```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/27/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 25 U.S. EPA SO2 EMMISSION              OPEN INTEREST:       18,803
COMMITMENTS
  12,374      313       24    6,396   18,466   18,795   18,803        8        0

CHANGES FROM 04/20/10 (CHANGE IN OPEN INTEREST:       -217)
    -103      -98       -9      -90      -65     -202     -172      -15      -45

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    65.8      1.7      0.1     34.0     98.2    100.0    100.0      0.0      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       5        2        1       10       15       15       18
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/27/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 25 U.S. EPA SO2 EMMISSION              OPEN INTEREST:       33,694
COMMITMENTS
  22,967    7,326      414   10,223   25,921   33,603   33,661       91       33

CHANGES FROM 04/20/10 (CHANGE IN OPEN INTEREST:      3,013)
     701      193       41    2,298    2,786    3,040    3,020      -27       -7

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    68.2     21.7      1.2     30.3     76.9     99.7     99.9      0.3      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       8        3        2       16       15       25       19
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/27/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 METRIC TONS CCX C02)             OPEN INTEREST:        3,986
COMMITMENTS
   2,697      450      997       54    2,470    3,748    3,917      238       69

CHANGES FROM 04/20/10 (CHANGE IN OPEN INTEREST:        -11)
     -11       -9        1        0      -12      -10      -21       -1       10

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    67.7     11.3     25.0      1.4     62.0     94.0     98.3      6.0      1.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
      20        2        7        2        2       24        9
```

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Updated April 30, 2010