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 use tried-and-true metrics and fundamental analysis to find companies that they believe are undervalued at their current share price levels.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 company to watch right now is Intercorp Financial Services (IFS). IFS is currently sporting a Zacks Rank of #2 (Buy), as well as an A grade for Value. The stock holds a P/E ratio of 6.99, while its industry has an average P/E of 12.62. IFS's Forward P/E has been as high as 13.04 and as low as 5.06, with a median of 7.35, all within the past year.Value investors also use the P/S ratio. The P/S ratio is is calculated as price divided by sales. This is a popular metric because sales are harder to manipulate on an income statement, so they are often considered a better performance indicator. IFS has a P/S ratio of 2.4. This compares to its industry's average P/S of 2.43.These are just a handful of the figures considered in Intercorp Financial Services's great Value grade. Still, they help show that the stock is likely being undervalued at the moment. Add this to the strength of its earnings outlook, and we can clearly see that IFS is an impressive value stock right now. Zacks Top 10 Stocks for 2022 In addition to the investment ideas discussed above, would you like to know about our 10 top picks for the entirety of 2022? From inception in 2012 through November, the Zacks Top 10 Stocks gained an impressive +962.5% versus the S&P 500’s +329.4%. Now our Director of Research is combing through 4,000 companies covered by the Zacks Rank to handpick the best 10 tickers to buy and hold. Don’t miss your chance to get in on these stocks when they’re released on January 3.Be First To New Top 10 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 Intercorp Financial Services Inc. (IFS): Free Stock Analysis Report To read this article on Zacks.com click here.