SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/11/08          |
--------------------------------------------------------------| 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:       35,460
COMMITMENTS
   9,049    4,179    4,824   21,443   26,311   35,315   35,313      145      147

CHANGES FROM 03/04/08 (CHANGE IN OPEN INTEREST:      4,428)
     275       68      230    3,857    4,004    4,362    4,302       66      126

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    25.5     11.8     13.6     60.5     74.2     99.6     99.6      0.4      0.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
      11        8       10       12       12       27       26


Updated March 14, 2008