Bankruptcy Watch: Which of these 3 Stocks Will Head to Zero?

Just 14 months ago, the U.S. economic outlook appeared fairly dire, leading stocks to plunge in late July and early August 2011. As it turns out, it was a false alarm: The S&P 500 has risen 29% since then. This kind of move is all the more remarkable when you consider that the U.S. economy remains in a funk. With the exception of the fourth quarter of 2011, the U.S. economy has failed to grow in excess of 2%.

The 2% level is a crucial point for the U.S. economy. When the economy grows above this rate, companies' sales and profits can expand. Equally important: Bankers start to relax, issuing more loans and showing more tolerance for companies that may be dealing with a too-high debt load.

Yet here's the bad news: the economy started to slow in the second quarter of 2012, growing just 1.3%. This figure was just revised -- economists initially thought the economy had grown at a 1.7% pace. And it's unlikely to get better any time soon. The U.S. Commerce Department just announced that orders for durable goods fell 13% in August 2012 compared to a year ago. This is the biggest decrease since January 2009 and the lowest dollar figure for new orders since February 2011.

The outlook for gross domestic product growth in the quarters ahead: Weak. The U.S. economy is on track to post a mere 1.5% growth in 2012, and in light of the fiscal cliff and other headwinds, might do even more poorly in 2013.

That may augur in a sea-change in the world of lending officers. Not only will those folks be less inclined to issue new loans, but they may look to pull the plug and call in existing loans if they slip out of legal restrictions, known as "debt covenants."

Against such a backdrop, I think it's prudent to start tracking the companies that are vulnerable to a weak economy. These are firms that carry too much debt (especially of the short-term kind) or too little cash to handle still-negative operating cash flows. If these companies hit a cash crunch, then the bankers may be of no help, pushing their stock prices toward zero.

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Starting with this column, I'll provide an ongoing look at some of our nation's most vulnerable companies. I'll also provide a handy gauge that anticipates just how likely a company is to tumble into bankruptcy.

In this column, I'll first take a brief look at potential bankruptcy candidates I've looked at in the past. And in coming weeks and months, I'll be adding to this list, tracking all of them until they take steps to sharply improve their balance sheets, or the U.S. economy starts to grow at a more robust pace.