SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders with Delta-adjusted Options and Futures Combined, October 23, 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  :    24,670:     6,788      4,623      2,276     15,316     17,480     24,380     24,379:       290        291
Old  :    24,670:     6,788      4,623      2,276     15,316     17,480     24,380     24,379:       290        291
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: October 16, 2007                     :
     :     2,786:       932      1,721        917        756         69      2,606      2,707:       180         79
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      27.5       18.7        9.2       62.1       70.9       98.8       98.8:       1.2        1.2
Old  :     100.0:      27.5       18.7        9.2       62.1       70.9       98.8       98.8:       1.2        1.2
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  :        37:        12         12         14         12         12         31         32:
Old  :        37:        12         12         14         12         12         31         32:
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  :                 58.8       65.4       81.5       79.1       33.2       29.7       41.2       37.1
Old  :                 58.8       65.4       81.5       79.1       33.2       29.7       41.2       37.1
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated October 26, 2007