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.

Of these, value investing is easily one of the most popular ways to find great stocks in any market environment. 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 Ping An Insurance Co. of China (PNGAY Quick QuotePNGAY - Free Report) . PNGAY is currently sporting a Zacks Rank #2 (Buy), as well as an A grade for Value. The stock holds a P/E ratio of 6.33, while its industry has an average P/E of 9.21. PNGAY's Forward P/E has been as high as 7.81 and as low as 4.52, with a median of 5.81, all within the past year.

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 preferred metric because revenue can't really be manipulated, so sales are often a truer performance indicator. PNGAY has a P/S ratio of 0.77. This compares to its industry's average P/S of 1.08.

These figures are just a handful of the metrics value investors tend to look at, but they help show that Ping An Insurance Co. of China is likely being undervalued right now. Considering this, as well as the strength of its earnings outlook, PNGAY feels like a great value stock at the moment.