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
8/1/2012 36,733,392 30,851,690 21,173 62,634,888 2,958 17,451 56,753,192 3,252 5,881,700
7/31/2012 40,691,600 29,705,420 18,830 61,322,880 3,257 17,141 50,336,700 2,937 10,986,180
7/30/2012 40,253,992 31,374,470 20,051 63,845,660 3,184 16,978 54,966,140 3,237 8,879,520
7/27/2012 40,545,928 49,173,872 23,227 74,785,928 3,220 23,456 83,413,872 3,556 -8,627,940
7/26/2012 54,345,368 34,109,700 26,079 84,071,952 3,224 18,899 63,836,280 3,378 20,235,670
7/25/2012 39,449,800 43,228,448 27,259 78,533,872 2,881 21,541 82,312,520 3,821 -3,778,650
7/24/2012 27,529,920 51,752,528 24,547 69,006,312 2,811 24,812 93,228,920 3,757 -24,222,610
7/23/2012 37,533,712 54,948,848 26,362 84,113,024 3,191 28,671 101,528,160 3,541 -17,415,140
7/20/2012 55,313,140 65,114,688 32,068 122,050,704 3,806 37,847 131,852,248 3,484 -9,801,550
7/19/2012 64,573,820 34,327,592 34,566 137,443,888 3,976 32,430 107,197,664 3,306 30,246,230
7/18/2012 54,409,500 45,985,432 25,840 91,840,896 3,554 28,588 83,416,832 2,918 8,424,070
7/17/2012 66,995,152 25,829,290 26,271 102,725,120 3,910 21,153 61,559,260 2,910 41,165,860
7/16/2012 37,124,592 45,064,992 21,897 76,255,752 3,482 27,288 84,196,152 3,085 -7,940,400
7/13/2012 57,723,088 24,411,810 28,266 109,804,576 3,885 25,059 76,493,296 3,053 33,311,280
7/12/2012 39,281,840 29,207,600 19,705 63,478,488 3,221 17,578 53,404,248 3,038 10,074,240
7/11/2012 35,751,700 29,600,560 18,602 55,413,140 2,979 15,459 49,262,000 3,187 6,151,140
7/10/2012 35,231,248 30,378,130 19,396 59,018,680 3,043 16,406 54,165,560 3,302 4,853,120
7/9/2012 17,423,660 45,470,752 16,163 45,892,392 2,839 21,837 73,939,480 3,386 -28,047,090
7/6/2012 42,904,048 36,432,800 23,446 78,665,568 3,355 23,083 72,194,320 3,128 6,471,250
7/5/2012 36,998,920 32,733,620 21,175 65,259,100 3,082 18,635 60,993,800 3,273 4,265,300