US stocks end mixed

US stocks were mixed today after earnings reports from General Motors and Merck pushed the Dow Jones industrial average up to a six-year high while the Nasdaq composite sagged along with eBay.

Dow component General Motors’ stock gained 10% after the vehicle manufacturer record revenues along with reported its sixth straight quarterly loss. Drugmaker Merck, also a Dow component, reported an 11% jump in first-quarter profit.