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, 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 rely on traditional forms of analysis on key valuation metrics to find stocks that they believe are undervalued, leaving room for profits.

In addition to the Zacks Rank, investors looking for stocks with specific traits can utilize our Style Scores system. Of course, value investors will be most interested in the system's "Value" category. Stocks with "A" grades for Value and high Zacks Ranks are among the best value stocks available at any given moment.

One stock to keep an eye on is Arkema (ARKAY Quick QuoteARKAY - Free Report) . ARKAY is currently sporting a Zacks Rank #2 (Buy), as well as an A grade for Value. The stock holds a P/E ratio of 9.76, while its industry has an average P/E of 12.91. Over the last 12 months, ARKAY's Forward P/E has been as high as 10.61 and as low as 7.52, with a median of 9.06.

Value investors also frequently use the P/S ratio. This metric is found by dividing a stock's price with the company's revenue. This is a preferred metric because revenue can't really be manipulated, so sales are often a truer performance indicator. ARKAY has a P/S ratio of 0.45. This compares to its industry's average P/S of 0.71.

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