SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/04/08          |
--------------------------------------------------------------| 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:       31,032
COMMITMENTS
   8,774    4,111    4,594   17,586   22,306   30,953   31,011       79       21

CHANGES FROM 02/26/08 (CHANGE IN OPEN INTEREST:      1,666)
     735      709     -957    2,031    1,949    1,809    1,701     -143      -35

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    28.3     13.2     14.8     56.7     71.9     99.7     99.9      0.3      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       9        9       10       12       11       26       25


Updated March 7, 2008