Closing Bell: Salesforce Loses Interest in Twitter; U.S. Stocks Climb

Wall Street ended slightly higher Friday as a rally in the banking sector faded through the afternoon. JPMorgan (JPM) - Get Report , Citigroup (C) - Get Report and Wells Fargo (WFC) - Get Report  initially rallied after clearing low expectations. Crude oil closed lower after the number of active oil-drilling rigs in the U.S. rose over the past week. However, crude did end the week with a more than 1% gain.  Salesforce (CRM) - Get Report jumped this afternoon on reports it had lost interest in a potential acquisition of Twitter. Salesforce had been rumored to be the front-runner in deal negotiations. Viacom (VIAB) - Get Report hired financial advisers to assess a potential merger with CBS. The media company said it would not speak on the matter further unless it determines additional disclosure is required. National Amusements, the controlling shareholders of both, recently pushed for a deal. TheStreet's Keris Lahiff reports from Wall Street.