VIX FUTURES - CBOE FUTURES EXCHANGE                                                                     Code-1170E1
Commitments of Traders - Futures Only, December 11, 2007               
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     :   Total  :                        Reportable Positions                                :   Nonreportable
     :----------------------------------------------------------------------------------------     Positions
     :   Open   :           Non-Commercial       :     Commercial      :       Total         :
     : Interest :   Long   :  Short   : Spreading:   Long   :  Short   :   Long   :  Short   :   Long   :  Short
-------------------------------------------------------------------------------------------------------------------
     :          : ($1000 X INDEX)                                                            :
     :          :                                                                            :
All  :    62,050:     5,970     18,018      5,068     41,792     31,379     52,830     54,465:     9,220      7,585
Old  :    62,050:     5,970     18,018      5,068     41,792     31,379     52,830     54,465:     9,220      7,585
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: December 4, 2007                     :
     :     2,361:      -178     -2,211       -286       -567      1,623     -1,031       -874:     3,392      3,235
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:       9.6       29.0        8.2       67.4       50.6       85.1       87.8:      14.9       12.2
Old  :     100.0:       9.6       29.0        8.2       67.4       50.6       85.1       87.8:      14.9       12.2
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  :        26:         6          8          6          9          5         21         15:
Old  :        26:         6          8          6          9          5         21         15:
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  :                 73.0       70.6       79.1       84.7       52.2       54.0       55.4       60.0
Old  :                 73.0       70.6       79.1       84.7       52.2       54.0       55.4       60.0
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 


Updated December 14, 2007