U.S. stocks ended at session highs thanks to a massive rally in crude oil prices on Friday. West Texas Intermediate rocketed more than 12% higher to score its best daily performance in seven years on hopes of production cuts in the Middle East. Bank stocks rebounded from steep losses suffered earlier in the week. Among the best performers Friday, Citigroup (C) climbed more than 7%, while Goldman Sachs (GS) added around $5 a share. SunEdison (SUNE) lost a third of its value over the session, trading at its lowest level since 2001. The solar company slumped after a New York Supreme Court Justice banned it from selling certain assets until litigation over a failed deal in Latin America is resolved. TheStreet's Keris Lahiff reports from Wall Street.