Stocks were lower at Thursday's opening bell after personal incomes unexpectedly dropped in March. Economists had expected an increase of 0.2%. Personal spending was also softer than expected, increasing just 0.3% and coming in below estimates. Yelp (YELP) plummeted after issuing a sales forecast below estimates for the current quarter. Time Warner Cable (TWC) shares were on watch after reporting quarterly earnings and revenue below estimates. Exxon Mobil (XOM) was higher after beating estimates in its first quarter. Sales tanked 37% from a year earlier, though, as lower oil prices ate into the topline. Apple (AAPL) shares were under pressure after reports a component in the Apple Watch was found to be defective.