This week, I’m going to focus on a simple strategy that uses the PEG Ratio for determining a company’s under- or overvaluation.

Let’s first start with a definition.

A PEG ratio is simply the:

P/E Ratio divided by the Growth Rate

A value of 1 or less is considered good (at par or undervalued), while a value of greater than 1 is, in general, not as good (overvalued).

Once again, the PEG Ratio is simply the P/E Ratio divided by the Growth Rate. Many believe this ratio tells a more complete story than just the P/E.

A company with a P/E Ratio of 25 and a Growth Rate of 20 would have a PEG Ratio of 1.25 (25 / 20 = 1.25).

While a company with a P/E Ratio of 40 and a Growth Rate of 50 would have a PEG Ratio of 0.8.

Traditionally, investors would look at the stock with the lower P/E Ratio and deem it a bargain (undervalued). But looking at it closer, you can see it doesn’t have the growth rate to justify its P/E.

The stock with the P/E of 40, though, is actually the better bargain since its PEG Ratio is lower (0.8), implying it’s undervalued with more potential value. (Undervalued in relation to its projected growth rate.)

In other words, the lower the PEG, the better the value, because the investor would be paying less for each unit of earnings growth.

So for this week’s screen, we’re going to use the PEG ratio to find value.

Let’s first start with:

• Zacks Rank less than or equal to 2
  (Only stocks with a Zacks Rank of Strong Buy or Buy get through.)
• Average Broker Rating less than or equal to 2.5
  (The brokers too have to be on board as well. Only companies in the better part of a Strong Buy or Buy are allowed.)
• Projected One Year Growth Rate >= 20
  (Strong performers are what we’re looking for.)
• PEG Ratio less than 1
  (P/E using F(1) divided by its F(1) projected growth rate.) (We’re using a classic, text book example to identify undervalued stocks.)
• Price >= $5

Here are 5 stocks from this week’s list (for Tuesday, 11/3/09):

BUCY Bucyrus International, Inc.

DV DeVry Inc.

IMA Inverness Medical Innovations, Inc.

OSIS OSI Systems, Inc.

SCHL Scholastic Corp.

Sign up now for your 2-week free trial to the Research Wizard and get the rest of the stocks on this list and start using this screen in your own trading. Or create your own strategies and test them first before you invest. Know what to buy and when to sell.

Get started with your free trial today.

Disclosure: Officers, directors and/or employees of Zacks Investment Research may own or have sold short securities and/or hold long and/or short positions in options that are mentioned in this material. An affiliated investment advisory firm may own or have sold short securities and/or hold long and/or short positions in options that are mentioned in this material.

Disclosure: Performance information for Zacks’ portfolios and strategies are available at: http://www.zacks.com/performance.

Zacks Investment Research

Last 5 posts by Kevin Matras

• How to Be a Better Trader - November 20th, 2009
• Zacks.com featured expert Kevin Matras highlights: AVX Corp., Macquarie Infrastructure Company LLC, Newmont Mining Corp., Shaw Communications, Inc. and SLM Corp. - Press Releases - November 18th, 2009
• What's your Stock's Price Target? - Screen of the Week - November 18th, 2009
• What's your Stock's Price Target? - Screen of the Week - November 17th, 2009
• Zacks.com featured expert Kevin Matras highlights: Bare Escentuals, Inc., Cantel Medical Corp., HealthSpring, Inc., Toro Company and Viacom Inc. - Press Releases - November 10th, 2009