CORRECTED: Wall Street trims gains as Greece debt default looms

The Dow Jones Industrial Average and the S&P 500 were up about 0.4 percent on the last day of the second quarter, nearly halving early gains. Until there is clarity on Greece, the market will continue to see increased volatility, said Anthony Conroy, who has previouly worked as head trader for ConvergEx in New York. The CBOE Volatility index, a measure of the premium traders are willing to pay for protection against a drop in the S&P 500, was slightly down at 18.81.