Stocks drift between gains and losses as investors weigh earnings, mergers and news on Greece

U.S. stock indexes are drifting between small gains and losses at midday, as investors weigh the latest batch of corporate earnings and mergers, and the implications of an election victory in Greece by a party opposed to that country's bailout plan.

The Dow Jones industrial eased six points to 17,666 as of 12:05 p.m. Eastern time Monday. The Standard & Poor's 500 edged up one point to 2,053. The Nasdaq composite added two points to 4,761.