CSX Corporation

CSX's largest segment, merchandise at 65% of FY2025 revenue, moves under multi-year contracts with repeat industrial shippers, providing reasonable visibility. Export coal revenue, which compressed sharply in FY2024-FY2025 due to lower global energy benchmark pricing, demonstrates that roughly 14% of the revenue base carries meaningfully higher volatility.

The merchandise segment spans chemicals, automotive, agricultural, metals, forest products, and minerals with no single commodity class above roughly 15% of total revenue. The addition of a trucking business (Quality Carriers, acquired 2021) at roughly 6% of FY2025 revenue adds a non-rail transportation stream, while intermodal at 15% and coal at 14% complete a spread across four distinct segments with partially uncorrelated demand drivers.

CSX's approximately 20,000 route-mile network is concentrated in the eastern United States, with minimal Canadian operations and negligible international revenue. Substantially all freight volume depends on US industrial production and trade activity, making the company single-country in practice and exposing it to US-specific policy, regulatory, and economic cycle risk.

Under precision scheduled railroading, CSX achieved a historical Class I low operating ratio of 56.8%, demonstrating genuine operating leverage from its fixed rail infrastructure. The FY2025 operating margin compression to 32.1% from 36.1% in FY2024 on a 3% revenue decline shows the downside of that fixed-cost structure, and maintenance capex of roughly $2.4B annually bounds how capital-light the model can become.

Merchandise freight is transported under multi-year contracts for industrial customers with high switching costs, representing mission-critical, repeat-purchase revenue. Coal at roughly 14% of FY2025 revenue is structurally declining as a domestic utility fuel and is priced against commodity benchmarks, lowering the overall mix quality compared to a pure merchandise carrier.