Who Union Pacific buys from and sells to
Largest US freight railroad, serving the western two-thirds of the country; buying Norfolk Southern.
Buys from 3
- WabtecWABlocomotives and rail equipment
- CaterpillarCATProgress Rail locomotives and rail services
- Diesel fuel supplierslocomotive fuel
Sells to 4
- UPSUPSintermodal containers coast to coast
- Chemical and plastics shipperschemicals and plastics from Gulf Coast plants
- Grain and coal shippersbulk freight from the Plains and Powder River
- Automakersfinished vehicles and parts, including from Mexico
Where the chain could break
- Norfolk Southern merger still under STB review; completion targeted for 1H 2027
- Major Mexico border crossings carry auto and manufacturing traffic exposed to tariffs
Competes with
- BNSF (Berkshire)BRK-Bwestern rail freight
- CPKCCPrail to Mexico
- Trucking companiesshorter haul freight
Mapped by hand from filings and company reporting, as of October 2026. It shows the relationships that matter most, not every contract: most are never disclosed, and agreements change.