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.

Of these, value investing is easily one of the most popular ways to find great stocks in any market environment. Value investors use tried-and-true metrics and fundamental analysis to find companies that they believe are undervalued at their current share price levels.

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.

One company value investors might notice is ENGIE - Sponsored ADR (ENGIY Quick QuoteENGIY - Free Report) . ENGIY is currently sporting a Zacks Rank #2 (Buy), as well as a Value grade of A. The stock is trading with a P/E ratio of 9.66, which compares to its industry's average of 16.62. Over the last 12 months, ENGIY's Forward P/E has been as high as 11.37 and as low as 6.67, with a median of 9.61.

Another valuation metric that we should highlight is ENGIY's P/B ratio of 1.14. The P/B ratio pits a stock's market value against 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 3.04. Within the past 52 weeks, ENGIY's P/B has been as high as 1.28 and as low as 0.86, with a median of 1.05.

These are only a few of the key metrics included in ENGIE - Sponsored ADR'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, ENGIY looks like an impressive value stock at the moment.