U.S. futures are up after a mixed session on Wednesday. In Asia, pessimism remains over euro zone debt issues. Technology is still in focus after Oracle's miss. Weak Christmas sales are dragging the retail sector down. Markets are up in Europe a day after the ECB's 3-year LTRO. Banks lead the rise in shares. Markets await final reading on Q3 U.S. GDP. IAG plans to buy BMI from Lufthansa for 172.5 million euros. The sale is seen as positive news for the German airline.