Traditionally, any value under 1. The market value of equity is typically higher than the book value of a company, P/B ratio is used by value investors to identify potential investments. As a result, any additional good news might not lead to a higher stock price. The optimal debt-to-equity ratio will tend to vary widely by industry, but the general consensus is that it should not be above a level of 2. Price to Revenue (MRQ) This is the current Price divided by the Sales Per Share for the most recent interim period. Ford (NYSE:F) is a good example of this.