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.

Of these, perhaps no stock market trend is more popular than value investing, which is a strategy that has proven to be successful in all sorts of market environments. Value investors use tried-and-true metrics and fundamental analysis to find companies that they believe are undervalued at their current share price levels.

In addition to the Zacks Rank, investors looking for stocks with specific traits can utilize our Style Scores system. Of course, value investors will be most interested in the system's "Value" category. Stocks with "A" grades for Value and high Zacks Ranks are among the best value stocks available at any given moment.

One stock to keep an eye on is North American Construction (NOA Quick QuoteNOA - Free Report) . NOA is currently sporting a Zacks Rank of #1 (Strong Buy), as well as a Value grade of A. The stock is trading with a P/E ratio of 10.60, which compares to its industry's average of 11.55. Over the past 52 weeks, NOA's Forward P/E has been as high as 41.50 and as low as 9.56, with a median of 14.59.

Finally, investors should note that NOA has a P/CF ratio of 5.58. This figure highlights a company's operating cash flow and can be used to find firms that are undervalued when considering their impressive cash outlook. This stock's P/CF looks attractive against its industry's average P/CF of 8.04. Within the past 12 months, NOA's P/CF has been as high as 6.65 and as low as 2.58, with a median of 3.67.

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