European stock futures advanced on Friday amid an optimism brought to the markets as Japan's economic growth bounced back from contraction in the Q4. Euro Stoxx 50 Index futures added 0.5% to 2,699 earlier on Friday, while U.K.'s FTSE 100 Index gained 0.2%. So far this year, the Stoxx Europe 600 Index has added 4.8% heading for its largest biggest advance in a 9-week period.