Union Pacific :
$59.15 (U.S.)
Why buy: A better balance sheet than most, with a low debt-to-EBITDA ratio and more cash per share. The cheapest U.S. railroad based on trailing earnings.
Why not: Posted the lowest free cash flow of the four U.S. railways in the last four quarters.
Omaha-based, it serves the west and Mexico.
CSX : $45.47 (U.S.)
Why buy: One of the most affordable railways, based on forward P/E.
Why not: One of the most leveraged, as measured by debt-to-EBITDA and debt as a percentage of enterprise value.
Jacksonville, Fla.-based CSX serves 23 states east of the Mississippi River and stretches into Ontario.
Norfolk Southern : $49.86 (U.S.)
Why buy: Leads U.S. railroads in profit and operating margins and threw off nearly as much free cash as Burlington Northern – with about half the revenue.
Why not: That's already priced in, giving it a high P/E. Plus, its ROA and ROE trail competitors.
Based in Norfolk, Va., it's the eastern competitor to CSX.
Canadian Pacific (CP):
$48.72 (Cdn)
Why buy: Better margins than Burlington Northern as it
attempts a rebound
Why not: Industry-low ROA and ROE, vulnerability to one large coal-shipping customer.
The Calgary-based company is Canada's second-largest railway company as measured by total track miles.
Canadian National (CNR)
$53.72 (Cdn)
Why buy: The best margins thanks to low expense ratios
Why not: Stock hasn't dropped as much as competitors', so rebound potential is less.
Montreal-based CN's track stretches from the Atlantic to the Pacific to the Gulf of Mexico.
Sources: Capital IQ; analyst reports, interviews
© The Globe and Mail

