By Jeffry Bartash
WASHINGTON (MarketWatch) - The Institute for Supply Management's services-sector index for September is due at 10 a.m. Eastern. Economists surveyed by MarketWatch expect the ISM services index to hold steady at 53.7%, the same number as in August. Reading over 50% indicates more firms are expanding than contracting. The service sector is the largest part of the U.S. economy and employs about four out of every five U.S. workers. It's expanded for 32 straight months and overtaken the manufacturing sector as the main engine of U.S. growth.
