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SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/07/09          |
--------------------------------------------------------------| 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:       23,335
COMMITMENTS
  16,747      284      766    5,664   22,163   23,177   23,213      158      122

CHANGES FROM 03/31/09 (CHANGE IN OPEN INTEREST:     -1,596)
     119      -29     -100   -1,551   -1,428   -1,533   -1,558      -63      -38

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    71.8      1.2      3.3     24.3     95.0     99.3     99.5      0.7      0.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       34)
       9        4        6       14       17       25       25
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/07/09          |
--------------------------------------------------------------| 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:        6,282
COMMITMENTS
   3,341    2,423    2,426      129    1,342    5,896    6,191      387       91

CHANGES FROM 03/31/09 (CHANGE IN OPEN INTEREST:     -3,913)
  -2,775      797   -1,087        0   -3,628   -3,862   -3,918      -51        5

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    53.2     38.6     38.6      2.1     21.4     93.8     98.5      6.2      1.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
      20        7       11        2        4       27       17
 
 
RGGI CO2 ALLOWANCE - CHICAGO CLIMATE FUTURES EXCHANGE                Code-00626U
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/07/09          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:       13,231
COMMITMENTS
   1,457    4,416      774   10,109    7,143   12,339   12,333      891      898

CHANGES FROM 03/31/09 (CHANGE IN OPEN INTEREST:        462)
     395      852     -739      -24     -503     -368     -389      830      852

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    11.0     33.4      5.8     76.4     54.0     93.3     93.2      6.7      6.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       4        4        6       17       15       25       21
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Updated April 10, 2009