```
VIX FUTURES - CBOE FUTURES EXCHANGE                                                                     Code-1170E1
Commitments of Traders - Futures Only, August 16, 2011                 
-------------------------------------------------------------------------------------------------------------------
     :   Total  :                        Reportable Positions                                :   Nonreportable
     :----------------------------------------------------------------------------------------     Positions
     :   Open   :           Non-Commercial       :     Commercial      :       Total         :
     : Interest :   Long   :  Short   : Spreading:   Long   :  Short   :   Long   :  Short   :   Long   :  Short
-------------------------------------------------------------------------------------------------------------------
     :          : ($1000 X INDEX)                                                            :
     :          :                                                                            :
All  :   199,173:    26,095     26,926     58,248     91,513     91,657    175,856    176,831:    23,317     22,342
Old  :   199,173:    26,095     26,926     58,248     91,513     91,657    175,856    176,831:    23,317     22,342
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: August 9, 2011                       :
     :       118:     1,294      1,782      7,443    -10,802     -8,731     -2,065        494:     2,183       -376
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      13.1       13.5       29.2       45.9       46.0       88.3       88.8:      11.7       11.2
Old  :     100.0:      13.1       13.5       29.2       45.9       46.0       88.3       88.8:      11.7       11.2
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  :       111:        38         20         59         30         30        103         96:
Old  :       111:        38         20         59         30         30        103         96:
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  :                 25.1       36.7       37.3       45.7       16.0       22.1       21.5       27.5
Old  :                 25.1       36.7       37.3       45.7       16.0       22.1       21.5       27.5
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
```

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Updated August 19, 2011