Showing smoothed Price to Sales Ratio of CA Inc with missing and latest data points interpolated. Price to Sales Ratio is figured by comparing CA Inc stock price to its revenues. An advantage to using Price to Sales ratio is that it is based on CA sales, a figure that is much harder to manipulate than other CA Inc multiples. Because sales tend to be more stable P/S ratio can be a good tool for screening cyclical companies fluctuating earnings patterns. An alternative calculation method to [PS], that measures the ratio between a company's Adjusted Share Price and it's Sales per Share.