```
VIX FUTURES - CBOE FUTURES EXCHANGE                                                                     Code-1170E1
Commitments of Traders - Futures Only, May 31, 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  :   242,356:    31,558     49,510     50,663    136,401    123,983    218,622    224,156:    23,734     18,200
Old  :   242,356:    31,558     49,510     50,663    136,401    123,983    218,622    224,156:    23,734     18,200
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: May 24, 2011                         :
     :     6,721:     5,950      3,551      4,334     -5,034       -828      5,250      7,057:     1,471       -336
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      13.0       20.4       20.9       56.3       51.2       90.2       92.5:       9.8        7.5
Old  :     100.0:      13.0       20.4       20.9       56.3       51.2       90.2       92.5:       9.8        7.5
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  :       130:        45         36         63         28         28        115        105:
Old  :       130:        45         36         63         28         28        115        105:
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  :                 41.2       31.3       48.2       44.8       32.1       26.9       37.2       34.8
Old  :                 41.2       31.3       48.2       44.8       32.1       26.9       37.2       34.8
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
```

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Updated June 3, 2011