Notice to Members
Notice No. 510
11/08/2005
Margin Rates and Tier Changes for Existing NYMEX Division Natural Gas Basis Swap Contracts
EFFECTIVE DATE: Wednesday, November 9, 2005 (close of business)

FUTURES CONTRACTS: San Juan Basis Swap (NJ), NGPL Mid-Continent Basis Swap (NL)

CONTRACT MONTHS: All Months

NYMEX Division Scan and Intra-Commodity Spread Tiers for San Juan(NJ) and NGPL Mid-Continent(NL) Natural Gas Basis Swaps
 
      Tiers
New
Old
1
1st Nearby
1st Nearby
2
2nd Nearby
2nd Nearby and Greater
3
3rd - 6th Nearby
N/A
4
7th - 12th Nearby
N/A
5
13th And Greater
N/A


NYMEX Division Scan Margin Rates for San Juan(NJ) and NGPL Mid-Continent(NL) Natural Gas Basis Swaps
 
Natural Gas Basis Financial
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Customer Initial Margin
Spot Assessment
San Juan Basis Swap (NJ)
New
Old
New
Old
New
Old
New
Old
  Tier 1: 1st Nearby
$800
$1,100
$880
$1,210
$1,080
$1,485
$250
$250
  Tier 2: 2nd Nearby
$775
$475
$853
$523
$1,046
$641
 
 
  Tier 3: 3rd - 6th Nearby
$800
N/A
$880
N/A
$1,080
N/A
 
 
  Tier 4: 7th - 12th Nearby
$425
N/A
$468
N/A
$574
N/A
 
 
  Tier 5: 13th And Greater
$200
N/A
$220
N/A
$270
N/A
 
 
NGPL Mid-Continent Basis Swap (NL)
  Tier 1: 1st Nearby
$925
$1,200
$1,018
$1,320
$1,249
$1,620
$250
$250
  Tier 2: 2nd Nearby
$475
$500
$523
$550
$641
$675
 
 
  Tier 3: 3rd - 6th Nearby
$675
N/A
$743
N/A
$911
N/A
 
 
  Tier 4: 7th - 12th Nearby
$275
N/A
$303
N/A
$371
N/A
 
 
  Tier 5: 13th And Greater
$175
N/A
$193
N/A
$236
N/A
 
 


NYMEX Division Intra-Commodity Spread Margin Rates for San Juan(NJ) and NGPL Mid-Continent(NL) Natural Gas Basis Swaps
 
Natural Gas Basis Financial
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Customer Initial Margin
San Juan Basis Swap (NJ)
New
Old
New
Old
New
Old
Tier 1: 1st Nearby
$25
$25
$28
$28
$34
$34
Tier 2: 2nd Nearby
$25
$25
$28
$28
$34
$34
Tier 3: 3rd - 6th Nearby
$25
$25
$28
$28
$34
$34
Tier 4: 7th - 12th Nearby
$25
$25
$28
$28
$34
$34
Tier 5: 13th And Greater
$25
$25
$28
$28
$34
$34
NGPL Mid-Continent Basis Swap (NL)
Tier 1: 1st Nearby
$25
$25
$28
$28
$34
$34
Tier 2: 2nd Nearby
$25
$25
$28
$28
$34
$34
Tier 3: 3rd - 6th Nearby
$25
$25
$28
$28
$34
$34
Tier 4: 7th - 12th Nearby
$25
$25
$28
$28
$34
$34
Tier 5: 13th And Greater
$25
$25
$28
$28
$34
$34


Current systems calculate the margin requirement for spread positions by first determining the "Scan Risk" and then multiplying the number of spreads by a rate set by the Exchange. Scan Risk is determined by netting the outright margin required for each leg of a spread. Spreading between differently margined contracts results in a higher spread margin than between equally margined contracts. Below is provided an example where the legs of a spread are margined differently.

Scan Risk Example at Clearing Member Rates
A spread consisting of one NJ leg in Tier 1 and another in Tier 4 will have its requirement (at the clearing member rates) calculated at $400 starting on Wednesday, November 9, 2005.

One Long Tier 1 NJ (1 * $800) = $800
One Short Tier 4 NJ (1 * $425) = $425
Net Scan Risk   = $375
Spread Rate (1* $ 25) = + $25
Total Requirement   = $400


Summary  
Clearing Member (Maintenance Margin): $400
Member Customer (Initial Margin): $440
Non-Member Customer (Initial Margin): $540


This notice supersedes all previous notices regarding margin rates and tiers for the Natural Gas Basis swap contracts listed above.
Should you have any questions or require any further information, please contact exchangeinfo@nymex.com