SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders - Futures Only, May 6, 2008                     
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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  :    24,921:    10,562      4,285        328     13,957     20,269     24,847     24,882:        74         39
Old  :    24,921:    10,562      4,285        328     13,957     20,269     24,847     24,882:        74         39
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: April 29, 2008                       :
     :    -1,351:         1        706     -1,279        158       -483     -1,120     -1,056:      -231       -295
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      42.4       17.2        1.3       56.0       81.3       99.7       99.8:       0.3        0.2
Old  :     100.0:      42.4       17.2        1.3       56.0       81.3       99.7       99.8:       0.3        0.2
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  :        32:        10          8          6         13         13         26         24:
Old  :        32:        10          8          6         13         13         26         24:
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  :                 69.9       76.2       88.6       90.6       56.3       59.4       66.7       66.3
Old  :                 69.9       76.2       88.6       90.6       56.3       59.4       66.7       66.3
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated May 9, 2008