The U.S. stock market edged higher on Thursday, building on four days of gains and sending the Dow Jones Industrial Average to an intraday record. Markets had a muted reaction to weaker-than-expected jobless claims numbers and wider gap in the U.S. trade deficit. European Central Bank President Mario Draghi told reporters the central bank had considered quantitative easing. Investors await a report on the health of the services sector, due at due at 10 a.m. Eastern. The Dow Jones Industrial Average gained 18 points, or 0.2%, to 16,589.19 at the open, hitting an intraday record. The S&P 500 opened 2 points, or 0.1%, higher at 1,893.13, after hitting an intraday record on Wednesday. The Nasdaq Composite began the day up 2 points, or 0.1%, at 4,280.30.