Notice to Members
Notice No. 347
09/22/2004
Margin Rate Changes for Natural Gas Futures (NG), Henry Hub Swap Futures (NN) and Natural Gas e-miNY Futures (QG) Contracts
EFFECTIVE DATE: Thursday, September 23, 2004 (close of business)
 
FUTURES CONTRACTS: Natural Gas, Henry Hub Swaps and e-miNY Natural Gas Contracts
   
CONTRACT MONTHS: October ‘04 and November ‘04 Outright Margin for Natural Gas Contracts


NYMEX Division Outright (Scan) Margins on Natural Gas Futures (NG)
Tiers
Clearing Member /
Maintenance Margin
Member Customer
Initial Margin
Non-Member Customer
Initial Margin
New
Old
New
Old
New
Old
1
$5,000
$4,000
$5,500
$4,400
$6,750
$5,400
2
$4,500
$4,000
$4,950
$4,400
$6,075
$5,400
3
$4,500
$4,500
$4,950
$4,950
$6,075
$6,075
4
$4,500
$4,500
$4,950
$4,950
$6,075
$6,075
5
$3,000
$3,000
$3,300
$3,300
$4,050
$4,050
6
$2,000
$2,000
$2,200
$2,200
$2,700
$2,700
7
$2,500
$2,500
$2,750
$2,750
$3,375
$3,375
8
$3,000
$3,000
$3,300
$3,300
$4,050
$4,050
9
$1,000
$1,000
$1,100
$1,100
$1,350
$1,350


NYMEX Division Outright (Scan) Margins on Henry Hub Swap Futures (NN)
Tiers
Clearing Member /
Maintenance Margin
Member Customer
Initial Margin
Non-Member Customer
Initial Margin
New
Old
New
Old
New
Old
1
$1,250
$1,000
$1,375
$1,100
$1,688
$1,350
2
$1,125
$1,000
$1,238
$1,100
$1,519
$1,350
3
$1,125
$1,125
$1,238
$1,238
$1,519
$1,519
4
$1,125
$1,125
$1,238
$1,238
$1,519
$1,519
5
$750
$750
$825
$825
$1,013
$1,013
6
$500
$500
$550
$550
$675
$675
7
$625
$625
$688
$688
$844
$844
8
$750
$750
$825
$825
$1,013
$1,013
9
$250
$250
$275
$275
$338
$338


NYMEX Division Outright (Scan) Margins on Natural Gas e-miNY Futures (QG)
Tiers
Clearing Member /
Maintenance Margin
Member Customer
Initial Margin
Non-Member Customer
Initial Margin
New
Old
New
Old
New
Old
1
$2,500
$2,000
$2,750
$2,200
$3,375
$2,700
2
$2,250
$2,000
$2,475
$2,200
$3,038
$2,700


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 6 will have its requirement (at the clearing member rates) calculated at $4,000 starting on Thursday, September 23, 2004.

One Long Tier 1 NG (1 * $5,000)
=
$5,000
One Short Tier 6 NG (1 * $2,000)
=
$2,000
Net Scan Risk ($5,000-$2,000)
=
$3,000
Spread Rate (1* $ 1000)
=
+
$1,000
Total Requirement  
=
$4,000


Summary
Clearing Member (Maintenance Margin): $4,000
Member Customer (Initial Margin): $4,400
Non-Member Customer (Initial Margin): $5,400


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