```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/20/10          |
--------------------------------------------------------------| 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:       19,020
COMMITMENTS
  12,478      411       33    6,486   18,531   18,997   18,975       23       45

CHANGES FROM 04/13/10 (CHANGE IN OPEN INTEREST:        794)
      89      -20      -31      764      822      822      771      -28       23

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    65.6      2.2      0.2     34.1     97.4     99.9     99.8      0.1      0.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       6        3        1        9       13       15       17
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/20/10          |
--------------------------------------------------------------| 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:       30,681
COMMITMENTS
  22,265    7,133      373    7,925   23,135   30,563   30,641      118       40

CHANGES FROM 04/13/10 (CHANGE IN OPEN INTEREST:      5,319)
   1,551      239      198    3,535    4,865    5,283    5,302       36       17

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    72.6     23.3      1.2     25.8     75.4     99.6     99.9      0.4      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       8        4        3       16       16       26       21
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/20/10          |
--------------------------------------------------------------| 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:        3,997
COMMITMENTS
   2,708      459      997       54    2,482    3,759    3,938      239       59

CHANGES FROM 04/13/10 (CHANGE IN OPEN INTEREST:         31)
      40       -4        1       -0       33       41       30      -11        1

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    67.7     11.5     24.9      1.4     62.1     94.0     98.5      6.0      1.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
      20        2        7        2        2       24        9
```

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Updated April 28, 2010