Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of trucking company Arkansas Best (Nasdaq: ABFS) sank 11% on Monday, after its quarterly results came in well below Wall Street expectations.

So what: Hurt by bad weather and spiking fuel prices, Arkansas Best posted a first-quarter loss of $12.8 million, or $0.51 per share, versus analyst estimates of just a $0.21-per-share loss. Trucking companies such as Arkansas Best, YRC Worldwide (Nasdaq: YRCW), and Werner (Nasdaq: WERN) have all faced significant pricing pressure over the past few quarters, and Mr. Market is taking today's news as a sign that those headwinds won't let up anytime soon.

Now what: Arkansas Best might be worth looking into. The company's bottom line was definitely dismal, but the first quarter is typically the slowest for trucking companies, and management retains its bullish belief that it will return to profitability this year. In that light, Arkansas Best might be poised for a few upside surprises going forward. More importantly, with a rock-solid balance sheet and reasonable forward P/E, the stock's downside seems adequately protected.

Interested in more info on Arkansas Best? Add it to your watchlist.

Fool contributor Brian Pacampara owns no position in any of the companies mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Fool's disclosure policy always gets a perfect score.