While the proven Zacks Rank places an emphasis on earnings estimates and estimate revisions to find strong stocks, we also know that investors tend to develop their own individual strategies. With this in mind, we are always looking at value, growth, and momentum trends to discover great companies.

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 fundamental analysis and traditional valuation metrics to find stocks that they believe are being undervalued by the market at large.

Zacks has developed the innovative Style Scores system to highlight stocks with specific traits. For example, value investors will be interested in stocks with great grades in the "Value" category. When paired with a high Zacks Rank, "A" grades in the Value category are among the strongest value stocks on the market today.

Glencore (GLNCY Quick QuoteGLNCY - Free Report) is a stock many investors are watching right now. GLNCY is currently holding a Zacks Rank of #2 (Buy) and a Value grade of A. The stock holds a P/E ratio of 9.57, while its industry has an average P/E of 12.24. GLNCY's Forward P/E has been as high as 14.70 and as low as 6.68, with a median of 11.52, all within the past year.

Another valuation metric that we should highlight is GLNCY's P/B ratio of 1.74. Investors use the P/B ratio to look at a stock's market value versus its book value, which is defined as total assets minus total liabilities. This stock's P/B looks solid versus its industry's average P/B of 4.17. Within the past 52 weeks, GLNCY's P/B has been as high as 2.03 and as low as 1.48, with a median of 1.72.

Value investors will likely look at more than just these metrics, but the above data helps show that Glencore is likely undervalued currently. And when considering the strength of its earnings outlook, GLNCY sticks out at as one of the market's strongest value stocks.