THELooking at the worst-performing sectors Tuesday at noon, shares of service companies underperformed other sectors, posting a loss of 0.4%. Within that group, Facebook Inc (ticker: FB) and PulteGroup Inc (ticker: PHM) are two of the day’s latecomers, posting losses of 5.0% and 3.7%, respectively. Among the larger ETFs, an ETF closely following service stocks […]