CSX Corporation

CSX Corporation is an American freight railroad that operates the largest rail network in the eastern United States, moving everything from chemicals and automobiles to containerized consumer goods and coal across approximately 20,000 route miles in 26 states and two Canadian provinces. With $14.1 billion in revenue in fiscal 2025 and a market capitalization near $93 billion, CSX is one of two dominant freight railroads east of the Mississippi River — an effective duopolist in a business where the barriers to entry are measured in decades, billions of dollars, and acts of Congress.

This is a story about a wide-moat franchise emerging from a difficult year. Revenue contracted 3% in fiscal 2025, operating income fell 14%, and the operating ratio — the industry's defining efficiency metric — deteriorated 400 basis points to 67.9%. Behind those numbers sit a weak freight cycle, a $164 million goodwill impairment in the company's trucking subsidiary, and a one-time surge in capital spending as CSX completed two transformative infrastructure projects. The first half of fiscal 2026 has already shown a sharp reversal: revenue up 6.0%, operating income up 18.7%, and the operating ratio improving to 62.8% — effectively back to the level that made CSX one of the most profitable railroads in North America two years earlier.

The file turns on a single question: whether the infrastructure investments, new leadership team, and tightening truck market can sustain a multi-year margin recovery, or whether FY2025 was not a trough but the beginning of a structurally lower return profile as coal erodes, the Norfolk Southern–Union Pacific merger reshapes the competitive landscape, and the easy post-PSR efficiency gains run out.