P/S Ratio of Price-to-Sales: It is the difference between the market value of the stock of a firm and the book value. If any P/B ratio is less than 1 then a firm may be under-valued. ROE: ROE shows profitability of a firm in terms of shareholders' equity. It depicts a good signal about how suitably a firm can generate profit using equity. https://finxl.in/best-financial-modeling-course.html