Stocks turned negative in the final half hour of trading after House leaders delayed a vote on the Republicans' health care bill. The Trump administration and Speaker Ryan have struggled to whip up support for the bill. Disney (DIS) - Get Report has extended CEO and Chairman Bob Iger's contract until early July 2019, later than its original expiration in June of next year. The extension buys Disney more time to find a suitable successor to Iger. Five Below (FIVE) - Get Report rallied after exceeding quarterly earnings estimates on double-digit growth in revenue. Sales rose 19% over the quarter, while comparable sales climbed 1%. Whole Foods Market (WFM) fell after UBS initiated coverage with a SELL rating. Analyst Michael Lasser said the supermarket chain is having difficulty competing against Trader Joe's and Sprout's Farmer's Market.