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.Looking at the history of these trends, perhaps none is more beloved than value investing. This strategy simply looks to identify companies that are being undervalued by the broader market. Value investors use tried-and-true metrics and fundamental analysis to find companies that they believe are undervalued at their current share price levels.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.One company value investors might notice is Citizens Community Bancorp (CZWI). CZWI is currently holding a Zacks Rank of #2 (Buy) and a Value grade of A. The stock has a Forward P/E ratio of 9.39. This compares to its industry's average Forward P/E of 9.62. Over the past 52 weeks, CZWI's Forward P/E has been as high as 12.31 and as low as 7.62, with a median of 9.49.We should also highlight that CZWI has a P/B ratio of 0.93. The P/B ratio pits a stock's market value against its book value, which is defined as total assets minus total liabilities. This stock's P/B looks solid versus its industry's average P/B of 0.97. Within the past 52 weeks, CZWI's P/B has been as high as 1 and as low as 0.77, with a median of 0.86.Value investors also use the P/S ratio. The P/S ratio is is calculated as price divided by sales. This is a popular metric because sales are harder to manipulate on an income statement, so they are often considered a better performance indicator. CZWI has a P/S ratio of 1.87. This compares to its industry's average P/S of 2.57.Finally, our model also underscores that CZWI has a P/CF ratio of 6.24. This metric focuses on a firm's operating cash flow and is often used to find stocks that are undervalued based on the strength of their cash outlook. CZWI's current P/CF looks attractive when compared to its industry's average P/CF of 8.97. Over the past 52 weeks, CZWI's P/CF has been as high as 6.56 and as low as 5.12, with a median of 5.65.Value investors will likely look at more than just these metrics, but the above data helps show that Citizens Community Bancorp is likely undervalued currently. And when considering the strength of its earnings outlook, CZWI sticks out at as one of the market's strongest value stocks. Zacks Names "Single Best Pick to Double" From thousands of stocks, 5 Zacks experts each have chosen their favorite to skyrocket +100% or more in months to come. From those 5, Director of Research Sheraz Mian hand-picks one to have the most explosive upside of all. It’s a little-known chemical company that’s up 65% over last year, yet still dirt cheap. With unrelenting demand, soaring 2022 earnings estimates, and $1.5 billion for repurchasing shares, retail investors could jump in at any time. This company could rival or surpass other recent Zacks’ Stocks Set to Double like Boston Beer Company which shot up +143.0% in little more than 9 months and NVIDIA which boomed +175.9% in one year.Free: See Our Top Stock and 4 Runners Up >>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 Citizens Community Bancorp, Inc. (CZWI): Free Stock Analysis ReportTo read this article on Zacks.com click here.Zacks Investment Research