SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders - Futures Only, August 14, 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  :    16,451:     4,625      1,376        923     10,796     14,057     16,344     16,356:       107         95
Old  :    16,451:     4,625      1,376        923     10,796     14,057     16,344     16,356:       107         95
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: August 7, 2007                       :
     :       105:       249        477        236        -87       -105        398        608:      -293       -503
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      28.1        8.4        5.6       65.6       85.4       99.3       99.4:       0.7        0.6
Old  :     100.0:      28.1        8.4        5.6       65.6       85.4       99.3       99.4:       0.7        0.6
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  :        29:        11          8          7          7         10         21         22:
Old  :        29:        11          8          7          7         10         21         22:
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  :                 72.3       73.0       87.4       84.6       47.7       43.4       55.8       53.4
Old  :                 72.3       73.0       87.4       84.6       47.7       43.4       55.8       53.4
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated August 17, 2007