GULF # 6 FUEL 3.0% SULFUR SWAP - NEW YORK MERCANTILE EXCHANGE        Code-02165A
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:        8,724
COMMITMENTS
   1,500      975      225    5,649    7,324    7,374    8,524    1,350      200

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      1,060)
     325      975     -100      685       35      910      910      150      150

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    17.2     11.2      2.6     64.8     84.0     84.5     97.7     15.5      2.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
       1        1        1       18       14       19       16
 
 
NY RES FUEL 1.0% SULFUR SWAP - NEW YORK MERCANTILE EXCHANGE          Code-02165B
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:       15,242
COMMITMENTS
      75    6,279       21   14,074    7,192   14,170   13,492    1,072    1,750

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:        635)
       0      -75        0        3      535        3      460      632      175

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.5     41.2      0.1     92.3     47.2     93.0     88.5      7.0     11.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       35)
       1        2        1       27       26       29       28
 
 
SING FUEL OIL 180 CAL SWAP - NEW YORK MERCANTILE EXCHANGE            Code-02165G
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 METRIC TONS)                     OPEN INTEREST:        2,585
COMMITMENTS
       0      125      230    2,051    1,806    2,281    2,161      304      424

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:       -815)
       0       35      200     -640     -725     -440     -490     -375     -325

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      4.8      8.9     79.3     69.9     88.2     83.6     11.8     16.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       33)
       0        2        2       26       28       28       30
 
 
NO. 2 HEATING OIL, N.Y. HARBOR - NEW YORK MERCANTILE EXCHANGE        Code-022651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 42,000 U.S. GALLONS)                   OPEN INTEREST:      223,324
COMMITMENTS
  26,312   23,985   35,292  130,059  133,805  191,663  193,082   31,661   30,242

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:     -3,094)
  -4,969      912   -1,374    2,457   -6,979   -3,886   -7,441      792    4,347

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    11.8     10.7     15.8     58.2     59.9     85.8     86.5     14.2     13.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      139)
      28       33       31       65       67      114      114
 
 
NATURAL GAS - NEW YORK MERCANTILE EXCHANGE                           Code-023651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(10,000 MMBTU'S)                                     OPEN INTEREST:    1,258,685
COMMITMENTS
  69,457  139,906  486,851  629,705  595,008  1186014  1221765   72,671   36,920

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:       -280)
     595   -4,533   -4,758    3,340   11,213     -823    1,922      543   -2,202

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     5.5     11.1     38.7     50.0     47.3     94.2     97.1      5.8      2.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      227)
      55       82       91       82       79      197      196
 
 
MICHCON BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-02365A
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       89,437
COMMITMENTS
   1,148   14,617    3,266   75,716   64,581   80,130   82,464    9,307    6,973

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      1,369)
    -698      433      242    1,765      396    1,309    1,071       60      298

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     1.3     16.3      3.7     84.7     72.2     89.6     92.2     10.4      7.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       1        3        2       20       20       22       24
 
 
PERMIAN BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-02365B
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       58,609
COMMITMENTS
   2,737    1,242    2,529   44,187   44,390   49,453   48,161    9,156   10,448

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      2,565)
     789     -124     -134    4,143    3,004    4,798    2,746   -2,233     -181

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     4.7      2.1      4.3     75.4     75.7     84.4     82.2     15.6     17.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       1        1        2       23       17       25       19
 
 
M-3 BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365C
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      124,736
COMMITMENTS
  12,569    1,566    7,183   94,822  106,733  114,574  115,482   10,162    9,254

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:        878)
   1,251        0     -217      240      331    1,274      114     -396      764

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    10.1      1.3      5.8     76.0     85.6     91.9     92.6      8.1      7.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       35)
       3        1        4       21       27       25       31
 
 
TCO BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365D
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       83,653
COMMITMENTS
  20,112    7,534    6,745   47,216   59,252   74,073   73,531    9,580   10,122

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:     -7,323)
  -4,495   -7,181    3,692   -6,127   -3,190   -6,930   -6,679     -393     -644

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    24.0      9.0      8.1     56.4     70.8     88.5     87.9     11.5     12.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       2        3        2       18       19       22       22
 
 
MALIN BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                      Code-02365E
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       81,698
COMMITMENTS
   5,693    1,729    5,937   66,769   68,586   78,399   76,252    3,299    5,446

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      4,726)
   2,738      610   -1,317    4,129    5,669    5,550    4,962     -824     -236

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     7.0      2.1      7.3     81.7     84.0     96.0     93.3      4.0      6.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       3        1        4       19       21       23       25
 
 
PG&E CITYGATE BASIS SWAP - NEW YORK MERCANTILE EXCHANGE              Code-02365F
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       63,415
COMMITMENTS
   5,931        0    2,225   50,554   54,695   58,710   56,920    4,705    6,495

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:        957)
  -2,326        0      340    2,883      737      897    1,077       60     -120

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     9.4      0.0      3.5     79.7     86.2     92.6     89.8      7.4     10.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       2        0        2       19       21       21       23
 
 
NGPL TEXOK BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                 Code-02365G
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       89,320
COMMITMENTS
   2,142    3,467    4,864   73,657   71,436   80,663   79,767    8,657    9,553

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:     -7,420)
    -583    2,693   -1,849   -4,053   -7,076   -6,485   -6,232     -935   -1,188

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     2.4      3.9      5.4     82.5     80.0     90.3     89.3      9.7     10.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       34)
       1        3        3       23       26       27       29
 
 
NGPL MID-CON BASIS SWAP - NEW YORK MERCANTILE EXCHANGE               Code-02365K
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       83,068
COMMITMENTS
       0    7,972    2,408   69,807   62,173   72,215   72,553   10,853   10,515

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:     -5,656)
       0      825     -688   -4,207   -7,062   -4,895   -6,925     -761    1,269

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      9.6      2.9     84.0     74.8     86.9     87.3     13.1     12.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       0        2        2       22       19       24       21
 
 
DEMARC BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                     Code-02365L
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       36,959
COMMITMENTS
   7,421    2,568      877   25,873   27,478   34,171   30,923    2,788    6,036

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:          .)
       .        .        .        .        .        .        .        .        .

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    20.1      6.9      2.4     70.0     74.3     92.5     83.7      7.5     16.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       3        1        2       11       11       14       14
 
 
DOMINION BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                   Code-02365N
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       76,314
COMMITMENTS
  11,634      355    6,055   52,530   62,458   70,219   68,868    6,095    7,446

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      8,427)
     640        0    1,561    6,834    6,746    9,035    8,307     -608      120

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    15.2      0.5      7.9     68.8     81.8     92.0     90.2      8.0      9.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       3        1        3       24       21       28       24
 
 
WAHA BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                       Code-02365O
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      118,175
COMMITMENTS
   1,134   15,953    6,886  100,551   80,172  108,571  103,011    9,604   15,164

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:     -4,365)
  -4,334    2,564      560     -629   -8,082   -4,403   -4,958       38      593

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     1.0     13.5      5.8     85.1     67.8     91.9     87.2      8.1     12.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       40)
       1        5        3       26       25       29       31
 
 
CIG BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365P
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       59,876
COMMITMENTS
       0    7,450    1,548   45,576   40,595   47,124   49,593   12,752   10,283

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:     -4,488)
       0     -882      166   -3,231   -3,316   -3,065   -4,032   -1,423     -456

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0     12.4      2.6     76.1     67.8     78.7     82.8     21.3     17.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       0        2        2       18       18       20       20
 
 
ALBERTA BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-035650
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      166,648
COMMITMENTS
   3,790   22,997   12,495  141,023  125,383  157,308  160,875    9,340    5,773

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      7,423)
    -608      475    1,261    9,082    5,259    9,735    6,995   -2,312      428

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     2.3     13.8      7.5     84.6     75.2     94.4     96.5      5.6      3.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       49)
       3        6        8       38       36       46       45
 
 
CHICAGO BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-035651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       94,861
COMMITMENTS
      12    9,783    4,247   84,222   69,697   88,481   83,727    6,380   11,134

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      6,242)
  -1,949    1,158      685    7,721    5,253    6,457    7,096     -215     -854

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0     10.3      4.5     88.8     73.5     93.3     88.3      6.7     11.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       32)
       1        4        4       22       19       26       24
 
 
HOUSTON SHIP CH BASIS SWAP - NEW YORK MERCANTILE EXCHANGE            Code-035653
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      277,340
COMMITMENTS
  18,081    1,117    6,149  241,198  259,785  265,428  267,051   11,912   10,289

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      3,912)
   4,033      524   -1,792    2,912    5,794    5,153    4,526   -1,241     -614

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     6.5      0.4      2.2     87.0     93.7     95.7     96.3      4.3      3.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       56)
       6        2        6       38       42       45       49
 
 
NW PIPE ROCKIES BASIS SWAP - NEW YORK MERCANTILE EXCHANGE            Code-035654
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      179,462
COMMITMENTS
   7,004    7,789   15,780  142,351  149,500  165,135  173,069   14,327    6,393

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      9,092)
    -991    1,510      277    9,806    6,877    9,092    8,664        0      428

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     3.9      4.3      8.8     79.3     83.3     92.0     96.4      8.0      3.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       47)
       2        3        4       37       35       41       40
 
 
PANHANDLE BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                  Code-035655
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      172,127
COMMITMENTS
   9,762    5,679   11,306  127,931  141,836  148,999  158,821   23,128   13,306

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      4,794)
  -1,542    1,717    2,256    3,113    2,917    3,827    6,890      967   -2,096

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     5.7      3.3      6.6     74.3     82.4     86.6     92.3     13.4      7.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       43)
       3        3        5       29       33       35       38
 
 
SAN JUAN BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                   Code-035656
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       51,689
COMMITMENTS
       0    2,763    2,494   35,520   33,384   38,014   38,641   13,675   13,048

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      3,405)
       0     -888      363    1,586    3,626    1,949    3,101    1,456      304

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      5.3      4.8     68.7     64.6     73.5     74.8     26.5     25.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       21)
       0        1        1       16       17       17       18
 
 
SOCAL BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                      Code-035657
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      246,729
COMMITMENTS
  29,327    6,978   21,267  181,742  207,011  232,336  235,256   14,393   11,473

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      1,658)
   1,840     -274     -761      927    7,687    2,006    6,652     -348   -4,994

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    11.9      2.8      8.6     73.7     83.9     94.2     95.3      5.8      4.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       55)
       7        4        7       39       39       50       46
 
 
TRANSCO ZONE 6 BASIS SWAP - NEW YORK MERCANTILE EXCHANGE             Code-035658
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       64,984
COMMITMENTS
   1,372    5,972    3,368   53,716   44,823   58,456   54,163    6,528   10,821

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      2,448)
       0     -430      370    2,016    2,508    2,386    2,448       62        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     2.1      9.2      5.2     82.7     69.0     90.0     83.3     10.0     16.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       1        2        3       22       21       25       24
 
 
HENRY HUB GAS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-03565B
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:    2,495,244
COMMITMENTS
 192,784   60,702  787,363  1483815  1630979  2463962  2479044   31,282   16,200

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      3,144)
   1,207   13,518  -24,530   26,758   11,696    3,435      684     -291    2,460

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     7.7      2.4     31.6     59.5     65.4     98.7     99.4      1.3      0.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      151)
      33       15       41       99       88      144      132
 
 
HENRY HUB PENULTIMATE GAS SWAP - NEW YORK MERCANTILE EXCHANGE        Code-03565C
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:    1,046,987
COMMITMENTS
 130,473  320,238  164,144  747,279  558,158  1041896  1042540    5,091    4,447

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:     13,039)
    -968   14,355    1,047   13,301   -3,162   13,380   12,240     -341      799

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    12.5     30.6     15.7     71.4     53.3     99.5     99.6      0.5      0.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       73)
      21       15       28       37       36       68       69
 
 
PJM ELECTRICITY MONTHLY - NEW YORK MERCANTILE EXCHANGE               Code-064657
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(40 MEGAWATT HOURS PER PEAK DAY)                     OPEN INTEREST:       88,759
COMMITMENTS
   1,952    1,174    3,605   82,763   83,559   88,319   88,338      440      421

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      2,380)
     -99       32      215    2,250    2,216    2,366    2,463       14      -83

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     2.2      1.3      4.1     93.2     94.1     99.5     99.5      0.5      0.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       57)
       5        7        9       41       36       52       46
 
 
NYISO ZONE A LBMP SWAP - NEW YORK MERCANTILE EXCHANGE                Code-06465A
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS 0F 400 MEGAWATT HOURS)                    OPEN INTEREST:       17,357
COMMITMENTS
     810        0      726   15,756   16,421   17,292   17,147       65      210

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:     -1,071)
      84      -42      -84   -1,071     -924   -1,071   -1,050        0      -21

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     4.7      0.0      4.2     90.8     94.6     99.6     98.8      0.4      1.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       25)
       1        0        1       13       17       14       18
 
 
ISO NEW ENGLAND LMP SWAP - NEW YORK MERCANTILE EXCHANGE              Code-06465H
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(40 MEGAWATT HOURS PER PEAK DAY)                     OPEN INTEREST:       19,268
COMMITMENTS
   1,808        0      250   16,752   18,099   18,810   18,348      458      920

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:         87)
      50        0        5      -51       37        4       42       83       45

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     9.4      0.0      1.3     86.9     93.9     97.6     95.2      2.4      4.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       2        0        2       18       19       20       21
 
 
NORTH ILL CAL MONTH LMP SWAP - NEW YORK MERCANTILE EXCHANGE          Code-06465I
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(40 MEGAWATT HOURS PER PEAK DAY)                     OPEN INTEREST:       13,810
COMMITMENTS
     960       60      110   11,970   13,146   13,040   13,316      770      494

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:        201)
       0        0        0      201      213      201      213        0      -12

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     7.0      0.4      0.8     86.7     95.2     94.4     96.4      5.6      3.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
       1        1        1       16       14       17       16
 
 
PJM CAL MONTH OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE         Code-06465M
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       28,373
COMMITMENTS
     963        0      513   25,987   27,578   27,463   28,091      910      282

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:        -36)
       0        0        0     -276      -36     -276      -36      240        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     3.4      0.0      1.8     91.6     97.2     96.8     99.0      3.2      1.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       33)
       3        0        2       23       22       26       24
 
 
NORTH ILL OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE             Code-06465N
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       27,026
COMMITMENTS
     340      664    1,540   24,610   24,438   26,490   26,642      536      384

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:       -136)
     -20        0       20     -176     -156     -176     -136       40        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     1.3      2.5      5.7     91.1     90.4     98.0     98.6      2.0      1.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
       2        1        1       18       15       20       17
 
 
ISO NEW ENG OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE           Code-06465S
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       10,430
COMMITMENTS
       0      280      520    9,140    8,946    9,660    9,746      770      684

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:          8)
       0        0        0        2        0        2        0        6        8

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      2.7      5.0     87.6     85.8     92.6     93.4      7.4      6.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       0        1        1       14       14       15       15
 
 
CRUDE OIL, LIGHT SWEET - NEW YORK MERCANTILE EXCHANGE                Code-067651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:    2,401,661
COMMITMENTS
 194,804  121,996  630,674  1495852  1564306  2321330  2316976   80,331   84,685

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:     57,082)
  -1,522    5,561     -370   59,357   52,382   57,464   57,572     -383     -491

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     8.1      5.1     26.3     62.3     65.1     96.7     96.5      3.3      3.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      356)
     123      107      171       94      100      299      315
 
 
DUBAI CRUDE OIL CALENDAR SWAP - NEW YORK MERCANTILE EXCHANGE         Code-06765G
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:       17,395
COMMITMENTS
       0        0        0   17,395   17,395   17,395   17,395        0        0

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:        150)
       0        0        0      150      150      150      150        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      0.0      0.0    100.0    100.0    100.0    100.0      0.0      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       25)
       0        0        0       19       19       19       19
 
 
WTI CRUDE OIL FINANCIAL - NEW YORK MERCANTILE EXCHANGE               Code-06765I
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:       70,798
COMMITMENTS
   2,408   10,548   23,158   39,140   31,164   64,706   64,870    6,092    5,928

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:        416)
      61     -491     -477       69      273     -347     -695      763    1,111

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     3.4     14.9     32.7     55.3     44.0     91.4     91.6      8.6      8.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       8        6       13       17       17       30       31
 
 
PALLADIUM - NEW YORK MERCANTILE EXCHANGE                             Code-075651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 100 TROY OUNCES)                       OPEN INTEREST:       20,373
COMMITMENTS
  14,074    2,201      301    3,229   17,586   17,604   20,088    2,769      285

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:        268)
     364      -33      -16     -198       41      150       -8      118      276

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    69.1     10.8      1.5     15.8     86.3     86.4     98.6     13.6      1.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      142)
      90        8        4       15       28      109       39
 
 
PLATINUM - NEW YORK MERCANTILE EXCHANGE                              Code-076651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 50 TROY OUNCES)                        OPEN INTEREST:       15,130
COMMITMENTS
  10,140    1,018      166    1,828   13,072   12,134   14,256    2,996      874

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:        478)
     478      -86      -17      -43      191      418       88       60      390

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    67.0      6.7      1.1     12.1     86.4     80.2     94.2     19.8      5.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       87)
      43        7        2        8       28       53       37
 
 
GASOLINE BLENDSTOCK (RBOB) - NEW YORK MERCANTILE EXCHANGE            Code-111659
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/08/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 42,000 U.S. GALLONS)                   OPEN INTEREST:      224,356
COMMITMENTS
  45,375   15,439   40,441  106,410  141,590  192,226  197,469   32,130   26,886

CHANGES FROM 05/01/07 (CHANGE IN OPEN INTEREST:      2,841)
    -889    4,414    2,545    1,259   -4,089    2,915    2,870      -74      -29

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    20.2      6.9     18.0     47.4     63.1     85.7     88.0     14.3     12.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      208)
      67       36       47       78       94      168      158
 

Updated May 11, 2007