Here at Zacks, we focus on our proven ranking system, which places an emphasis on earnings estimates and estimate revisions, to find winning stocks. But we also understand that investors develop their own strategies, so we are constantly looking at the latest trends in value, growth, and momentum to find strong companies for our readers.Considering these trends, value investing is clearly one of the most preferred ways to find strong stocks in any type of market. Value investors rely on traditional forms of analysis on key valuation metrics to find stocks that they believe are undervalued, leaving room for profits.Luckily, Zacks has developed its own Style Scores system in an effort to find stocks with specific traits. Value investors will be interested in the system's "Value" category. Stocks with both "A" grades in the Value category and high Zacks Ranks are among the strongest value stocks on the market right now.One stock to keep an eye on is Lennar (LEN). LEN is currently sporting a Zacks Rank of #2 (Buy), as well as a Value grade of A. The stock has a Forward P/E ratio of 9.62. This compares to its industry's average Forward P/E of 10.87. Over the past year, LEN's Forward P/E has been as high as 12.14 and as low as 4.67, with a median of 10.22.LEN is also sporting a PEG ratio of 0.84. This popular metric is similar to the widely-known P/E ratio, with the difference being that the PEG ratio also takes into account the company's expected earnings growth rate. LEN's PEG compares to its industry's average PEG of 2.16. Within the past year, LEN's PEG has been as high as 3.76 and as low as 0.50, with a median of 1.04.Value investors will likely look at more than just these metrics, but the above data helps show that Lennar is likely undervalued currently. And when considering the strength of its earnings outlook, LEN 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 Lennar Corporation (LEN): Free Stock Analysis Report To read this article on Zacks.com click here.