VIX FUTURES - CBOE FUTURES EXCHANGE                                                                     Code-1170E1
Commitments of Traders - Futures Only, September 12, 2006              
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     :   Total  :                        Reportable Positions                                :   Nonreportable
     :----------------------------------------------------------------------------------------     Positions
     :   Open   :           Non-Commercial       :     Commercial      :       Total         :
     : Interest :   Long   :  Short   : Spreading:   Long   :  Short   :   Long   :  Short   :   Long   :  Short
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     :          : ($100 X VBI)                                                               :
     :          :                                                                            :
All  :    46,956:     3,126      9,153      1,090     37,763     35,305     41,979     45,548:     4,977      1,408
Old  :    46,956:     3,126      9,153      1,090     37,763     35,305     41,979     45,548:     4,977      1,408
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: September 5, 2006                    :
     :     1,254:       -50       -372        126      1,536        885      1,612        639:      -358        615
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:       6.7       19.5        2.3       80.4       75.2       89.4       97.0:      10.6        3.0
Old  :     100.0:       6.7       19.5        2.3       80.4       75.2       89.4       97.0:      10.6        3.0
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  :        21:         6          4          3          9          4         17         10:
Old  :        21:         6          4          3          9          4         17         10:
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  :                 74.5       88.3       82.8       95.3       73.0       82.1       78.9       88.3
Old  :                 74.5       88.3       82.8       95.3       73.0       82.1       78.9       88.3
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated September 15, 2006