```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 03/23/10                         |
--------------------------------------------------------------| 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:       14,702
COMMITMENTS
  10,499      327        0    4,090   14,255   14,589   14,582      113      120

CHANGES FROM 03/16/10 (CHANGE IN OPEN INTEREST:       -214)
     -65       64        0      -20     -134      -85      -70     -129     -144

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    71.4      2.2      0.0     27.8     97.0     99.2     99.2      0.8      0.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       8        3        0        9       15       17       18
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
FUTURES ONLY POSITIONS AS OF 03/23/10                         |
--------------------------------------------------------------| 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:       23,048
COMMITMENTS
  17,760    5,665    1,466    3,757   15,904   22,983   23,035       65       13

CHANGES FROM 03/16/10 (CHANGE IN OPEN INTEREST:       -286)
    -116       26      -37      223       70       70       59     -356     -345

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    77.1     24.6      6.4     16.3     69.0     99.7     99.9      0.3      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       25)
       5        3        1       12       13       18       16
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 03/23/10                         |
--------------------------------------------------------------| 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:        2,408
COMMITMENTS
   2,167      562        1       51    1,844    2,219    2,407      189        1

CHANGES FROM 03/16/10 (CHANGE IN OPEN INTEREST:          0)
       0        0        0        0        0        0        0        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    90.0     23.3      0.0      2.1     76.6     92.2    100.0      7.8      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
      18        2        1        1        2       20        4
 
 
RGGI CO2 ALLOWANCE 2009 - CHICAGO CLIMATE FUTURES EXCHANGE           Code-00626U
FUTURES ONLY POSITIONS AS OF 03/23/10                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:        9,503
COMMITMENTS
     704       31       44    8,530    9,395    9,278    9,470      225       33

CHANGES FROM 03/16/10 (CHANGE IN OPEN INTEREST:          1)
       0        0        0        0        0        0        0        1        1

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     7.4      0.3      0.5     89.8     98.9     97.6     99.7      2.4      0.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       21)
       2        2        2       11       11       15       13
```

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Updated March 26, 2010