Below is a definition and explanation of various financial metrics as used in yahoo finance on Ford Motor Company as at full year 31st December 2013.
Trailing P/E is a total of a given company’s price to its earnings, which is normally calculated by taking the prevailing stock price in the market at that time and subsequently dividing it by the stock’s trailing earnings for each share over a period of the past one year. The financial ratio (trailing P/E ratio) is arrived at as follows: Trailing P/E Ratio = Current Share Price
Trailing earnings per share for the last twelve months
It is based on real rather than estimated ...