SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 05/05/09                         |
--------------------------------------------------------------| 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:       24,189
COMMITMENTS
  16,458      270      802    6,780   23,028   24,040   24,100      149       89

CHANGES FROM 04/28/09 (CHANGE IN OPEN INTEREST:     -1,364)
     -29      -66      120   -1,552   -1,472   -1,461   -1,418       97       54

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    68.0      1.1      3.3     28.0     95.2     99.4     99.6      0.6      0.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       7        2        4       15       15       23       20
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 05/05/09                         |
--------------------------------------------------------------| 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:        3,255
COMMITMENTS
   2,274    2,550      645       65       44    2,984    3,239      271       16

CHANGES FROM 04/28/09 (CHANGE IN OPEN INTEREST:       -342)
       4      142     -288      -49     -195     -333     -341       -9       -1

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    69.9     78.3     19.8      2.0      1.4     91.7     99.5      8.3      0.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
      18        3        4        2        1       22        7
 
 
NITROGEN FIN INS ANNUAL 2009 - CHICAGO CLIMATE FUTURES EXCHANGE      Code-00626F
FUTURES ONLY POSITIONS AS OF 05/05/09                         |
--------------------------------------------------------------| 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:       21,323
COMMITMENTS
   2,124      560        0   19,199   20,763   21,323   21,323        0        0

CHANGES FROM 04/28/09 (CHANGE IN OPEN INTEREST:     -2,653)
    -325       50        0   -2,272   -2,647   -2,597   -2,597      -56      -56

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    10.0      2.6      0.0     90.0     97.4    100.0    100.0      0.0      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
       1        2        0       13       12       14       14
 
 
RGGI CO2 ALLOWANCE - CHICAGO CLIMATE FUTURES EXCHANGE                Code-00626U
FUTURES ONLY POSITIONS AS OF 05/05/09                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:       10,540
COMMITMENTS
   2,341    3,266      272    7,800    6,900   10,413   10,438      127      102

CHANGES FROM 04/28/09 (CHANGE IN OPEN INTEREST:     -2,034)
   1,244   -1,570     -722   -2,639      217   -2,117   -2,075       83       41

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    22.2     31.0      2.6     74.0     65.5     98.8     99.0      1.2      1.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       5        3        3       13       11       21       15
 

Updated May 08, 2009