SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders with Delta-adjusted Options and Futures Combined, August 7, 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  :    21,114:     3,464      1,405      1,949     14,842     16,777     20,255     20,130:       859        984
Old  :    21,114:     3,464      1,405      1,949     14,842     16,777     20,255     20,130:       859        984
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: July 31, 2007                        :
     :     1,404:      -219     -1,221        438        583      1,373        802        590:       602        814
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      16.4        6.7        9.2       70.3       79.5       95.9       95.3:       4.1        4.7
Old  :     100.0:      16.4        6.7        9.2       70.3       79.5       95.9       95.3:       4.1        4.7
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  :        28:        11          7          9          8         10         23         22:
Old  :        28:        11          7          9          8         10         23         22:
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  :                 72.1       69.6       84.4       81.8       36.5       33.7       41.0       39.8
Old  :                 72.1       69.6       84.4       81.8       36.5       33.7       41.0       39.8
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated August 10, 2007