SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders - Futures Only, September 18, 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  :    16,932:     5,338      2,705        643     10,866     13,506     16,847     16,854:        85         78
Old  :    16,932:     5,338      2,705        643     10,866     13,506     16,847     16,854:        85         78
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: September 11, 2007                   :
     :       574:       771        386        -28       -221        178        522        536:        52         38
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      31.5       16.0        3.8       64.2       79.8       99.5       99.5:       0.5        0.5
Old  :     100.0:      31.5       16.0        3.8       64.2       79.8       99.5       99.5:       0.5        0.5
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  :        33:        12         10          7          9         10         23         25:
Old  :        33:        12         10          7          9         10         23         25:
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  :                 72.2       70.0       87.4       83.1       48.1       41.3       56.9       51.1
Old  :                 72.2       70.0       87.4       83.1       48.1       41.3       56.9       51.1
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated September 21, 2007