SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders with Delta-adjusted Options and Futures Combined, April 8, 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 ALLOWANCES)                        :
     :          :                                                                            :
All  :    36,124:    10,204      2,963      3,696     22,004     29,161     35,904     35,820:       220        304
Old  :    36,124:    10,204      2,963      3,696     22,004     29,161     35,904     35,820:       220        304
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: April 1, 2008                        :
     :       742:       279         32        283         38        186        600        501:       142        241
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      28.2        8.2       10.2       60.9       80.7       99.4       99.2:       0.6        0.8
Old  :     100.0:      28.2        8.2       10.2       60.9       80.7       99.4       99.2:       0.6        0.8
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          9         14         13         13         31         28:
Old  :        32:        10          9         14         13         13         31         28:
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  :                 59.7       74.2       80.8       85.1       32.4       33.8       39.6       38.5
Old  :                 59.7       74.2       80.8       85.1       32.4       33.8       39.6       38.5
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated April 11,2008