What: Shares of railcar manufacturer Trinity Industries Inc (NYSE:TRN) were down 21.6% at 10:55 a.m. ET on Friday after its quarterly results and outlook disappointed Wall Street.

So what: Trinity's Q4 EPS of $1.30 managed to beat estimates, but a wide miss on the top line -- revenue of $1.55 billion vs. the consensus of $1.61 billion -- coupled with downbeat full-year guidance is forcing analysts to drastically lower their growth expectations. In fact, Trinity now expects barge revenue to decline a whopping 32% in 2016 with operating margins of 10%, giving investors little reason to bet on any near-term turnaround catalysts. 

Now what: Management now sees full-year EPS of $2.00 to $2.40, well below the average analyst estimate of $3.65. "Our outlook for 2016 reflects the weakening in the industrial economy that began broadly impacting our businesses late last summer," said Chairman and CEO Timothy Wallace. "In this environment, we are placing a high priority on cost containment and various initiatives to enhance our performance. We will continue to reposition and streamline our manufacturing operations as business conditions fluctuate." More important, with the stock now off a whopping 55% from its 52-week highs and trading at a single-digit forward P/E, today's near-term concerns might be providing patient Fools with a solid long-term opportunity.