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, value investing is easily one of the most popular ways to find great stocks in any market environment. Value investors use a variety of methods, including tried-and-true valuation metrics, to find these stocks.

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 HF Sinclair (DINO Quick QuoteDINO - Free Report) . DINO is currently sporting a Zacks Rank #2 (Buy), as well as an A grade for Value.

Investors should also recognize that DINO has a P/B ratio of 1.05. The P/B ratio pits a stock's market value against its book value, which is defined as total assets minus total liabilities. DINO's current P/B looks attractive when compared to its industry's average P/B of 1.92. Over the past year, DINO's P/B has been as high as 1.06 and as low as 0.53, with a median of 0.76.

Value investors also use the P/S ratio. The P/S ratio is calculated as price divided by sales. Some people prefer this metric because sales are harder to manipulate on an income statement. This means it could be a truer performance indicator. DINO has a P/S ratio of 0.35. This compares to its industry's average P/S of 0.39.

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