```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 05/04/10                         |
--------------------------------------------------------------| 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:       18,068
COMMITMENTS
  12,313      340        0    5,749   17,728   18,062   18,068        6        0

CHANGES FROM 04/27/10 (CHANGE IN OPEN INTEREST:       -164)
     -25       27        0     -137     -191     -162     -164       -2        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    68.1      1.9      0.0     31.8     98.1    100.0    100.0      0.0      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       5        2        0        8       14       13       16
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
FUTURES ONLY POSITIONS AS OF 05/04/10                         |
--------------------------------------------------------------| 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:       25,153
COMMITMENTS
  20,574    6,879        0    4,488   18,250   25,062   25,129       91       24

CHANGES FROM 04/27/10 (CHANGE IN OPEN INTEREST:       -512)
     227     -250      -58     -681     -195     -512     -503        0       -9

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    81.8     27.3      0.0     17.8     72.6     99.6     99.9      0.4      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       8        1        0       11       10       19       11
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 05/04/10                         |
--------------------------------------------------------------| 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:        2,557
COMMITMENTS
   2,325      582        0       51    1,953    2,376    2,535      181       22

CHANGES FROM 04/27/10 (CHANGE IN OPEN INTEREST:         10)
       0       -1        0        0        0        0       -1       10       11

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    90.9     22.8      0.0      2.0     76.4     92.9     99.1      7.1      0.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
      19        2        0        1        2       20        4
```

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Updated May 7, 2010