The latest move by MGM Resorts International to address the company's liquidity concerns drew a positive recommendation from Moody's Investors Service Tuesday. The ratings agency upped its opinion of the Las Vegas-based casino operator after the company said it hoped to raise about $500 million in unsecured notes due in 2016. Moody's changed its outlook on MGM Resorts to positive from stable. "The outlook revision to positive reflects the favorable impact on MGM's liquidity," Moody's gaming analyst Keith Foley said in a report. The company plans to use the funds, along with $511 million raised from a stock offering last week, to retire about $1.2 billion of debt that matures in October 2011. MGM Resorts has about $13 billion in long term debt. "Moody's anticipates that MGM will now have sufficient revolver capacity to meet its 2011 and 2012 required debt amortizations and guaranty funding obligations for CityCenter," Foley said.