.
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