NY RES FUEL 1.0% SULFUR SWAP - NEW YORK MERCANTILE EXCHANGE          Code-02165B
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:        6,357
COMMITMENTS
   1,080    1,380        0    4,408    4,545    5,488    5,925      869      432

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:        223)
       0      120      -25       95      178       70      273      153      -50

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    17.0     21.7      0.0     69.3     71.5     86.3     93.2     13.7      6.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       1        3        0       16       21       17       24
 
 
NO. 2 HEATING OIL, N.Y. HARBOR - NEW YORK MERCANTILE EXCHANGE        Code-022651
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 42,000 U.S. GALLONS)                   OPEN INTEREST:      166,532
COMMITMENTS
  23,519   17,271   22,157   91,909  103,791  137,585  143,219   28,947   23,313

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:     -4,525)
    -751   -3,057   -1,665      477    1,812   -1,939   -2,910   -2,586   -1,615

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    14.1     10.4     13.3     55.2     62.3     82.6     86.0     17.4     14.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      122)
      30       23       30       57       61      104      100
 
 
NATURAL GAS - NEW YORK MERCANTILE EXCHANGE                           Code-023651
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(10,000 MMBTU'S)                                     OPEN INTEREST:      822,866
COMMITMENTS
  90,804  103,112  321,610  337,077  362,603  749,491  787,325   73,375   35,541

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:     -9,114)
   3,668   -6,450   -2,170   -9,516    5,150   -8,018   -3,470   -1,096   -5,644

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    11.0     12.5     39.1     41.0     44.1     91.1     95.7      8.9      4.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      228)
      73       57       77       93       72      201      174
 
 
MICHCON BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-02365A
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       70,499
COMMITMENTS
   1,363   11,912    3,352   58,381   50,557   63,096   65,821    7,403    4,678

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:        910)
   1,243        0     -737    1,121    1,421    1,627      684     -717      226

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     1.9     16.9      4.8     82.8     71.7     89.5     93.4     10.5      6.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       25)
       1        1        1       18       21       19       23
 
 
PERMIAN BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-02365B
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       67,343
COMMITMENTS
   5,640    2,407    5,807   48,073   51,947   59,520   60,161    7,823    7,182

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:       -426)
  -2,664        0      360    1,274   -1,210   -1,030     -850      604      424

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     8.4      3.6      8.6     71.4     77.1     88.4     89.3     11.6     10.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       32)
       4        1        4       24       18       29       22
 
 
M-3 BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365C
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      133,079
COMMITMENTS
   5,902      594      765  112,617  121,921  119,284  123,280   13,795    9,799

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      2,388)
     744        0        0    1,099    1,840    1,843    1,840      545      548

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     4.4      0.4      0.6     84.6     91.6     89.6     92.6     10.4      7.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       35)
       3        1        1       26       26       30       27
 
 
TCO BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365D
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       80,158
COMMITMENTS
  11,984        0        0   62,124   70,494   74,108   70,494    6,050    9,664

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:       -336)
       0        0        0     -246     -457     -246     -457      -90      121

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    15.0      0.0      0.0     77.5     87.9     92.5     87.9      7.5     12.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       1        0        0       23       24       24       24
 
 
MALIN BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                      Code-02365E
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       87,896
COMMITMENTS
   1,044   13,816    3,708   79,474   63,600   84,226   81,124    3,670    6,772

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      3,411)
       0    1,342      -60    2,437    1,677    2,377    2,959    1,034      452

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     1.2     15.7      4.2     90.4     72.4     95.8     92.3      4.2      7.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       1        4        2       21       17       24       21
 
 
PG&E CITYGATE BASIS SWAP - NEW YORK MERCANTILE EXCHANGE              Code-02365F
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       68,491
COMMITMENTS
   6,859   10,182    3,265   51,703   48,247   61,827   61,694    6,664    6,797

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:        901)
  -1,183        0       42    1,490      721      349      763      552      138

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    10.0     14.9      4.8     75.5     70.4     90.3     90.1      9.7      9.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       2        4        4       19       20       24       25
 
 
NGPL TEXOK BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                 Code-02365G
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      103,543
COMMITMENTS
       0    2,947    5,159   91,817   86,405   96,976   94,511    6,567    9,032

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:     -1,757)
       0   -4,368    1,712   -2,861      899   -1,149   -1,757     -608        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.0      2.8      5.0     88.7     83.4     93.7     91.3      6.3      8.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       36)
       0        1        1       29       27       30       28
 
 
SUMAS BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                      Code-02365J
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       47,076
COMMITMENTS
   3,937    6,323      495   34,198   35,140   38,630   41,958    8,446    5,118

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      1,060)
     -60      622       60      213      -96      213      586      847      474

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     8.4     13.4      1.1     72.6     74.6     82.1     89.1     17.9     10.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
       1        2        1       15       17       17       19
 
 
NGPL MID-CON BASIS SWAP - NEW YORK MERCANTILE EXCHANGE               Code-02365K
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       64,042
COMMITMENTS
       0    2,396    2,586   49,596   50,681   52,182   55,663   11,860    8,379

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:        214)
       0      123       60      434      370      494      553     -280     -339

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.0      3.7      4.0     77.4     79.1     81.5     86.9     18.5     13.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       21)
       0        1        1       17       16       18       17
 
 
DOMINION BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                   Code-02365N
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      106,543
COMMITMENTS
   7,996        0    1,440   88,279   99,194   97,715  100,634    8,828    5,909

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      2,371)
       0        0        0    2,727    2,395    2,727    2,395     -356      -24

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     7.5      0.0      1.4     82.9     93.1     91.7     94.5      8.3      5.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       32)
       1        0        1       28       26       29       27
 
 
WAHA BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                       Code-02365O
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       81,412
COMMITMENTS
       0    9,515    4,588   71,265   60,526   75,853   74,629    5,559    6,783

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      1,269)
       0   -1,840    1,383     -196    1,626    1,187    1,169       82      100

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.0     11.7      5.6     87.5     74.3     93.2     91.7      6.8      8.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       36)
       0        3        1       28       25       29       28
 
 
CIG BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365P
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       60,683
COMMITMENTS
       0      222    3,922   46,278   48,138   50,200   52,282   10,483    8,401

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      1,584)
       0     -919      824      732        7    1,556      -88       28    1,672

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.0      0.4      6.5     76.3     79.3     82.7     86.2     17.3     13.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       0        1        1       17       22       18       23
 
 
HENRY HUB INDEX SWAP - NEW YORK MERCANTILE EXCHANGE                  Code-023A09
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       57,676
COMMITMENTS
   5,382    7,830        0   49,405   48,972   54,787   56,802    2,889      874

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      5,040)
   2,460      240        0    1,575    5,190    4,035    5,430    1,005     -390

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     9.3     13.6      0.0     85.7     84.9     95.0     98.5      5.0      1.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       42)
       7        3        0       16       23       23       26
 
 
ALBERTA BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-035650
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      183,355
COMMITMENTS
   1,717   14,293    6,952  166,353  157,695  175,022  178,940    8,333    4,415

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      5,613)
       0   -3,874    1,854    4,908    9,105    6,762    7,085   -1,149   -1,472

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.9      7.8      3.8     90.7     86.0     95.5     97.6      4.5      2.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       43)
       1        3        4       36       31       40       35
 
 
CHICAGO BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-035651
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       84,683
COMMITMENTS
   3,554        0    4,355   64,095   65,486   72,004   69,841   12,679   14,842

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      1,025)
     894     -194     -640    1,291    1,712    1,545      878     -520      147

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     4.2      0.0      5.1     75.7     77.3     85.0     82.5     15.0     17.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       2        0        1       21       18       23       19
 
 
HENRY HUB BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                  Code-035652
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       75,461
COMMITMENTS
   4,422   10,538        0   68,858   62,975   73,280   73,513    2,181    1,948

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      3,184)
   1,500      240        0    1,695    2,910    3,195    3,150      -11       34

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     5.9     14.0      0.0     91.2     83.5     97.1     97.4      2.9      2.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       43)
       6        3        0       21       23       27       26
 
 
HOUSTON SHIP CH BASIS SWAP - NEW YORK MERCANTILE EXCHANGE            Code-035653
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      270,487
COMMITMENTS
  15,678    3,476    3,374  242,683  260,458  261,735  267,308    8,752    3,179

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      5,176)
  -2,956        0    1,326    6,468    3,418    4,838    4,744      338      432

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     5.8      1.3      1.2     89.7     96.3     96.8     98.8      3.2      1.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       56)
       5        3        5       41       45       48       51
 
 
NW PIPE ROCKIES BASIS SWAP - NEW YORK MERCANTILE EXCHANGE            Code-035654
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      156,693
COMMITMENTS
  12,698    4,754    5,768  131,369  140,583  149,835  151,105    6,858    5,588

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:        334)
   1,025     -794   -1,431    1,422    3,316    1,016    1,091     -682     -757

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     8.1      3.0      3.7     83.8     89.7     95.6     96.4      4.4      3.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       45)
       2        4        5       36       33       42       38
 
 
PANHANDLE BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                  Code-035655
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      154,043
COMMITMENTS
  11,520    1,978    2,169  130,703  139,731  144,392  143,878    9,651   10,165

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      8,434)
  11,520   -1,969   -2,531    3,197   15,438   12,186   10,938   -3,752   -2,504

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     7.5      1.3      1.4     84.8     90.7     93.7     93.4      6.3      6.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       47)
       1        2        2       39       39       41       42
 
 
SOCAL BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                      Code-035657
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      188,549
COMMITMENTS
  10,506   37,541   12,914  158,868  129,442  182,288  179,897    6,261    8,652

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      4,350)
   1,515     -754      134    2,865    4,419    4,514    3,799     -164      551

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     5.6     19.9      6.8     84.3     68.7     96.7     95.4      3.3      4.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       47)
       5        4        8       29       34       38       42
 
 
TRANSCO ZONE 6 BASIS SWAP - NEW YORK MERCANTILE EXCHANGE             Code-035658
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       58,274
COMMITMENTS
       0        0        0   52,938   47,372   52,938   47,372    5,336   10,902

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:         20)
       0        0        0     -804     -117     -804     -117      824      137

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.0      0.0      0.0     90.8     81.3     90.8     81.3      9.2     18.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       0        0        0       18       20       18       20
 
 
HENRY HUB GAS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-03565B
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:    1,997,788
COMMITMENTS
 386,729   56,709  541,917  1052673  1386387  1981319  1985013   16,469   12,775

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:    -19,123)
   8,134    8,503    3,456  -29,562  -31,576  -17,972  -19,617   -1,151      494

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    19.4      2.8     27.1     52.7     69.4     99.2     99.4      0.8      0.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      141)
      25       15       37       98       79      136      119
 
 
HENRY HUB PENULTIMATE GAS SWAP - NEW YORK MERCANTILE EXCHANGE        Code-03565C
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      488,344
COMMITMENTS
  82,768   43,289  128,852  271,886  311,776  483,506  483,917    4,838    4,427

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:    -50,308)
 -33,115    3,614  -10,545   -6,956  -43,850  -50,616  -50,781      308      473

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    16.9      8.9     26.4     55.7     63.8     99.0     99.1      1.0      0.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       58)
      15       11       20       31       30       55       52
 
 
PJM ELECTRICITY MONTHLY - NEW YORK MERCANTILE EXCHANGE               Code-064657
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(40 MEGAWATT HOURS PER PEAK DAY)                     OPEN INTEREST:       56,751
COMMITMENTS
  10,392    3,352    7,022   38,248   45,004   55,662   55,378    1,089    1,373

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      1,523)
    -740      732      580    1,666     -429    1,506      883       17      640

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    18.3      5.9     12.4     67.4     79.3     98.1     97.6      1.9      2.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       55)
       7        5        6       40       38       49       47
 
 
NYISO ZONE A LBMP SWAP - NEW YORK MERCANTILE EXCHANGE                Code-06465A
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS 0F 400 MEGAWATT HOURS)                    OPEN INTEREST:       25,741
COMMITMENTS
   1,152    4,391      625   23,794   20,300   25,571   25,316      170      425

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:        174)
       0        0        0      174      174      174      174        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     4.5     17.1      2.4     92.4     78.9     99.3     98.3      0.7      1.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       37)
       1        4        2       25       25       27       30
 
 
NYISO ZONE G LBMP SWAP - NEW YORK MERCANTILE EXCHANGE                Code-06465B
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS 0F 400 MEGAWATT HOURS)                    OPEN INTEREST:       16,091
COMMITMENTS
   2,966      644      308   12,643   15,053   15,917   16,005      174       86

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:        -18)
       0        0        0     -192     -104     -192     -104      174       86

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    18.4      4.0      1.9     78.6     93.5     98.9     99.5      1.1      0.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       3        2        1       19       19       22       22
 
 
NYISO ZONE J LBMP SWAP - NEW YORK MERCANTILE EXCHANGE                Code-06465C
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS 0F 400 MEGAWATT HOURS)                    OPEN INTEREST:       14,334
COMMITMENTS
   1,066    2,719        0   12,737   11,615   13,803   14,334      531        0

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:        -72)
       0        0        0      -72      -72      -72      -72        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     7.4     19.0      0.0     88.9     81.0     96.3    100.0      3.7      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
       1        3        0       13       11       14       14
 
 
ISO NEW ENGLAND LMP SWAP - NEW YORK MERCANTILE EXCHANGE              Code-06465H
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(40 MEGAWATT HOURS PER PEAK DAY)                     OPEN INTEREST:       25,186
COMMITMENTS
   3,080    4,680      372   21,314   19,820   24,766   24,872      420      314

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:       -220)
       0       20        0     -220     -240     -220     -220        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    12.2     18.6      1.5     84.6     78.7     98.3     98.8      1.7      1.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       33)
       2        3        3       24       21       28       25
 
 
PJM CAL MONTH OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE         Code-06465M
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       28,570
COMMITMENTS
   3,370      140      540   22,975   27,718   26,885   28,398    1,685      172

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:         10)
       0        0        0       20       10       20       10      -10        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    11.8      0.5      1.9     80.4     97.0     94.1     99.4      5.9      0.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       33)
       2        1        3       27       27       30       30
 
 
NORTH ILL OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE             Code-06465N
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       22,746
COMMITMENTS
     580        0    1,460   20,118   21,146   22,158   22,606      588      140

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:        -60)
       0        0        0      -80      -60      -80      -60       20        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     2.5      0.0      6.4     88.4     93.0     97.4     99.4      2.6      0.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       2        0        2       13       15       15       17
 
 
ISO NEW ENG OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE           Code-06465S
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       14,514
COMMITMENTS
     540      364    1,136   12,012   12,454   13,688   13,954      826      560

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:         20)
       0        0        0       20       20       20       20        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     3.7      2.5      7.8     82.8     85.8     94.3     96.1      5.7      3.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
       2        1        2       14       15       17       17
 
 
CRUDE OIL, LIGHT SWEET - NEW YORK MERCANTILE EXCHANGE                Code-067651
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:    1,018,291
COMMITMENTS
 175,621  127,164  221,523  556,137  599,026  953,281  947,713   65,010   70,578

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:     23,025)
   3,834    9,977   -2,971   14,246   13,567   15,109   20,573    7,916    2,452

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    17.2     12.5     21.8     54.6     58.8     93.6     93.1      6.4      6.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      298)
      84       89      118       85       97      247      244
 
 
E-MINY CRUDE OIL, LIGHT SWEET - NEW YORK MERCANTILE EXCHANGE         Code-067655
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 500 BARRELS)                           OPEN INTEREST:       17,616
COMMITMENTS
   8,617    9,593        4        0        0    8,621    9,597    8,995    8,019

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:     -8,530)
  -4,591   -6,995     -718   -1,368     -593   -6,677   -8,306   -1,853     -224

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    48.9     54.5      0.0      0.0      0.0     48.9     54.5     51.1     45.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
      12       10        1        0        0       12       11
 
 
PALLADIUM - NEW YORK MERCANTILE EXCHANGE                             Code-075651
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 100 TROY OUNCES)                       OPEN INTEREST:       19,326
COMMITMENTS
   9,973    2,616    1,156    4,956   14,848   16,085   18,620    3,241      706

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:      1,938)
      86     -566      100    2,157    2,709    2,343    2,243     -405     -305

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    51.6     13.5      6.0     25.6     76.8     83.2     96.3     16.8      3.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      110)
      65        6        8       19       30       89       41
 
 
PLATINUM - NEW YORK MERCANTILE EXCHANGE                              Code-076651
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 50 TROY OUNCES)                        OPEN INTEREST:        9,616
COMMITMENTS
   4,745    1,878      259    1,979    6,467    6,983    8,604    2,633    1,012

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:        121)
     242      432      186      -99      175      329      793     -208     -672

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    49.3     19.5      2.7     20.6     67.3     72.6     89.5     27.4     10.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       64)
      28        7        4       13       18       45       27
 
 
UNLEADED GASOLINE, N.Y. HARBOR - NEW YORK MERCANTILE EXCHANGE        Code-111652
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 42,000 U.S. GALLONS)                   OPEN INTEREST:       95,798
COMMITMENTS
  19,972    6,593    4,940   56,080   74,924   80,992   86,457   14,806    9,341

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:     -6,940)
     679   -4,051   -2,527   -5,795   -2,069   -7,643   -8,647      703    1,707

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    20.8      6.9      5.2     58.5     78.2     84.5     90.2     15.5      9.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      124)
      40       12       18       52       64      100       86
 
 
GASOLINE BLENDSTOCK (RBOB) - NEW YORK MERCANTILE EXCHANGE            Code-111659
FUTURES ONLY POSITIONS AS OF 05/30/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 42,000 U.S. GALLONS)                   OPEN INTEREST:       48,978
COMMITMENTS
   6,936        0    3,074   35,871   43,328   45,881   46,402    3,097    2,576

CHANGES FROM 05/23/06 (CHANGE IN OPEN INTEREST:     -1,106)
    -890        0      462   -1,208   -1,408   -1,636     -946      530     -160

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    14.2      0.0      6.3     73.2     88.5     93.7     94.7      6.3      5.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       49)
       7        0        4       28       35       35       39
 

Updated June 2, 2006