SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders with Delta-adjusted Options and Futures Combined, December 11, 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  :    23,955:     8,413      5,534      3,096     11,939     15,123     23,448     23,754:       507        201
Old  :    23,955:     8,413      5,534      3,096     11,939     15,123     23,448     23,754:       507        201
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: December 4, 2007                     :
     :       214:       878       -720        507     -1,663        274       -279         61:       493        153
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      35.1       23.1       12.9       49.8       63.1       97.9       99.2:       2.1        0.8
Old  :     100.0:      35.1       23.1       12.9       49.8       63.1       97.9       99.2:       2.1        0.8
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  :        35:        11         12         14         11         12         28         32:
Old  :        35:        11         12         14         11         12         28         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  :                 53.3       56.1       77.4       75.7       43.6       37.4       52.8       46.3
Old  :                 53.3       56.1       77.4       75.7       43.6       37.4       52.8       46.3
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated December 14, 2007