... and the remaining 16,000 or so passively . FINDINGS REGARDING THE MARKET EVENTS OF MAY 6, 2010 REPORT OF THE STAFFS OF THE CFTC AND SEC TO THE JOINT ADVISORY COMMITTEE ON EMERGING ... May 6 and other trading days were the E-Mini, SPY, and the basket of underlying stocks in the S&P 500 Index. Consistent with the E-Mini’s very high trading volume, most of the interviewed ... resting orders in the E-Mini had already declined to less than 20% of their morning average. By way of comparison, at 2:40 p.m. buy-side resting orders in the SPY were about 75% of the morning...