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 trucker YRC Worldwide (Nasdaq: YRCWD) were up more than 13% in intraday trading today as investors cheered the company's earnings preannouncement.

So what: When a company is teetering on the edge of bankruptcy, any news that pushes it in the "no bankruptcy" direction is great news for investors. In today's announcement, management put both tonnage and revenue per shipment above second-quarter levels. More importantly, the company said that combined EBITDA for the second and third quarters would be between $82 million and $86 million, which is more than enough to avoid tripping covenants on its credit agreements.

Now what: It's been a wild ride for YRC shareholders, and until the company is back on firm footing I don't see that changing. Investors looking for more stability within the trucking industry can look toward currently profitable companies like J.B. Hunt (Nasdaq: JBHT) or UPS (NYSE: UPS), which was an 11 O'Clock Stock pick here at The Motley Fool last month. Those who want to stick with YRC better be ready for more volatility as the market waits for the company's full earnings report on Nov. 5.

Interested in more info on YRC Worldwide? Add it to your watchlist  by clicking here.

United Parcel Service is a Motley Fool Income Investor recommendation. The Fool owns shares of United Parcel Service. Try any of our Foolish newsletter services free for 30 days. True to its name, The Motley Fool is made up of a motley assortment of writers and analysts, each with a unique perspective; sometimes we agree, sometimes we disagree, but we all believe in the power of learning from each other through our Foolish community.

Fool contributor Matt Koppenheffer does not own shares of any of the companies mentioned. You can check out what Matt is keeping an eye on by visiting his CAPS portfolio, or you can follow Matt on Twitter @KoppTheFool or on his RSS feed. The Fool's disclosure policy assures you no Wookiees were harmed in the making of this article.