Week’s roundup of quarterly reports includes American Airlines, the city’s second-biggest carrier, and Union Pacific, the biggest of the major rail operators.

Union Pacific reported a fourth-quarter profit on Thursday that rose 7% on the back of higher grain and fertilizer shipments and core pricing gains, sending the railroad operator's shares up more than 4% before the bell.

The railroad’s fourth-quarter freight volumes were boosted by a surge in intermodal business.