SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 03/31/09                         |
--------------------------------------------------------------| 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:       23,998
COMMITMENTS
  16,236      482      671    6,870   22,685   23,777   23,838      221      160

CHANGES FROM 03/24/09 (CHANGE IN OPEN INTEREST:      1,183)
     214       12      -64      873    1,081    1,023    1,029      160      154

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    67.7      2.0      2.8     28.6     94.5     99.1     99.3      0.9      0.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       33)
       8        5        6       16       15       26       24
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 03/31/09                         |
--------------------------------------------------------------| 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:        6,876
COMMITMENTS
   4,374    1,420    2,107      129    3,331    6,610    6,858      266       18

CHANGES FROM 03/24/09 (CHANGE IN OPEN INTEREST:        765)
     352      -76      382       10      490      744      796       21      -31

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    63.6     20.7     30.6      1.9     48.4     96.1     99.7      3.9      0.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
      22        4        4        2        4       24       12
 
 
RGGI CO2 ALLOWANCE - CHICAGO CLIMATE FUTURES EXCHANGE                Code-00626U
FUTURES ONLY POSITIONS AS OF 03/31/09                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:        9,132
COMMITMENTS
     933    3,457      941    7,201    4,693    9,075    9,091       57       41

CHANGES FROM 03/24/09 (CHANGE IN OPEN INTEREST:      2,063)
      48    1,234      347    1,668      494    2,063    2,075        0      -12

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    10.2     37.9     10.3     78.9     51.4     99.4     99.6      0.6      0.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       25)
       5        4        4       12        8       20       13
 

Updated April 3, 2009