Notice to Members
Notice No. 385
10/15/2004
New Margin Rates and Tiers for Henry Hub Penultimate Swap Futures (NP) Contracts

EFFECTIVE DATE: Monday, October 18, 2004 (close of business)

FUTURES CONTRACTS: Henry Hub Penultimate Swap Contracts

CONTRACT MONTHS: All Natural Gas Contract Months


NOTE: The code NP was used in the past for the NYMEX Permian Basin Natural Gas Futures contract which has been delisted. (See Notice to Members # 04-380)


NYMEX Division Outright (Scan) Margins on Henry Hub Penultimate Swap (NP)

Tiers
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Initial Margin
New
New
New
1 (1st Nearby)
$1,625
$1,788
$2,194
2 (2nd Nearby)
$1,500
$1,650
$2,025
3 (3rd Nearby)
$1,500
$1,650
$2,025
4 (4th Nearby)
$1,500
$1,650
$2,025
5 (5th Nearby)
$1,375
$1,513
$1,856
6 (6th Nearby)
$875
$963
$1,181
7 (7th – 14th Nearby)
$750
$825
$1,013
8 (15th – 29th Nearby)
$375
$413
$506
9 (Greater than 29th Nearby)
$250
$275
$338



NYMEX Division Intra-Commodity Spread Margins on Henry Hub Penultimate Swap (NP)

Tiers
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Initial Margin
New
New
New
1 (1st Nearby)
$250
$275
$338
2 (2nd Nearby)
$188
$206
$253
3 (3rd Nearby)
$188
$206
$253
4 (4th Nearby)
$188
$206
$253
5 (5th Nearby)
$125
$138
$169
6 (6th Nearby)
$125
$138
$169
7 (7th – 14th Nearby)
$125
$138
$169
8 (15th – 29th Nearby)
$125
$138
$169
9 (Greater than 29th Nearby)
$63
$69
$84


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 NP leg in Tier 1 and another in Tier 7 will have its requirement (at the clearing member rates) calculated at $1,125 starting on Monday, October 18, 2004.

One Long Tier 1 NP (1 * $1,625) = $1,625
One Short Tier 7 NP (1 * $ 750) = $ 750
Net Scan Risk ($1,625-$750) = $ 875
Spread Rate (1* $250) = + $ 250
Total Requirement   = $1,125

Summary  
Clearing Member (Maintenance Margin): $1,125
Member Customer (Initial Margin): $1,238
Non-Member Customer (Initial Margin): $1,519

Should you have any questions regarding these changes, please contact Arthur McCoy at (212) 299-2928 or William Doherty at (212) 299-2925.
Should you have any questions or require any further information, please contact exchangeinfo@nymex.com