They carry laptops and toys, cars and coal, but they're not Santa's elves, and they weren't very jolly this holiday season.

Shares of some top railroads companies were mixed at the close of trading:

Shares of some top railroads companies are mixed at noon:

Shares of some top railroads companies are mixed at 10 a.m.:

While the commodities bust isn't over yet, the long-term outlook is still bullish. So investors might want to cut back now but look for opportunities in the coming months