SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 04/21/09                         |
--------------------------------------------------------------| 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:       25,017
COMMITMENTS
  16,372      441      705    7,880   23,862   24,957   25,008       60        9

CHANGES FROM 04/14/09 (CHANGE IN OPEN INTEREST:        649)
    -117      -30       22      874      798      779      790     -130     -141

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    65.4      1.8      2.8     31.5     95.4     99.8    100.0      0.2      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       34)
       8        5        5       14       15       25       22
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 04/21/09                         |
--------------------------------------------------------------| 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:        3,600
COMMITMENTS
   2,260    2,408      961      129      214    3,350    3,583      250       17

CHANGES FROM 04/14/09 (CHANGE IN OPEN INTEREST:         -6)
      43      -62      -50        0      106       -7       -6        1        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    62.8     66.9     26.7      3.6      5.9     93.1     99.5      6.9      0.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
      20        4        3        2        2       24        8
 
 
NITROGEN FIN INS ANNUAL 2009 - CHICAGO CLIMATE FUTURES EXCHANGE      Code-00626F
FUTURES ONLY POSITIONS AS OF 04/21/09                         |
--------------------------------------------------------------| 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:       23,046
COMMITMENTS
   2,499      145        0   20,537   22,901   23,036   23,046       10        0

CHANGES FROM 04/14/09 (CHANGE IN OPEN INTEREST:      1,775)
     625      -50        0    1,150    1,825    1,775    1,775        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    10.8      0.6      0.0     89.1     99.4    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 04/21/09                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:       11,948
COMMITMENTS
   1,550    4,305      889    9,391    6,647   11,830   11,841      118      107

CHANGES FROM 04/14/09 (CHANGE IN OPEN INTEREST:        577)
      64      220      137      689      545      890      902     -313     -325

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    13.0     36.0      7.4     78.6     55.6     99.0     99.1      1.0      0.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       5        4        3       12       11       19       16
 

Updated April 23, 2009