```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 04/13/10                         |
--------------------------------------------------------------| 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:       17,470
COMMITMENTS
  12,373      431        0    5,070   16,985   17,443   17,416       27       54

CHANGES FROM 04/06/10 (CHANGE IN OPEN INTEREST:      3,002)
   1,610      218        0    1,475    2,832    3,085    3,050      -83      -48

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    70.8      2.5      0.0     29.0     97.2     99.8     99.7      0.2      0.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       6        3        0        9       13       15       16
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
FUTURES ONLY POSITIONS AS OF 04/13/10                         |
--------------------------------------------------------------| 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:       24,855
COMMITMENTS
  20,511    6,860      146    4,116   17,826   24,773   24,832       82       23

CHANGES FROM 04/06/10 (CHANGE IN OPEN INTEREST:      1,388)
   1,230       -9        2      103    1,377    1,335    1,370       53       18

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    82.5     27.6      0.6     16.6     71.7     99.7     99.9      0.3      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
       6        2        1       10       12       17       14
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 04/13/10                         |
--------------------------------------------------------------| 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:        2,487
COMMITMENTS
   2,255      593        0       51    1,893    2,306    2,486      181        1

CHANGES FROM 04/06/10 (CHANGE IN OPEN INTEREST:         20)
      10       20        0        0        0       10       20       10        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    90.7     23.8      0.0      2.1     76.1     92.7    100.0      7.3      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
      19        2        0        1        2       20        4
```

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Updated April 16, 2010