SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders - Futures Only, August 28, 2007                 
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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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     :          : (CONTRACTS OF 25 U.S. EPA SO2 EMMISSION ALLOWANCES)                        :
     :          :                                                                            :
All  :    17,621:     5,147      2,560        907     11,469     14,054     17,523     17,521:        98        100
Old  :    17,621:     5,147      2,560        907     11,469     14,054     17,523     17,521:        98        100
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: August 21, 2007                      :
     :       422:        65        747         -3        490       -237        552        507:      -130        -85
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      29.2       14.5        5.1       65.1       79.8       99.4       99.4:       0.6        0.6
Old  :     100.0:      29.2       14.5        5.1       65.1       79.8       99.4       99.4:       0.6        0.6
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  :        32:        10         10          8         10         11         23         27:
Old  :        32:        10         10          8         10         11         23         27:
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  :                 66.2       69.9       86.0       82.3       45.0       40.5       53.9       49.1
Old  :                 66.2       69.9       86.0       82.3       45.0       40.5       53.9       49.1
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated August 31, 2007