S&P futures vs fair value: +6.90. Nasdaq futures vs fair value: +8.30. Stock futures currently lead fair value, suggesting an upward start to the session. Citigroup (C) is engaged in talks that could expand the government's stake in the financial services giant, according to The Wall Street Journal. The report indicated the government could take as much as 40% of Citi's common stock. Shares of C have been gyrating during premarket action, but are now trading flat at $1.95 per share ahead of the opening bell. Shares of peer Bank of America (BAC) are trading more than 1.5% higher at $3.85 per share. In a separate article, The Wall Street Journal reported Treasury advisers are lining up funds for a possible bankruptcy loan for General Motors (GM) and privately-held Chrysler. The article placed the amount of financing at $40 billion. Shares of GM are up more than 6% to $1.88 per share in premarket trading. Humana (HUM) reaffirmed its earnings outlook for fiscal 2009; the company expects earnings to range from $5.90 to $6.10 per share, while analysts peg 2009 earnings at $5.93 per share.