SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE                                          Code-006261
Commitments of Traders with Delta-adjusted Options and Futures Combined, 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 ALLOWANCES)                        :
     :          :                                                                            :
All  :    37,800:    10,707      4,100      3,058     23,955     30,596     37,720     37,753:        80         47
Old  :    37,800:    10,707      4,100      3,058     23,955     30,596     37,720     37,753:        80         47
Other:         0:         0          0          0          0          0          0          0:         0          0
     :          :                                                                            :
     :          :          Changes in Commitments from: April 29, 2008                       :
     :      -871:        45        813     -1,409      1,002        297       -362       -299:      -508       -572
     :          :                                                                            :
     :          :    Percent of Open Interest Represented by Each Category of Trader         :
All  :     100.0:      28.3       10.8        8.1       63.4       80.9       99.8       99.9:       0.2        0.1
Old  :     100.0:      28.3       10.8        8.1       63.4       80.9       99.8       99.9:       0.2        0.1
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  :        33:        11          8         12         14         14         31         28:
Old  :        33:        11          8         12         14         14         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  :                 60.2       73.4       82.1       88.4       34.7       37.0       41.5       41.5
Old  :                 60.2       73.4       82.1       88.4       34.7       37.0       41.5       41.5
Other:                  0.0        0.0        0.0        0.0        0.0        0.0        0.0        0.0
 
 

Updated May 9, 2008