U.S. Stocks Rise on Oil Rally; General Motors Upgraded by Morgan Stanley

U.S. stocks kicked off the trading week higher on Monday as oil prices gained over 1%. Crude rallied amid hopes of a production freeze among the world's biggest oil producers, something the president of Venezuela hinted at, according to news reports. Though OPEC's Secretary General said next week's OPEC meeting was an informal one and not meant for making decisions. Either way, Josh Mahony, a market analyst with IG Markets, based in London, doesn't see oil prices moving above $50 even if a deal is reached. General Motors (GM) - Get Report was upgraded to OVERWEIGHT from EQUAL WEIGHT by the analysts at Morgan Stanley amid long-term profitability prospects. Shares gained 2.5%. Lockheed Martin (LMT) - Get Report shares are also on the rise thanks to an upgrade to OUTPERFORM from MARKET PERFORM by Wells Fargo, which expects earnings growth of 20% a year until 2020. TheStreet's Scott Gamm reports from Wall Street.