SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders - Futures Only, December 31, 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                                    :
     :          :                                                                            :
All  :     9,392:     3,731      1,432        161      4,851      7,174      8,743      8,767:       649        625
Old  :     9,392:     3,731      1,432        161      4,851      7,174      8,743      8,767:       649        625
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: December 24, 2007                    :
     :        83:       789       -204          1     -1,239       -236       -449       -439:       532        522
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      39.7       15.2        1.7       51.7       76.4       93.1       93.3:       6.9        6.7
Old  :     100.0:      39.7       15.2        1.7       51.7       76.4       93.1       93.3:       6.9        6.7
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  :        30:         9         10          6          9         10         21         23:
Old  :        30:         9         10          6          9         10         21         23:
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  :                 56.3       61.4       84.7       82.6       47.2       43.2       60.4       55.3
Old  :                 56.3       61.4       84.7       82.6       47.2       43.2       60.4       55.3
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated January 4, 2008