GCKO -
Page of 1
  January 2010   December 2009   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 15,994,896 

ETMM
G1 Execution Services, LLC7,589,840  1  47      40,794,935  3  12      7,589,840  1  47 
NITE
Knight Capital Americas LLC7,404,897  2  46      117,551,950  2  35      7,404,897  2  46 
VFIN
vFinance Investments, Inc.703,581  3  4      11,370,324  4  3      703,581  3  4 
LAMP
Lampost Capital, L.C.101,578  4  <1      1,186,266  11  <1      101,578  4  <1 
VERT
The Vertical Trading Group100,000  5  <1      2,403,000  7  <1      100,000  5  <1 
STXG
Stockcross Financial Services50,000  6  <1      155,000  15  <1      50,000  6  <1 
AUTO
Automated Trading Desk35,000  7  <1      3,460,120  6  1      35,000  7  <1 
PUMA
Puma Capital, Llc5,000  8  <1      235,000  14  <1      5,000  8  <1 
SALI
Sterne, Agee & Leach, Inc.5,000  8  <1      25,000  18  <1      5,000  8  <1 


GCKO -
Page of 1
  February 2010   January 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 16,918,965 

ETMM
G1 Execution Services, LLC10,167,850  1  60      7,589,840  1  47      17,757,690  1  53 
NITE
Knight Capital Americas LLC5,193,065  2  30      7,404,897  2  46      12,597,962  2  38 
VFIN
vFinance Investments, Inc.977,800  3  5      703,581  3  4      1,681,381  3  5 
AUTO
Automated Trading Desk234,700  4  1      35,000  7  <1      269,700  4  <1 
DOMS
Domestic Securities, Inc.151,750  5  <1 -      151,750  7  <1 
LAMP
Lampost Capital, L.C.105,000  6  <1      101,578  4  <1      206,578  5  <1 
VERT
The Vertical Trading Group81,000  7  <1      100,000  5  <1      181,000  6  <1 
HDSN
RODMAN & RENSHAW, LLC7,800  8  <1 -      7,800  9  <1 


GCKO -
Page of 1
  March 2010   February 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 15,648,821 

NITE
Knight Capital Americas LLC7,986,949  1  51      5,193,065  2  30      20,584,911  2  42 
ETMM
G1 Execution Services, LLC4,678,354  2  29      10,167,850  1  60      22,436,044  1  46 
STXG
Stockcross Financial Services2,161,000  3  13 -      2,211,000  4  4 
VFIN
vFinance Investments, Inc.532,818  4  3      977,800  3  5      2,214,199  3  4 
DOMS
Domestic Securities, Inc.272,000  5  1      151,750  5  <1      423,750  5  <1 
AUTO
Automated Trading Desk17,700  6  <1      234,700  4  1      287,400  6  <1 


GCKO -
Page of 1
  April 2010   March 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 26,250,266 

NITE
Knight Capital Americas LLC11,148,498  1  42      7,986,949  1  51      31,733,409  1  42 
ETMM
G1 Execution Services, LLC9,094,031  2  34      4,678,354  2  29      31,530,075  2  42 
VERT
The Vertical Trading Group5,070,739  3  19 -      5,251,739  3  7 
VFIN
vFinance Investments, Inc.508,998  4  1      532,818  4  3      2,723,197  4  3 
AUTO
Automated Trading Desk140,000  5  <1      17,700  6  <1      427,400  7  <1 
DOMS
Domestic Securities, Inc.122,000  6  <1      272,000  5  1      545,750  6  <1 
HDSN
RODMAN & RENSHAW, LLC80,000  7  <1 -      87,800  9  <1 
LAMP
Lampost Capital, L.C.60,000  8  <1 -      266,578  8  <1 
STXG
Stockcross Financial Services26,000  9  <1      2,161,000  3  13      2,237,000  5  2 


GCKO -
Page of 1
  May 2010   April 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 7,115,576 

NITE
Knight Capital Americas LLC3,312,004  1  46      11,148,498  1  42      35,045,413  1  42 
ETMM
G1 Execution Services, LLC3,017,183  2  42      9,094,031  2  34      34,547,258  2  42 
VFIN
vFinance Investments, Inc.261,000  3  3      508,998  4  1      2,984,197  4  3 
HDSN
RODMAN & RENSHAW, LLC245,889  4  3      80,000  7  <1      333,689  8  <1 
DOMS
Domestic Securities, Inc.100,000  5  1      122,000  6  <1      645,750  6  <1 
AUTO
Automated Trading Desk91,500  6  1      140,000  5  <1      518,900  7  <1 
STXG
Stockcross Financial Services88,000  7  1      26,000  9  <1      2,325,000  5  2 


GCKO -
Page of 1
  June 2010   May 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 3,851,153 

NITE
Knight Capital Americas LLC1,747,548  1  45      3,312,004  1  46      36,792,961  1  42 
ETMM
G1 Execution Services, LLC1,588,005  2  41      3,017,183  2  42      36,135,263  2  42 
HDSN
RODMAN & RENSHAW, LLC200,000  3  5      245,889  4  3      533,689  8  <1 
VFIN
vFinance Investments, Inc.135,600  4  3      261,000  3  3      3,119,797  4  3 
CHDN
Chardan Capital Markets LLC100,000  5  2 -      100,000  10  <1 
AUTO
Automated Trading Desk80,000  6  2      91,500  6  1      598,900  7  <1 


GCKO -
Page of 1
  July 2010   June 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 24,445,060 

ETMM
G1 Execution Services, LLC11,485,125  1  46      1,588,005  2  41      47,620,388  1  43 
NITE
Knight Capital Americas LLC9,528,139  2  38      1,747,548  1  45      46,321,100  2  42 
HDSN
RODMAN & RENSHAW, LLC1,856,778  3  7      200,000  3  5      2,390,467  5  2 
VFIN
vFinance Investments, Inc.734,358  4  3      135,600  4  3      3,854,155  4  3 
AUTO
Automated Trading Desk562,902  5  2      80,000  6  2      1,161,802  7  1 
DOMS
Domestic Securities, Inc.217,758  6  <1 -      863,508  8  <1 
LAMP
Lampost Capital, L.C.45,000  7  <1 -      311,578  9  <1 
FANC
Finance 500, Inc.15,000  8  <1 -      15,000  11  <1 


GCKO -
Page of 1
  August 2010   July 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 11,301,155 

NITE
Knight Capital Americas LLC6,327,544  1  55      9,528,139  2  38      52,648,644  1  43 
ETMM
G1 Execution Services, LLC3,040,558  2  26      11,485,125  1  46      50,660,946  2  41 
HDSN
RODMAN & RENSHAW, LLC968,004  3  8      1,856,778  3  7      3,358,471  5  2 
AUTO
Automated Trading Desk738,304  4  6      562,902  5  2      1,900,106  7  1 
VFIN
vFinance Investments, Inc.128,100  5  1      734,358  4  3      3,982,255  4  3 
DOMS
Domestic Securities, Inc.91,095  6  <1      217,758  6  <1      954,603  8  <1 
PUMA
Puma Capital, Llc5,000  7  <1 -      10,000  12  <1 
CSTI
CANACCORD GENUITY SECURITIES2,550  8  <1 -      2,550  14  <1 


GCKO -
Page of 1
  September 2010   August 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 35,615,547 

NITE
Knight Capital Americas LLC16,875,686  1  47      6,327,544  1  55      69,524,330  1  44 
ETMM
G1 Execution Services, LLC13,803,353  2  38      3,040,558  2  26      64,464,299  2  41 
HDSN
RODMAN & RENSHAW, LLC1,897,916  3  5      968,004  3  8      5,256,387  5  3 
VFIN
vFinance Investments, Inc.1,381,052  4  3      128,100  5  1      5,363,307  4  3 
AUTO
Automated Trading Desk1,211,473  5  3      738,304  4  6      3,111,579  6  1 
VERT
The Vertical Trading Group200,000  6  <1 -      5,451,739  3  3 
DOMS
Domestic Securities, Inc.166,000  7  <1      91,095  6  <1      1,120,603  8  <1 
FANC
Finance 500, Inc.60,067  8  <1 -      75,067  11  <1 
STXG
Stockcross Financial Services20,000  9  <1 -      2,345,000  7  1 


GCKO -
Page of 1
  October 2010   September 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 10,888,811 

NITE
Knight Capital Americas LLC5,914,620  1  54      16,875,686  1  47      75,438,950  1  44 
ETMM
G1 Execution Services, LLC3,387,444  2  31      13,803,353  2  38      67,851,743  2  40 
HDSN
RODMAN & RENSHAW, LLC647,000  3  5      1,897,916  3  5      5,903,387  3  3 
AUTO
Automated Trading Desk383,000  4  3      1,211,473  5  3      3,494,579  6  2 
VFIN
vFinance Investments, Inc.258,997  5  2      1,381,052  4  3      5,622,304  4  3 
VERT
The Vertical Trading Group155,000  6  1      200,000  6  <1      5,606,739  5  3 
DOMS
Domestic Securities, Inc.127,750  7  1      166,000  7  <1      1,248,353  8  <1 
FANC
Finance 500, Inc.15,000  8  <1      60,067  8  <1      90,067  11  <1 


GOSY - GECKOSYSTEMS INTL CO
Page of 1
  November 2010   October 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 7,974,848 

ETMM
G1 Execution Services, LLC3,720,571  1  46      3,387,444  2  31      71,572,314  2  40 
NITE
Knight Capital Americas LLC2,967,187  2  37      5,914,620  1  54      78,406,137  1  44 
AUTO
Automated Trading Desk853,785  3  10      383,000  4  3      4,348,364  6  2 
VFIN
vFinance Investments, Inc.407,200  4  5      258,997  5  2      6,029,504  3  3 
HDSN
RODMAN & RENSHAW, LLC16,105  5  <1      647,000  3  5      5,919,492  4  3 
FANC
Finance 500, Inc.10,000  6  <1      15,000  8  <1      100,067  10  <1 


GOSY - GECKOSYSTEMS INTL CO
Page of 1
  December 2010   November 2010   Year-to-Date  
  Volume  Rank  %   Volume  Rank  %   Volume  Rank  %  

Total Share Volume 16,897,152 

NITE
Knight Capital Americas LLC8,604,292  1  50      2,967,187  2  37      87,010,429  1  45 
ETMM
G1 Execution Services, LLC5,033,054  2  29      3,720,571  1  46      76,605,368  2  39 
HDSN
RODMAN & RENSHAW, LLC1,794,406  3  10      16,105  5  <1      7,713,898  3  3 
STXG
Stockcross Financial Services850,000  4  5 -      3,195,000  7  1 
AUTO
Automated Trading Desk360,000  5  2      853,785  3  10      4,708,364  6  2 
VFIN
vFinance Investments, Inc.243,500  6  1      407,200  4  5      6,273,004  4  3 
DOMS
Domestic Securities, Inc.11,900  7  <1 -      1,260,253  8  <1