Tractor-trailers on a highway

Image source: Getty Images.

What happened

Shares of North America's largest trailer manufacturer, Wabash National Corporation (NYSE:WNC),continued their winning streak in January to gain almost 11% after a strong rally in December. While Wabash didn't make any big announcements last month, expectations of strong 2016 numbers and outlook from the company fueled much of the optimism, amid recovering oil prices and anticipation of stronger business prospects under President Donald Trump's tenure.

So what

In a surprising move mid-December, Wabash reinstated a quarterly dividend after a gap of nearly six years, backed by strong profit and cash flow during the better half of 2016. Management projected record operating profit for 2016, further fueling investors' optimism. The stock had already caught the market's attention since the presidential election on hopes that Trump's infrastructure spending boost could drive the freight markets. Demand for trailers, after all, is closely tied to freight fundamentals.

In fact, the American Trucking Associations projected a stronger freight year ahead when it released industry truck tonnage numbers for December last month. Firmer oil prices further support Wabash's case, as this could revive demand for tank trailers from chemicals and energy markets: Wabash is North America's largest manufacturer of liquid transportation systems. Not surprisingly, investors were encouraged by all of the positive catalysts and continued to bid Wabash shares up in January.

Now what

Wabash reported strong 2016 numbers on Jan. 31, with lower costs driving its net profit 15% higher despite a 9% drop in sales. It further projected its 2017 earnings per share to be between $1.40 and $1.55, which handily beat analysts' estimates.

On the flip side, Wabash's 2017 earnings projections reflect an almost 15% decline from its 2016 EPS at the higher end of the range. Worse yet, Wabash ended the fourth quarter with a backlog value of only about $802 million compared to $1.2 billion in 2015. In short, strong freight markets will largely decide how fast Wabash can grow its earnings in 2017 and beyond.

Neha Chamaria has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.