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
1/9/2012 17,779,570 14,460,020 12,574 36,978,520 2,941 12,285 33,658,968 2,740 3,319,550
1/6/2012 13,772,580 20,261,200 12,409 33,551,850 2,704 13,383 40,040,472 2,992 -6,488,620
1/5/2012 13,909,440 20,281,170 11,655 31,131,010 2,671 12,858 37,502,740 2,917 -6,371,730
1/4/2012 16,001,780 18,690,910 11,813 35,645,140 3,017 13,781 38,334,272 2,782 -2,689,130
1/3/2012 18,386,870 14,309,600 11,649 32,123,900 2,758 11,334 28,046,630 2,475 4,077,270
12/30/2011 24,858,180 19,476,020 15,067 51,299,260 3,405 14,538 45,917,100 3,158 5,382,160
12/29/2011 14,041,110 21,008,410 11,774 35,816,408 3,042 13,401 42,783,712 3,193 -6,967,300
12/28/2011 20,922,510 19,835,790 15,562 47,538,072 3,055 13,414 46,451,352 3,463 1,086,720
12/27/2011 11,991,770 28,947,450 10,989 38,456,460 3,500 15,358 55,412,140 3,608 -16,955,680
12/26/2011 10,381,160 23,479,620 10,380 29,802,280 2,871 13,120 42,900,740 3,270 -13,098,460
12/23/2011 19,073,650 23,166,110 13,916 40,810,528 2,933 13,764 44,902,992 3,262 -4,092,460
12/22/2011 10,547,600 34,394,312 14,400 41,934,392 2,912 16,986 65,781,100 3,873 -23,846,710
12/21/2011 18,723,600 22,307,790 13,779 42,029,980 3,050 13,925 45,614,168 3,276 -3,584,190
12/20/2011 14,656,860 26,459,780 12,306 36,026,768 2,928 15,429 47,829,688 3,100 -11,802,920
12/19/2011 18,329,720 21,439,550 12,606 39,307,552 3,118 15,402 42,417,380 2,754 -3,109,830
12/16/2011 31,920,600 18,922,970 18,220 63,750,680 3,499 15,339 50,753,048 3,309 12,997,630
12/15/2011 22,528,580 27,000,010 15,984 56,214,560 3,517 17,045 60,685,992 3,560 -4,471,430
12/14/2011 16,462,510 28,599,220 15,524 49,042,288 3,159 17,332 61,179,000 3,530 -12,136,710
12/13/2011 16,742,130 26,134,910 14,814 40,863,928 2,758 15,731 50,256,712 3,195 -9,392,780
12/12/2011 20,153,750 23,927,780 14,752 45,179,240 3,063 15,378 48,953,272 3,183 -3,774,030