Nymex offers electronic options trading on oil, natural gas, gold and silver

The options will be available for trading on CME Globex from 6:00pm Sundays through to 5:15pm Fridays New York time, with a 45-minute break between 5:15pm and 6:00pm.

To ensure orderly exercise procedures, no expiring options will be accepted for trading after the close of open outcry trading on the day of expiration.

For crude oil options, expiration months will include the balance of the current year and next consecutive year, with additional June/December months through to 2015. Natural gas