```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/16/10          |
--------------------------------------------------------------| 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:       15,302
COMMITMENTS
  10,589      279       16    4,455   14,759   15,060   15,055      242      248

CHANGES FROM 03/09/10 (CHANGE IN OPEN INTEREST:      2,737)
     157     -111        3    2,420    2,601    2,581    2,493      156      244

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    69.2      1.8      0.1     29.1     96.4     98.4     98.4      1.6      1.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       7        3        1       10       14       17       18
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/16/10          |
--------------------------------------------------------------| 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:       25,189
COMMITMENTS
  18,601    5,493    1,849    4,318   17,489   24,768   24,831      421      358

CHANGES FROM 03/09/10 (CHANGE IN OPEN INTEREST:        221)
     834      612     -488     -428     -186      -81      -62      302      283

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    73.8     21.8      7.3     17.1     69.4     98.3     98.6      1.7      1.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       6        4        3       14       14       22       19
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/16/10          |
--------------------------------------------------------------| 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:        3,940
COMMITMENTS
   2,630      438      993       55    2,451    3,679    3,883      261       57

CHANGES FROM 03/09/10 (CHANGE IN OPEN INTEREST:         32)
      26        1       -1       -0       32       24       32        7       -0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    66.8     11.1     25.2      1.4     62.2     93.4     98.5      6.6      1.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
      19        2        7        2        2       23        9
 
 
RGGI CO2 ALLOWANCE 2009 - CHICAGO CLIMATE FUTURES EXCHANGE           Code-00626U
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/16/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:        9,502
COMMITMENTS
     704       31       44    8,530    9,395    9,278    9,470      224       32

CHANGES FROM 03/09/10 (CHANGE IN OPEN INTEREST:       -401)
       0       -8       21     -478     -423     -457     -410       56        9

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     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
 
 
RGGI CO2 ALLOWANCE 2010 - CHICAGO CLIMATE FUTURES EXCHANGE           Code-00626V
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/16/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:        9,467
COMMITMENTS
     502       84       70    8,889    9,313    9,462    9,467        5       -0

CHANGES FROM 03/09/10 (CHANGE IN OPEN INTEREST:          .)
       .        .        .        .        .        .        .        .        .

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     5.3      0.9      0.7     93.9     98.4     99.9    100.0      0.1     -0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       2        1        1       13       11       16       12
```

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Updated March 19, 2010