Demand for truck trailers is on a tear, given the nation’s aging semi-truck trailer fleet and increasing freight demand. Wabash National, one of the largest makers of truck trailers, and the only publicly held company in the business, could be a prime beneficiary. Its shares, at a recent $11.65, could soar as orders roll in.

A semi-truck trailer is a freight trailer with back wheels, but no front axle. Typically, it is coupled to a truck tractor or the tail of another trailer. Semi-trailer orders are expected to rise 12% this year, to 267,000, and remain around the same level in 2015.

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