SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders with Delta-adjusted Options and Futures Combined, May 22, 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  :    18,139:     3,703      1,129        638     13,379     16,027     17,720     17,794:       419        345
Old  :    18,139:     3,703      1,129        638     13,379     16,027     17,720     17,794:       419        345
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: May 15, 2007                         :
     :     1,139:       348       -132        330        415      1,688      1,094      1,887:        45       -748
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      20.4        6.2        3.5       73.8       88.4       97.7       98.1:       2.3        1.9
Old  :     100.0:      20.4        6.2        3.5       73.8       88.4       97.7       98.1:       2.3        1.9
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  :        30:        12          7          6         11         10         26         20:
Old  :        30:        12          7          6         11         10         26         20:
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  :                 78.1       80.8       88.0       90.6       45.3       45.0       49.1       49.8
Old  :                 78.1       80.8       88.0       90.6       45.3       45.0       49.1       49.8
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated May 25, 2007