VIX FUTURES - CBOE FUTURES EXCHANGE                                                                     Code-1170E1
Commitments of Traders with Delta-adjusted Options and Futures Combined, April 18, 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  :    28,107:     5,896      6,406        601     18,022     17,748     24,519     24,755:     3,588      3,352
Old  :    28,107:     5,896      6,406        601     18,022     17,748     24,519     24,755:     3,588      3,352
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: April 11, 2006                       :
     :      -137:       997       -512        334     -1,537       -103       -206       -281:        69        144
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      21.0       22.8        2.1       64.1       63.1       87.2       88.1:      12.8       11.9
Old  :     100.0:      21.0       22.8        2.1       64.1       63.1       87.2       88.1:      12.8       11.9
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  :        51:        19         10         17          8          4         44         26:
Old  :        51:        19         10         17          8          4         44         26:
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  :                 65.7       76.5       76.5       85.3       52.0       55.0       57.3       63.8
Old  :                 65.7       76.5       76.5       85.3       52.0       55.0       57.3       63.8
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated April 21, 2006