To find out whether they really work, we tried four of them—GoodRx, LowestMed, Mobile Rx Card, and WeRx—to price a month's supply of the cholesterol-lowering drug Lipitor (40 milligrams ...

The Price to Earnings (P/E) ratio, a key valuation measure, is calculated by dividing the stock's most recent closing price by the sum of the diluted earnings per share from continuing operations ...