Notice to Members
Notice No. 389
07/28/2008
Margin Rate and Tier Changes for Natural Gas Futures, Henry Hub Swap Futures (NN), Natural Gas Penultimate, Natural Gas Last Day, Globex Natural Gas miNY Futures, Henry Hub Swing Swap Futures, and Henry Hub Penultimate Swap Contracts
EFFECTIVE DATE: Tuesday, July 29, 2008 (close of business)

FUTURES CONTRACTS:
Natural Gas Futures, Henry Hub Swap Futures, Natural Gas (Penultimate) Financial Futures, Natural Gas (Last Day) Financial Futures, NYMEX miNY ™ Natural Gas Futures, Henry Hub Swing Swap Futures, and Henry Hub Penultimate Swap Futures Contracts
CONTRACT MONTHS: All Months


NG/NN/NP/HH/HP/QG Intra-Commodity Spread and Scan Tiers
 
Tiers
New
Old
1
1st Nearby
1st Nearby
2
2nd Nearby
2nd Nearby
3
3rd - 7th Nearby
3rd Nearby
4
8th- 14th Nearby
4th- 8th Nearby
5
15th– 19th Nearby
9th– 15th Nearby
6
20th– 31st Nearby
16th– 20th Nearby
7
32nd–43rd Nearby
21st– 32nd Nearby
8
44th– 55th Nearby
33rd– 44th Nearby
9
Greater than 55th Nearby
Greater than 44th Nearby


NYMEX Division Outright (Scan) Margins on Natural Gas Futures (NG), Natural Gas Penultimate (HP) and Natural Gas Last Day (HH)
 
Tiers
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Customer Initial Margin
New
Old
New
Old
New
Old
1
$8,250
$8,250
$9,075
$9,075
$11,138
$11,138
2
$8,250
$8,250
$9,075
$9,075
$11,138
$11,138
3
$8,750
$9,000
$9,625
$9,900
$11,813
$12,150
4
$5,500
$9,250
$6,050
$10,175
$7,425
$12,488
5
$5,750
$6,000
$6,325
$6,600
$7,763
$8,100
6
$4,250
$6,000
$4,675
$6,600
$5,738
$8,100
7
$4,000
$4,750
$4,400
$5,225
$5,400
$6,413
8
$3,750
$4,500
$4,125
$4,950
$5,063
$6,075
9
$3,500
$4,000
$3,850
$4,400
$4,725
$5,400


NYMEX Division Outright (Scan) Margins on Henry Hub Swap Futures (NN) Henry Hub Penultimate Swap (NP) and GLOBEX miNY Natural Gas (QG)
 
Tiers
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Customer Initial Margin
New
Old
New
Old
New
Old
1
$2,063
$2,063
$2,269
$2,269
$2,784
$2,784
2
$2,063
$2,063
$2,269
$2,269
$2,784
$2,784
3
$2,188
$2,250
$2,406
$2,475
$2,953
$3,038
4
$1,375
$2,313
$1,513
$2,544
$1,856
$3,122
5
$1,438
$1,500
$1,581
$1,650
$1,941
$2,025
6
$1,063
$1,500
$1,169
$1,650
$1,434
$2,025
7
$1,000
$1,188
$1,100
$1,306
$1,350
$1,603
8
$938
$1,125
$1,031
$1,238
$1,266
$1,519
9
$875
$1,000
$963
$1,100
$1,181
$1,350


NYMEX Division Outright (Scan) Margin on Henry Hub SwingSwap Futures (SN)
 
Tiers
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Customer Initial Margin
New
Old
New
Old
New
Old
1
$2,063
$2,063
$2,269
$2,269
$2,784
$2,784




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 2 will have its requirement (at the clearing member rates) calculated at $ 750 starting on Tuesday, July 29, 2008.

One Long Tier 1 NG (1 * $ 8,250) = $8,250
One Short Tier 2 NG (1 * $ 8,250) = $8,250
Net Scan Risk ($8,250-$8,250) = $0
Spread Rate (1* $ 750) = + $750
Total Requirement   = $750
       
Summary      
Clearing Member (Maintenance Margin):     $750
Member Customer (Initial Margin):     $825
Non-Member Customer (Initial Margin):     $1,013


This notice supersedes all previous notices regarding margin rates and for Natural Gas Futures, Henry Hub Swap Futures, Natural Gas (Penultimate) Financial Futures, Natural Gas (Last Day) Financial Futures, NYMEX miNY™ Natural Gas Futures, Henry Hub Swing Swap Futures, and Henry Hub Penultimate Swap Futures Contracts.
Should you have any questions or require any further information, please contact exchangeinfo@nymex.com