The study looked at how different financial factors like Net Profit Margin, Return on Assets, Earnings per Share, and Price Earning Ratio affect the stock returns of Food and Beverage companies from 2007 to 2011. They found that all these factors together have a significant impact on stock returns. Specifically, Net Profit Margin, Earnings per Share, and Price Earning Ratio individually affect stock returns, but Return on Assets does not have a significant impact.