"It's difficult to find what we're not liking" for American Express's (AXP) earnings, says Jenny Horne. A strong report bolstered by a big holiday shopping season wasn't enough to impress investors. Boeing (BA) gave its investors a heads up by noting a $3.5 billion cash flow loss for fourth quarter. Novo Nordisk (NVO) rallied after posting positive early-stage results for one of its weight loss drugs. Jenny takes a closer look into the market's reaction to these developing stories.