SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders with Delta-adjusted Options and Futures Combined, 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 ALLOWANCES)                        :
     :          :                                                                            :
All  :    13,347:     3,919      1,475      1,895      6,884      9,352     12,698     12,722:       649        625
Old  :    13,347:     3,919      1,475      1,895      6,884      9,352     12,698     12,722:       649        625
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: December 24, 2007                    :
     :      -214:       215       -864        518     -1,478       -389       -746       -736:       532        522
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      29.4       11.0       14.2       51.6       70.1       95.1       95.3:       4.9        4.7
Old  :     100.0:      29.4       11.0       14.2       51.6       70.1       95.1       95.3:       4.9        4.7
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  :        31:        11          9         13         10         11         26         28:
Old  :        31:        11          9         13         10         11         26         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  :                 53.8       55.4       80.0       75.5       36.4       30.9       44.8       42.9
Old  :                 53.8       55.4       80.0       75.5       36.4       30.9       44.8       42.9
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated January 4, 2008