SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders - Futures Only, April 22, 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  :    25,761:    10,118      3,071      1,806     13,725     20,718     25,649     25,595:       112        166
Old  :    25,761:    10,118      3,071      1,806     13,725     20,718     25,649     25,595:       112        166
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: April 15, 2008                       :
     :     2,102:       117       -586      1,179        823      1,483      2,119      2,076:       -17         26
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      39.3       11.9        7.0       53.3       80.4       99.6       99.4:       0.4        0.6
Old  :     100.0:      39.3       11.9        7.0       53.3       80.4       99.6       99.4:       0.4        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  :        31:         8          9          7         12         13         24         25:
Old  :        31:         8          9          7         12         13         24         25:
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  :                 66.3       71.5       85.9       85.7       53.3       50.7       62.6       58.9
Old  :                 66.3       71.5       85.9       85.7       53.3       50.7       62.6       58.9
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated April 25, 2008