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.

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.

Impala Platinum (IMPUY Quick QuoteIMPUY - Free Report) is a stock many investors are watching right now. IMPUY is currently sporting a Zacks Rank of #2 (Buy) and an A for Value. The stock has a Forward P/E ratio of 5.10. This compares to its industry's average Forward P/E of 8.98. IMPUY's Forward P/E has been as high as 94.25 and as low as -91.15, with a median of 7.59, all within the past year.

Investors should also recognize that IMPUY has a P/B ratio of 1.07. The P/B is a method of comparing a stock's market value to its book value, which is defined as total assets minus total liabilities. This stock's P/B looks attractive against its industry's average P/B of 1.11. IMPUY's P/B has been as high as 1.07 and as low as 0.26, with a median of 0.40, over the past year.

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