Amazon broke previous records with its Q4 sales, and shares skyrocketed 10 percent in after-hours trading, adding $100 billion to its market value. Profits rose 8 percent to $3.3 billion during the holiday quarter, after suffering a 25 percent decline in Q3 due to the expenses of one-day shipping for Prime members. Q4 revenue rose 21 percent to $87.4 billion from the same period a year earlier.  A FactSet survey showed that earnings per share were $6.47 whereas analysts had predicted $4.04. Continue reading Amazon Reports Booming Sales, Profits, and Share Prices