Wall Street may seek to put the Greek worries behind and push ahead with the aid of the opportunity provided by yesterday’s sell-off that saw the major averages slip to multi-month lows. The major U.S. index futures point to a higher opening on Tuesday. Asian markets rebounded earlier in the global trading day, while the markets in Europe, where the crisis is centered, are experiencing weakness. With the second quarter drawing to a close, stocks in the domestic markets may witness some volatility. The focus of the day is also likely to be on economic data on house prices, consumer confidence and regional manufacturing activity.