VIX FUTURES - CBOE FUTURES EXCHANGE                                                                     Code-1170E1
Commitments of Traders with Delta-adjusted Options and Futures Combined, February 21, 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  :    18,540:     2,048      5,158        238     15,172     12,880     17,458     18,276:     1,082        264
Old  :    18,540:     2,048      5,158        238     15,172     12,880     17,458     18,276:     1,082        264
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: February 14, 2006                    :
     :    -7,224:       -30        871       -312     -3,889     -4,846     -4,231     -4,287:    -2,993     -2,937
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      11.0       27.8        1.3       81.8       69.5       94.2       98.6:       5.8        1.4
Old  :     100.0:      11.0       27.8        1.3       81.8       69.5       94.2       98.6:       5.8        1.4
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  :        34:        16          5          6          7          4         28         14:
Old  :        34:        16          5          6          7          4         28         14:
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  :                 78.7       93.2       85.4       97.4       63.5       75.8       67.8       77.7
Old  :                 78.7       93.2       85.4       97.4       63.5       75.8       67.8       77.7
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated February 24, 2006