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.

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.

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.

Yara International ASA (YARIY Quick QuoteYARIY - Free Report) is a stock many investors are watching right now. YARIY is currently sporting a Zacks Rank #2 (Buy), as well as a Value grade of A. The stock holds a P/E ratio of 10.48, while its industry has an average P/E of 11.93. Over the past year, YARIY's Forward P/E has been as high as 13.77 and as low as 9.27, with a median of 11.02.

We should also highlight that YARIY has a P/B ratio of 1.15. The P/B ratio pits a stock's market value against 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 2.31. Over the past 12 months, YARIY's P/B has been as high as 1.36 and as low as 0.87, with a median of 1.08.

Value investors also love the P/S ratio, which is calculated by simply dividing a stock's price with the company's 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. YARIY has a P/S ratio of 0.77. This compares to its industry's average P/S of 1.16.

Finally, investors should note that YARIY has a P/CF ratio of 5.28. 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 company's current P/CF looks solid when compared to its industry's average P/CF of 9.24. YARIY's P/CF has been as high as 7.77 and as low as 4.21, with a median of 5.60, all within the past year.

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