On Thursday, Amazon, the world's largest e-commerce company, released its fourth quarter results. The company reported mixed results amid a softening economy: sales growth was stronger than expected but profits fell short of projections. Better-Than...

Pfizer stock took a hit on Tuesday, falling over 3% in pre-market trading after the pharmaceutical giant announced its predictions for earnings and revenue. The company's forecasts fell below market expectations, a reflection of the slowing demand fo...