Twenty Most Active Share Volume As of 4/19/2013 4:00:04 PM

Symbol     Company     Last Sale*     Change Net / %     Share Volume
MSFT Microsoft Corporation     Microsoft Corporation        $ 29.77     0.98  3.40%     96,607,041
DELL Dell Inc.     Dell Inc.        $ 13.40     0.55  3.94%     80,609,544
CSCO Cisco Systems, Inc.     Cisco Systems, Inc.        $ 20.45     0.13  0.63%     50,464,299
INTC Intel Corporation     Intel Corporation        $ 22.44     0.20  0.90%     48,451,024
QQQ PowerShares QQQ Trust, Series 1     PowerShares QQQ Trust, Series 1        $ 68.09     0.921  1.37%     36,944,753
MU Micron Technology, Inc.     Micron Technology, Inc.        $ 9.35     0.12  1.30%     32,558,247
ORCL Oracle Corporation     Oracle Corporation        $ 32.36     0.24  0.75%     30,025,889
MDLZ Mondelez International, Inc.     Mondelez International, Inc.        $ 31.68     1.58  5.25%     24,056,406
BBRY Research In Motion Limited         $ 13.85     0.35  2.59%     23,828,270
NWSA News Corporation     News Corporation        $ 31.21     0.77  2.53%     21,564,412
AAPL Apple Inc.     Apple Inc.        $ 390.50     1.55  0.40%     21,372,800
VRTX Vertex Pharmaceuticals Incorporated     Vertex Pharmaceuticals Incorporated        $ 85.36     32.49  61.45%     21,080,470
FB Facebook, Inc.     Facebook, Inc.        $ 25.74     0.05  0.19%     20,024,765
SIRI Sirius XM Radio Inc.     Sirius XM Radio Inc.        $ 3     0.015  0.50%     19,466,594
GILD Gilead Sciences, Inc.     Gilead Sciences, Inc.        $ 53.19     2.33  4.58%     17,721,271
YHOO Yahoo! Inc.     Yahoo! Inc.        $ 23.47     0.209  0.90%     17,122,840
EBAY eBay Inc.     eBay Inc.        $ 52.39     0.43  0.81%     15,501,327
CMCSA Comcast Corporation     Comcast Corporation        $ 40.56     0.57  1.43%     14,375,892
ZNGA Zynga Inc.     Zynga Inc.        $ 3.19     0.01  0.31%     12,942,057
AMAT Applied Materials, Inc.     Applied Materials, Inc.        $ 12.94     0.02  0.15%     12,464,809