SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders with Delta-adjusted Options and Futures Combined, 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 ALLOWANCES)                        :
     :          :                                                                            :
All  :    37,748:    10,231      2,632      4,767     22,634     30,178     37,632     37,577:       116        171
Old  :    37,748:    10,231      2,632      4,767     22,634     30,178     37,632     37,577:       116        171
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: April 15, 2008                       :
     :     2,094:        99       -422      1,166        843      1,325      2,108      2,069:       -13         26
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      27.1        7.0       12.6       60.0       79.9       99.7       99.5:       0.3        0.5
Old  :     100.0:      27.1        7.0       12.6       60.0       79.9       99.7       99.5:       0.3        0.5
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         12         14         14         31         27:
Old  :        32:        10          8         12         14         14         31         27:
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  :                 57.5       69.7       79.6       83.6       33.9       31.8       39.8       37.5
Old  :                 57.5       69.7       79.6       83.6       33.9       31.8       39.8       37.5
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated April 25, 2008