```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 05/11/10                         |
--------------------------------------------------------------| 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:       17,550
COMMITMENTS
  12,316      348        0    5,212   17,190   17,528   17,538       22       12

CHANGES FROM 05/04/10 (CHANGE IN OPEN INTEREST:       -518)
       3        8        0     -537     -538     -534     -530       16       12

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    70.2      2.0      0.0     29.7     97.9     99.9     99.9      0.1      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       4        2        0        9       14       13       16
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
FUTURES ONLY POSITIONS AS OF 05/11/10                         |
--------------------------------------------------------------| 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:       25,509
COMMITMENTS
  20,659    6,864        0    4,770   18,638   25,429   25,502       80        7

CHANGES FROM 05/04/10 (CHANGE IN OPEN INTEREST:        356)
      85      -15        0      282      388      367      373      -11      -17

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    81.0     26.9      0.0     18.7     73.1     99.7    100.0      0.3      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       8        1        0       12       11       20       12
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 05/11/10                         |
--------------------------------------------------------------| 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:        2,536
COMMITMENTS
   2,353      582        0       30    1,953    2,383    2,535      153        1

CHANGES FROM 05/04/10 (CHANGE IN OPEN INTEREST:        -21)
      28        0        0      -21        0        7        0      -28      -21

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    92.8     22.9      0.0      1.2     77.0     94.0    100.0      6.0      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
      19        2        0        1        2       20        4
```

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Updated May 14, 2010