The Mistake Everyone's Making Now

There is bleak news as far as the eye can see. The credit market is still locked up -- banks are having trouble judging other banks' exposure to bad debt, so they simply aren't lending money to each other. Home prices have been dropping at a record pace. And all this turmoil is having an effect on the economy -- retailers had a challenging Christmas, barely matching the low expectations for sales growth.

In the face of all this bad news, it is tempting to sell and wait for better times. When your portfolio falls by 15% in a month, a T-bill's safe 3.5% annual return starts to look pretty good.

But that can be a huge mistake.

The safest way to lose money
While T-bills may ensure that you don't lose money in the short term, they can also ensure that you do not have enough money for retirement. In fact, it's likely that in real terms, you'll actually lose money in T-bills.

Recently, T-bills have been paying about 3.5%. From this, you have to subtract taxes, which lowers your return. But that's not all. Recently, inflation has been ticking up at an annual rate of 4.3%, eroding the value of both your principal and interest. Add it all up, and it's clear that if you take into account inflation and taxes, T-bill investments are a time bomb that will cost you purchasing power.

So, you've reduced your risk by guaranteeing that you'll lose money.

Maybe you'll claim that T-bills are just a short-term hedge, and you'll buy back into the stock market when the volatility's past. But by the time there's nothing but blue skies, there's a good chance that the market will have rallied, and you will have missed out on a large chunk of the profits.

Lower-risk investing
However, there is a strategy to both reduce risk and achieve huge profits in the stock market. And the strategy actually works best in a choppy market like we have now.

Just buy stocks for much less than they're worth.

The reasoning is simple. If you pay $30 for a stock worth $50, it's much more likely that the stock will jump to $50 than fall to $20. So you've reduced your downside risk. At the same time, you still have a huge upside, because you can be confident that the stock will eventually return to its fair value. So buying undervalued stocks helps to ensure that you buy low and sell high.

Some cheap stocks
Right now is the ideal time to look for bargains. Just look at how cheap some of these stocks are:

These are all big names that aren't directly tied to the current housing and debt woes. They all have significant competitive advantages in their niche. Sure, these businesses may feel the effects of a potential recession, but it's likely that they will easily survive any short-term turbulence. Yet they're all trading at significantly lower valuations than they have been for the last five years.

These stocks can be bought cheaply now. But if you wait for everyone to be happy with the economy, it's likely that you'll miss out on much of the upside. That's why, in a market like this, you should be particularly active in identifying undervalued opportunities.

The Foolish bottom line
What's more, these stocks -- while cheap -- aren't even the best opportunities in the market. Our Inside Value newsletter focuses on finding the cheapest stocks that have the best potential for extraordinary returns.

We've identified five companies trading for less than 50% of what they're worth and another 10 that are undervalued by more than 40%. These are the hugely undervalued stocks that will help you outperform in 2008's choppy market. If you're interested in checking them out, we offer a free trial.

Fool contributor Richard Gibbons sat in the house all that cold, cold, wet day. He does not have a position in any of the stocks discussed above. Petsmart is a Motley Fool Stock Advisor pick. The Fool disclosure policy is jolly.