SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders with Delta-adjusted Options and Futures Combined, August 28, 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  :    22,313:     4,149      2,680      2,731     15,202     16,678     22,082     22,089:       232        224
Old  :    22,313:     4,149      2,680      2,731     15,202     16,678     22,082     22,089:       232        224
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: August 21, 2007                      :
     :     1,276:      -286        964        319      1,316         28      1,350      1,311:       -73        -35
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      18.6       12.0       12.2       68.1       74.7       99.0       99.0:       1.0        1.0
Old  :     100.0:      18.6       12.0       12.2       68.1       74.7       99.0       99.0:       1.0        1.0
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:         9         12         10         12         12         26         29:
Old  :        33:         9         12         10         12         12         26         29:
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  :                 64.4       67.0       82.5       81.0       35.8       32.6       40.1       38.3
Old  :                 64.4       67.0       82.5       81.0       35.8       32.6       40.1       38.3
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated August 31, 2007