Last updated February 27th, 2009 6:50 AM ET---U.S. stock futures are trading mixed as investors react to news that Citigroup (NYSE:C) is on the verge of receiving further aid from the US government. The Wall Street Journal reported that Citigroup (NYSE:C) may receive a third lifeline from the government, which could come structured so that the government's preference shares in the bank are converted to common equity. The size of the government's stake will depend upon how the other preferred shareholders say the conversion should work. Companies due to report earnings today include Blackstone (NYSE:BX) and Interpublic Group of Companies (NYSE:IPG). Today's economic reports include a preliminary reading on fourth quarter Gross Domestic Product, the February reading on Chicago PMI and the Consumer Sentiment reading for February. At the time of this report, S&P futures are down 1.78, Nasdaq futures are up 7.60 and Dow futures are down 8.00.

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