SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders - Futures Only, December 4, 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  :    18,443:     7,840      4,999        602      9,987     12,794     18,429     18,395:        14         48
Old  :    18,443:     7,840      4,999        602      9,987     12,794     18,429     18,395:        14         48
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: November 27, 2007                    :
     :    -2,240:    -1,007      1,828     -1,268         35     -2,822     -2,240     -2,262:         0         22
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      42.5       27.1        3.3       54.2       69.4       99.9       99.7:       0.1        0.3
Old  :     100.0:      42.5       27.1        3.3       54.2       69.4       99.9       99.7:       0.1        0.3
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:        11         10          8          7         10         21         25:
Old  :        33:        11         10          8          7         10         21         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  :                 71.2       70.1       89.5       85.0       53.6       50.9       67.0       63.2
Old  :                 71.2       70.1       89.5       85.0       53.6       50.9       67.0       63.2
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated December 7, 2007