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.

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.

Unifirst (UNF Quick QuoteUNF - Free Report) is a stock many investors are watching right now. UNF is currently sporting a Zacks Rank of #2 (Buy), as well as an A grade for Value.

Another notable valuation metric for UNF is its P/B ratio of 1.88. 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 company's current P/B looks solid when compared to its industry's average P/B of 4.32. Over the past 12 months, UNF's P/B has been as high as 2.01 and as low as 1.36, with a median of 1.59.

Finally, investors will want to recognize that UNF has a P/CF ratio of 13.95. 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. UNF's current P/CF looks attractive when compared to its industry's average P/CF of 25.10. Over the past year, UNF's P/CF has been as high as 14.90 and as low as 10.67, with a median of 12.57.

These are only a few of the key metrics included in Unifirst'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, UNF looks like an impressive value stock at the moment.