Amazon reported fourth quarter sales after the close of the market on Wednesday, with results that surprised analysts by underperforming on sales growth versus expectations, even though they had higher income than expected. Since the stock price is driven by growth first and earnings later, shares declined from their all-time high in early trading, down about 3 percent in the first half hour on Friday. Investors were also unhappy with first quarter 2017 guidance, with lower profits expected again due to “continuation of the step-up investment that we saw in the second half of last year.” Net sales for the quarter were […]