VIX FUTURES - CBOE FUTURES EXCHANGE                                                                     Code-1170E1
Commitments of Traders - Futures Only, July 24, 2007                   
-------------------------------------------------------------------------------------------------------------------
     :   Total  :                        Reportable Positions                                :   Nonreportable
     :----------------------------------------------------------------------------------------     Positions
     :   Open   :           Non-Commercial       :     Commercial      :       Total         :
     : Interest :   Long   :  Short   : Spreading:   Long   :  Short   :   Long   :  Short   :   Long   :  Short
-------------------------------------------------------------------------------------------------------------------
     :          : ($1000 X INDEX)                                                            :
     :          :                                                                            :
All  :    63,478:    12,508     14,123      5,973     35,586     35,559     54,067     55,655:     9,411      7,823
Old  :    63,478:    12,508     14,123      5,973     35,586     35,559     54,067     55,655:     9,411      7,823
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: July 17, 2007                        :
     :     2,405:     1,239       -712        100      2,669      4,658      4,008      4,046:    -1,603     -1,641
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      19.7       22.2        9.4       56.1       56.0       85.2       87.7:      14.8       12.3
Old  :     100.0:      19.7       22.2        9.4       56.1       56.0       85.2       87.7:      14.8       12.3
Other:     100.0:       0.0        0.0        0.0        0.0        0.0        0.0        0.0:       0.0        0.0
     :          :                                                                            :
     :# Traders :              Number of Traders in Each Category                            :
All  :        41:        17         12         10          9          9         33         24:
Old  :        41:        17         12         10          9          9         33         24:
Other:         0:         0          0          0          0          0          0          0:
     :----------------------------------------------------------------------------------------------------
     :             Percent of Open Interest Held by the Indicated Number of the Largest Traders
     :                          By Gross Position                       By Net Position
     :               4 or Less Traders     8 or Less Traders     4 or Less Traders     8 or Less Traders
     :                 Long:     Short       Long      Short:      Long      Short       Long      Short
     :----------------------------------------------------------------------------------------------------
All  :                 56.1       48.9       69.3       67.2       45.8       41.9       52.3       54.7
Old  :                 56.1       48.9       69.3       67.2       45.8       41.9       52.3       54.7
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 


Updated July 27, 2007