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 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.

One stock to keep an eye on is ABM Industries (ABM Quick QuoteABM - Free Report) . ABM is currently sporting a Zacks Rank of #2 (Buy) and an A for Value. The stock holds a P/E ratio of 15.48, while its industry has an average P/E of 36.60. ABM's Forward P/E has been as high as 15.83 and as low as 10.26, with a median of 12.83, all within the past year.

Value investors also frequently use the P/S ratio. This metric is found by dividing a stock's price with the company's revenue. This is a prefered metric because revenue can't really be manipulated, so sales are often a truer performance indicator. ABM has a P/S ratio of 0.43. This compares to its industry's average P/S of 0.93.

These are just a handful of the figures considered in ABM Industries'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 ABM is an impressive value stock right now.