Dow Jones Industrial Average Drops More Than 150 Points After OPEC Slashes Outlook

U.S. stocks Wednesday extended losses for a second day of volatile trading as the Organization of the Petroleum Exporting Countries (OPEC) slashed its estimate of 2015 crude oil demand. OPEC reduced its estimate of next year's production to 28.9 million barrels a day, or roughly 300,000 fewer barrels than previously forecast, due to the uncertainty of demand after global oil prices plunged 40 percent since June.