Notice to Members
Notice No. 145
03/25/2003
Margin Rate Change for Natural Gas Futures (NG), Henry Hub Swap (NN), and Natural Gas e-miNY (QG) Contracts
Effective Date: Wednesday, March 26, 2003 (close of business)
Futures Contracts: Natural Gas, Henry Hub Swap, and e-miNY Natural Gas Contracts
Contract Months: Tier 1, Tier 2 and Tier 3 NG and NN, and all QG Contract Months


NYMEX Division Outright Margins on Natural Gas Futures (NG)
 
Clearing Member
Member Customer
Non-Member Customer
 
New
Old
New
Old
New
Old
Tier 1 (1st Nearby Month):
$6,500
$8,000
$7,150
$8,800
$8,775
$10,800
Tier 2 (2nd Nearby Month):
$4,500
$6,000
$4,950
$6,600
$6,075
$8,100
Tier 3 (3rd-6th Nearby Month):
$4,500
$6,000
$4,950
$6,600
$6,075
$8,100
Tier 4 (7th-12th Nearby Month):
$2,500
$2,500
$2,750
$2,750
$3,375
$3,375
Tier 5 (Greater than 12th 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
Member Customer
Non-Member Customer
 
New
Old
New
Old
New
Old
Tier 1 (1st Nearby Month):
$1,625
$2,000
$1,788
$2,200
$2,194
$2,700
Tier 2 (2nd Nearby Month):
$1,125
$1,500
$1,238
$1,650
$1,519
$2,025
Tier 3 (3rd-6th Nearby Month):
$1,125
$1,500
$1,238
$1,650
$1,519
$2,025
Tier 4 (7th-12th Nearby Month):
$625
$625
$688
$688
$844
$844
Tier 5 (Greater than 12th Nearby):
$625
$625
$688
$688
$844
$844

NYMEX Division Outright Margins on Natural Gas e-miNY Futures (QG)
 
Clearing Member
Member Customer
Non-Member Customer
 
New
Old
New
Old
New
Old
Tier 1 (1st Nearby Month):
$2,600
$3,200
$2,860
$3,520
$3,510
$4,320
Tier 2 (2nd Nearby Month):
$1,800
$2,400
$1,980
$2,640
$2,430
$3,240

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 1 and another in Tier 4 will have its requirement (at the clearing member rates) calculated at $5,500 starting on Wednesday, March 26, 2003.
One Long Tier 1 NG (1 * $6,500)
=
$6,500
One Short Tier 4 NG (1 * $2,500)
=
-
$2,500
Net Scan Risk ($6,500-$2,500)
=
$4,000
Spread Rate (1* $1500)
=
+
$1,500
Total Requirement  
=
$5,500

Summary
Clearing Member (Maintenance Margin):   $5,500
Member Customer (Initial Margin):   $6,050
Non-Member Customer (Initial Margin):   $7,425

This notice supersedes all previous notices regarding margins for the NYMEX Natural Gas, NYMEX Henry Hub Swap, and the e-miNYsm Natural Gas futures contracts.
Should you have any questions or require any further information, please contact exchangeinfo@nymex.com