The proven Zacks Rank system focuses on earnings estimates and estimate revisions to find winning stocks. Nevertheless, we know that our readers all have their own perspectives, so we are always looking at the latest trends in value, growth, and momentum to find strong picks.Considering these trends, value investing is clearly one of the most preferred ways to find strong stocks in any type of market. Value investors use fundamental analysis and traditional valuation metrics to find stocks that they believe are being undervalued by the market at large.On top of the Zacks Rank, investors can also look at our innovative Style Scores system to find stocks with specific traits. For example, value investors will want to focus on the "Value" category. Stocks with high Zacks Ranks and "A" grades for Value will be some of the highest-quality value stocks on the market today.VALE S.A. (VALE) is a stock many investors are watching right now. VALE is currently holding a Zacks Rank of #2 (Buy) and a Value grade of A. The stock holds a P/E ratio of 3.94, while its industry has an average P/E of 3.96. VALE's Forward P/E has been as high as 7.04 and as low as 3.94, with a median of 5.10, all within the past year.Finally, investors will want to recognize that VALE has a P/CF ratio of 7.69. This metric focuses on a firm's operating cash flow and is often used to find stocks that are undervalued based on the strength of their cash outlook. This company's current P/CF looks solid when compared to its industry's average P/CF of 9.58. VALE's P/CF has been as high as 14.18 and as low as 6.25, with a median of 10.80, all within the past year.Value investors will likely look at more than just these metrics, but the above data helps show that VALE S.A. Is likely undervalued currently. And when considering the strength of its earnings outlook, VALE sticks out at as one of the market's strongest value stocks. Zacks' Top Picks to Cash in on Artificial Intelligence In 2021, this world-changing technology is projected to generate $327.5 billion in revenue. Now Shark Tank star and billionaire investor Mark Cuban says AI will create "the world's first trillionaires." Zacks' urgent special report reveals 3 AI picks investors need to know about today.See 3 Artificial Intelligence Stocks With Extreme Upside Potential>>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 VALE S.A. (VALE): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research