SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 04/14/09                         |
--------------------------------------------------------------| 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:       24,368
COMMITMENTS
  16,489      471      683    7,006   23,064   24,178   24,218      190      150

CHANGES FROM 04/07/09 (CHANGE IN OPEN INTEREST:      1,900)
     196      114       11    1,661    1,747    1,868    1,872       32       28

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    67.7      1.9      2.8     28.8     94.6     99.2     99.4      0.8      0.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       35)
       8        6        4       14       15       24       23
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 04/14/09                         |
--------------------------------------------------------------| 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:        3,606
COMMITMENTS
   2,217    2,470    1,011      129      108    3,357    3,589      249       17

CHANGES FROM 04/07/09 (CHANGE IN OPEN INTEREST:        -54)
     -54      -54        0        0        0      -54      -54        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    61.5     68.5     28.0      3.6      3.0     93.1     99.5      6.9      0.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
      19        6        3        2        2       24        9
 
 
NITROGEN FIN INS ANNUAL 2009 - CHICAGO CLIMATE FUTURES EXCHANGE      Code-00626F
FUTURES ONLY POSITIONS AS OF 04/14/09                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1 U.S. EPA CAIR ANNUAL EMM             OPEN INTEREST:       21,271
COMMITMENTS
   1,874      195        0   19,387   21,076   21,261   21,271       10        0

CHANGES FROM 04/07/09 (CHANGE IN OPEN INTEREST:          .)
       .        .        .        .        .        .        .        .        .

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     8.8      0.9      0.0     91.1     99.1    100.0    100.0      0.0      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       21)
       1        1        0       14       12       15       13
 
 
RGGI CO2 ALLOWANCE - CHICAGO CLIMATE FUTURES EXCHANGE                Code-00626U
FUTURES ONLY POSITIONS AS OF 04/14/09                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:       11,371
COMMITMENTS
   1,486    4,085      752    8,702    6,102   10,940   10,939      431      432

CHANGES FROM 04/07/09 (CHANGE IN OPEN INTEREST:      1,628)
      20     -245      531    1,533    1,802    2,084    2,088     -456     -460

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    13.1     35.9      6.6     76.5     53.7     96.2     96.2      3.8      3.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       4        3        4       12       11       19       16
 

Updated April 17, 2009