VIX FUTURES - CBOE FUTURES EXCHANGE                                                                     Code-1170E1
Commitments of Traders - Futures Only, September 6, 2005               
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     :   Total  :                        Reportable Positions                                :   Nonreportable
     :----------------------------------------------------------------------------------------     Positions
     :   Open   :           Non-Commercial       :     Commercial      :       Total         :
     : Interest :   Long   :  Short   : Spreading:   Long   :  Short   :   Long   :  Short   :   Long   :  Short
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     :          : ($100 X VBI)                                                               :
     :          :                                                                            :
All  :     9,316:     4,698      2,261        541      2,607      6,059      7,846      8,861:     1,470        455
Old  :     9,316:     4,698      2,261        541      2,607      6,059      7,846      8,861:     1,470        455
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: August 30, 2005                      :
     :        26:         3        -29         21        -36         35        -12         27:        38         -1
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      50.4       24.3        5.8       28.0       65.0       84.2       95.1:      15.8        4.9
Old  :     100.0:      50.4       24.3        5.8       28.0       65.0       84.2       95.1:      15.8        4.9
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  :        39:        18          3         11          6          6         34         19:
Old  :        39:        18          3         11          6          6         34         19:
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  :                 53.9       79.8       67.6       89.5       50.4       68.6       58.9       77.9
Old  :                 53.9       79.8       67.6       89.5       50.4       68.6       58.9       77.9
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated September 9, 2005