Date Unmatched Bid Vol Unmatched Ask Volume Buy Orders Buy Volume (Shares) Avg buy volume per order Sell Orders Sell Volume (Shares) Avg sell volume per order Net buy - sell volume
9/21/2010 64,957,420 43,713,448 34,622 120,253,952 3,473 34,975 99,009,984 2,831 21,243,970
9/20/2010 37,717,400 42,398,752 27,934 85,776,048 3,071 37,829 90,457,400 2,391 -4,681,350
9/17/2010 52,256,800 25,984,110 30,418 98,170,248 3,227 31,520 71,897,560 2,281 26,272,690
9/16/2010 41,482,520 28,122,120 26,971 69,503,536 2,577 23,116 56,143,140 2,429 13,360,400
9/15/2010 34,324,648 32,704,330 28,084 67,852,568 2,416 26,793 66,232,248 2,472 1,620,320
9/14/2010 46,350,240 25,099,060 31,570 80,491,040 2,550 22,526 59,239,860 2,630 21,251,180
9/13/2010 34,998,928 35,474,128 31,217 78,418,040 2,512 27,779 78,893,240 2,840 -475,200
9/10/2010 29,384,050 52,515,420 31,440 80,614,336 2,564 36,854 103,745,712 2,815 -23,131,370
9/9/2010 46,951,552 35,356,880 32,089 92,379,512 2,879 31,162 80,784,840 2,592 11,594,670
9/8/2010 41,849,688 38,647,048 31,979 93,702,592 2,930 34,829 90,499,952 2,598 3,202,640
9/7/2010 59,636,380 40,475,928 33,781 110,317,520 3,266 36,872 91,157,072 2,472 19,160,450
9/6/2010 57,091,888 18,183,100 32,545 109,363,800 3,360 25,644 70,455,008 2,747 38,908,792
9/1/2010 49,250,020 31,015,020 29,966 93,522,224 3,121 32,105 75,287,216 2,345 18,235,000
8/31/2010 49,435,520 24,181,630 31,245 101,036,360 3,234 31,003 75,782,472 2,444 25,253,890
8/30/2010 45,877,160 6,372,650 26,265 77,501,856 2,951 14,226 37,997,352 2,671 39,504,512
8/27/2010 32,382,470 24,321,160 24,117 62,694,832 2,600 23,522 54,633,520 2,323 8,061,310
8/26/2010 35,293,760 28,748,270 28,834 72,789,352 2,524 24,801 66,243,860 2,671 6,545,490
8/25/2010 14,972,350 38,724,112 22,147 62,605,168 2,827 29,119 86,356,928 2,966 -23,751,760
8/24/2010 14,469,260 31,449,090 24,779 56,041,288 2,262 24,969 73,021,120 2,924 -16,979,830
8/23/2010 19,659,790 23,409,360 18,881 40,233,072 2,131 18,826 43,982,640 2,336 -3,749,570