Notice to Members
Notice No. 453
12/05/2003
Margin Rate and Tier Changes for Natural Gas Futures (NG), Henry Hub Swap (NN), and Natural Gas e-miNY (QG) Contracts
Effective Date: Monday December 8, 2003 (close of business)
Futures Contracts: Natural Gas, Henry Hub Swap, and e-miNY Natural Gas Contracts
Contract Months: All Natural Gas Contract Months

Natural Gas Scan and Intra-Commodity Spread Tiers
Tiers
New
Old
1
1st Nearby
1st Nearby
2
2nd - 3rd Nearby
2nd Nearby
3
4th - 10th Nearby
3rd - 6th Nearby
4
11th - 15th Nearby
7th - 12th Nearby
5
Greater than 15th Nearby
Greater than 12th Nearby

NYMEX Division Outright Margins on Natural Gas Futures (NG)
 
Clearing Member /
Maintenance Margin
Member Customer
Initial Margin
Non-Member
Customer Initial Margin
 
New
Old
New
Old
New
Old
Tier 1 - 1st Nearby
$7,000
$5,000
$7,700
$5,500
$9,450
$6,750
Tier 2: 2nd - 3rd Nearby
$7,000
$5,000
$7,700
$5,500
$9,450
$6,750
Tier 3: 4th - 10th Nearby
$5,500
$4,500
$6,050
$4,950
$7,425
$6,075
Tier 4: 11th - 15th Nearby
$4,500
$4,500
$4,950
$4,950
$6,075
$6,075
Tier 5: Greater than 15th Nearby
$2,500
$2,500
$2,750
$2,750
$3,375
$3,375

NYMEX Division Outright Margins on Henry Hub Swap Futures (NN)
 
Clearing Member /
Maintenance Margin
Member Customer
Initial Margin
Non-Member
Customer Initial Margin
 
New
Old
New
Old
New
Old
Tier 1 - 1st Nearby
$1,750
$1,250
$1,925
$1,375
$2,363
$1,688
Tier 2: 2nd - 3rd Nearby
$1,750
$1,250
$1,925
$1,375
$2,363
$1,688
Tier 3: 4th - 10th Nearby
$1,375
$1,125
$1,513
$1,238
$1,856
$1,519
Tier 4: 11th - 15th Nearby
$1,125
$1,125
$1,238
$1,238
$1,519
$1,519
Tier 5: Greater than 15th Nearby
$625
$625
$688
$688
$844
$844

NYMEX Division Outright Margins on Natural Gas e-miNY Futures (QG)
 
Clearing Member /
Maintenance Margin
Member Customer
Initial Margin
Non-Member
Customer Initial Margin
 
New
Old
New
Old
New
Old
Tier 1 - 1st Nearby
$3,500
$2,500
$3,850
$2,750
$4,725
$3,375
Tier 2: 2nd Nearby
$3,500
$2,500
$3,850
$2,750
$4,725
$3,375

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 NG leg in Tier 2 and another in Tier 3 will have its requirement (at the clearing member rates) calculated at $2,500 starting on Friday December 5, 2003.
One Long Tier 2 NG
(1 * $7,000)
=
$7,000
One Short Tier 3 NG
(1 * $5,500)
=
-
$5,500
Net Scan Risk
($7,000-$5,500)
=
$1,500
Spread Rate
(1* $1000)
=
+
$1,000
Total Requirement
=
$2,500
 
Summary
Clearing Member (Maintenance Margin):
$2,500
Member Customer (Initial Margin):
$2,750
Non-Member Customer (Initial Margin):
$3,375

This notice supersedes all previous notices regarding margin rates and tiers for Natural Gas Futures, Henry Hub Swap, and Natural Gas e-miNY futures contracts.
Should you have any questions or require any further information, please contact exchangeinfo@nymex.com