```
VIX FUTURES - CBOE FUTURES EXCHANGE                                                                     Code-1170E1
Commitments of Traders with Delta-adjusted Options and Futures Combined, December 20, 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  :   156,992:    16,477     23,622     35,099     89,659     83,909    141,235    142,630:    15,757     14,362
Old  :   156,992:    16,477     23,622     35,099     89,659     83,909    141,235    142,630:    15,757     14,362
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: December 13, 2011                    :
     :     6,562:     2,181      1,072      1,295      4,656      4,289      8,132      6,656:    -1,570        -94
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      10.5       15.0       22.4       57.1       53.4       90.0       90.9:      10.0        9.1
Old  :     100.0:      10.5       15.0       22.4       57.1       53.4       90.0       90.9:      10.0        9.1
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  :        79:        29         21         29         24         23         67         62:
Old  :        79:        29         21         29         24         23         67         62:
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  :                 36.2       37.5       50.4       53.2       23.5       21.9       27.7       28.7
Old  :                 36.2       37.5       50.4       53.2       23.5       21.9       27.7       28.7
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
```

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Updated December 23, 2011