Here at Zacks, our focus is on the proven Zacks Rank system, which emphasizes earnings estimates and estimate revisions to find great stocks. Nevertheless, we are always paying attention to the latest value, growth, and momentum trends to underscore strong picks.

Looking at the history of these trends, perhaps none is more beloved than value investing. This strategy simply looks to identify companies that are being undervalued by the broader market. Value investors use a variety of methods, including tried-and-true valuation metrics, to find these stocks.

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 Stewart Information Services (STC Quick QuoteSTC - Free Report) . STC is currently sporting a Zacks Rank of #1 (Strong Buy), as well as a Value grade of A. The stock is trading with a P/E ratio of 8.52, which compares to its industry's average of 23.86. Over the past 52 weeks, STC's Forward P/E has been as high as 16.37 and as low as 7.85, with a median of 11.24.

Value investors also frequently use the P/S ratio. This metric is found by dividing a stock's price with the company's revenue. Some people prefer this metric because sales are harder to manipulate on an income statement. This means it could be a truer performance indicator. STC has a P/S ratio of 0.61. This compares to its industry's average P/S of 0.95.

These are only a few of the key metrics included in Stewart Information Services's strong Value grade, but they help show that the stock is likely undervalued right now. When factoring in the strength of its earnings outlook, STC looks like an impressive value stock at the moment.