VIX FUTURES - CBOE FUTURES EXCHANGE                                                                           
Commitments of Traders with Delta-adjusted Options and Futures Combined, July 26, 2005                   
-------------------------------------------------------------------------------------------------------------------
     :   Total  :                        Reportable Positions                                :   Nonreportable
     :----------------------------------------------------------------------------------------     Positions
     :   Open   :           Non-Commercial       :     Commercial      :       Total         :
     : Interest :   Long   :  Short   : Spreading:   Long   :  Short   :   Long   :  Short   :   Long   :  Short
-------------------------------------------------------------------------------------------------------------------
     :          : ($100 X VBI)                                                               :
     :          :                                                                            :
All  :    11,177:     5,094      2,432        624      2,767      7,692      8,485     10,748:     2,692        429
Old  :    11,177:     5,094      2,432        624      2,767      7,692      8,485     10,748:     2,692        429
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: July 19, 2005                        :
     :      -745:       162          0         30        182        210        374        240:    -1,119       -985
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      45.6       21.8        5.6       24.8       68.8       75.9       96.2:      24.1        3.8
Old  :     100.0:      45.6       21.8        5.6       24.8       68.8       75.9       96.2:      24.1        3.8
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  :        42:        23          2         11          6          6         38         18:
Old  :        42:        23          2         11          6          6         38         18:
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  :                 48.6       82.3       58.2       91.9       45.1       73.4       51.7       81.8
Old  :                 48.6       82.3       58.2       91.9       45.1       73.4       51.7       81.8
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated July 29, 2005