32.9% for the week of July 13 according to this <a href="http://www.nasdaq.com/aspx/stock-market-news-story.aspx?storyid=200907231540dowjonesdjonline000914&title=press-releaseprogram-trading-averaged-329-percent-of-nyse-volume-during-july-13-17" rel="nofollow" target="_blank">http://www.nasdaq.com/aspx/stock-market-news-story.aspx?storyid=200907231540dowjonesdjonline000914&title=press-releaseprogram-trading-averaged-329-percent-of-nyse-volume-during-july-13-17</a>