SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders - Futures Only, October 16, 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  :    19,480:     6,234      2,946        712     12,427     15,615     19,373     19,273:       107        207
Old  :    19,480:     6,234      2,946        712     12,427     15,615     19,373     19,273:       107        207
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: October 9, 2007                      :
     :     1,089:      -353          6       -156      1,522      1,069      1,013        919:        76        170
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      32.0       15.1        3.7       63.8       80.2       99.5       98.9:       0.5        1.1
Old  :     100.0:      32.0       15.1        3.7       63.8       80.2       99.5       98.9:       0.5        1.1
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:        11         10          9          8         12         23         28:
Old  :        34:        11         10          9          8         12         23         28:
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  :                 62.9       66.4       85.2       79.7       39.2       31.5       48.8       41.6
Old  :                 62.9       66.4       85.2       79.7       39.2       31.5       48.8       41.6
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated October 19, 2007