The proven Zacks Rank system focuses on earnings estimates and estimate revisions to find winning stocks. Nevertheless, we know that our readers all have their own perspectives, so we are always looking at the latest trends in value, growth, and momentum to find strong picks.Of these, perhaps no stock market trend is more popular than value investing, which is a strategy that has proven to be successful in all sorts of market environments. Value investors use fundamental analysis and traditional valuation metrics to find stocks that they believe are being undervalued by the market at large.On top of the Zacks Rank, investors can also look at our innovative Style Scores system to find stocks with specific traits. For example, value investors will want to focus on the "Value" category. Stocks with high Zacks Ranks and "A" grades for Value will be some of the highest-quality value stocks on the market today.One company to watch right now is KB Home (KBH). KBH is currently holding a Zacks Rank of #1 (Strong Buy) and a Value grade of A. The stock is trading with P/E ratio of 9.50 right now. For comparison, its industry sports an average P/E of 11.27. KBH's Forward P/E has been as high as 12.27 and as low as 8.13, with a median of 9.54, all within the past year.Investors should also note that KBH holds a PEG ratio of 0.87. This metric is used similarly to the famous P/E ratio, but the PEG ratio also takes into account the stock's expected earnings growth rate. KBH's PEG compares to its industry's average PEG of 1.15. Over the past 52 weeks, KBH's PEG has been as high as 1.32 and as low as 0.79, with a median of 1.09.Another valuation metric that we should highlight is KBH's P/B ratio of 1.34. The P/B ratio pits a stock's market value against its book value, which is defined as total assets minus total liabilities. This company's current P/B looks solid when compared to its industry's average P/B of 1.38. Over the past year, KBH's P/B has been as high as 1.49 and as low as 0.91, with a median of 1.13.Value investors also love the P/S ratio, which is calculated by simply dividing a stock's price with the company's sales. This is a prefered metric because revenue can't really be manipulated, so sales are often a truer performance indicator. KBH has a P/S ratio of 0.68. This compares to its industry's average P/S of 0.74.Value investors will likely look at more than just these metrics, but the above data helps show that KB Home is likely undervalued currently. And when considering the strength of its earnings outlook, KBH sticks out at as one of the market's strongest value stocks.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report KB Home (KBH): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research