The ride-sharing company slipped on a disappointing earnings report.Shares of Grab Holdings (GRAB -5.93%) were heading lower today after Southeast Asia's leading ride-sharing business posted disappointing results in its second-quarter results.As of 1:20 p.m. ET, the stock was down 5.9% on the news. Grab comes up shortRevenue in the quarter rose 17%, or 23% in constant currency to $664 million, which missed estimates at$673.2 million. Gross merchandise volume (GMV), or the total value of all orders, grew mo ...