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Union Pacific vs CSX: UNP and CSX compared

Union Pacific is the larger company: $7.2B of revenue in its latest quarter (Q3 2026) against $4.0B for CSX (Q3 2026). Union Pacific is growing faster (+15% against +12% a year earlier). Union Pacific is more profitable, with an operating margin of 40.9% against 39.1%.

Union Pacific vs CSX, latest quarterUnion Pacific vs CSX, latest quarterUnion Pacific (UNP)CSX (CSX)Revenue$7.2B$4.0BRevenue growth, Y/Y+15%+12%Operating margin40.9%39.1%Net margin28.8%26.2%Free cash flow$1.8B$1.0B

Where the money goes: UNP and CSX

Union Pacific (UNP) · Q3 2026

Union Pacific, Q3 2026: revenue $7.2B (+15% year over year), operating margin 40.9%, net earnings $2.1B, operating cash flow $2.8B. The chart follows the revenue to costs, profit and cash.

CSX (CSX) · Q3 2026

CSX, Q3 2026: revenue $4.0B (+12% year over year), operating margin 39.1%, net earnings $1.1B, operating cash flow $1.6B. The chart follows the revenue to costs, profit and cash.

Union Pacific revenue by segment, Q3 2026Union Pacific revenue by segment, Q3 2026Freight revenues$6.8BOther revenues$384M
CSX revenue by segment, Q3 2026CSX revenue by segment, Q3 2026Total Merchandise$2.5BCoal$537MMetals and Equipment$267MMinerals$246M
Union Pacific (UNP)CSX (CSX)
Latest quarterQ3 2026Q3 2026
Revenue$7.2B$4.0B
Revenue growth, Y/Y+15%+12%
Operating margin40.9%39.1%
Net earnings$2.1B$1.1B
Net margin28.8%26.2%
Operating cash flow$2.8B$1.6B
Free cash flow$1.8B$1.0B
Market value$177.1B$94.2B
P/E23.2×26.3×
Analysts’ mean target$331.38$53.81

Where the revenue comes from

Union Pacific

CSX

Questions

Which is bigger, Union Pacific or CSX?

Union Pacific is the larger company: $7.2B of revenue in its latest quarter (Q3 2026) against $4.0B for CSX (Q3 2026).

Is Union Pacific or CSX growing faster?

Union Pacific is growing faster (+15% against +12% a year earlier).

Which is more profitable, Union Pacific or CSX?

Union Pacific is more profitable, with an operating margin of 40.9% against 39.1%.

More: Union Pacific earnings · how Union Pacific makes money · CSX earnings · how CSX makes money

From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Oct 22, 2026; 10-Q filed Oct 21, 2026). Fiscal quarters can end on different dates. Not investment advice.