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.

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 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.

Siga Technologies (SIGA) is a stock many investors are watching right now. SIGA is currently holding a Zacks Rank of #2 (Buy) and a Value grade of A.

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. SIGA has a P/S ratio of 2.47. This compares to its industry's average P/S of 3.87.

Finally, investors will want to recognize that SIGA has a P/CF ratio of 4.94. This metric takes into account a company's operating cash flow and can be used to find stocks that are undervalued based on their solid cash outlook. This stock's P/CF looks attractive against its industry's average P/CF of 8.46. Within the past 12 months, SIGA's P/CF has been as high as 10.16 and as low as -90.73, with a median of 6.41.

These are just a handful of the figures considered in Siga Technologies'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 SIGA is an impressive value stock right now.

Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report

Siga Technologies Inc. (SIGA) : Free Stock Analysis Report

To read this article on Zacks.com click here.

Zacks Investment Research