VIX FUTURES - CBOE FUTURES EXCHANGE                                                                           
Commitments of Traders - Futures Only, May 31, 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  :    10,969:     6,659      1,554        218      1,915      8,858      8,792     10,630:     2,177        339
Old  :    10,969:     6,659      1,554        218      1,915      8,858      8,792     10,630:     2,177        339
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: May 24, 2005                         :
     :      -124:       443        462        -25        -15         37        403        474:      -527       -598
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      60.7       14.2        2.0       17.5       80.8       80.2       96.9:      19.8        3.1
Old  :     100.0:      60.7       14.2        2.0       17.5       80.8       80.2       96.9:      19.8        3.1
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  :        36:        23          2          4          7          5         34          9:
Old  :        36:        23          2          4          7          5         34          9:
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  :                 48.3       87.0       63.3       96.6       48.3       84.1       63.3       91.6
Old  :                 48.3       87.0       63.3       96.6       48.3       84.1       63.3       91.6
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated June 3, 2005