Contract Specifications |Chart & Quick Quote
Component Issues, Weightings and Index Divisor | Original Index Components

PHLX Oil Service Sector^SM (OSX^SM)

The PHLX Oil Service Sector^SM (OSX^SM) is a price-weighted index composed of 15 companies that provide oil drilling and production services, oil field equipment, support services and geophysical/reservoir services. The OSX was set to an initial value of 75 on December 31, 1996; options commenced trading on February 24, 1997.

Contract Specifications*

Trading Symbol: OSX

Alternate Symbol: OSZ
If you are unable to obtain a listing for a strike price under the trading symbols, use the alternate symbols.

Settlement Value Symbol: OSV

CUSIP® Number: 69333V

Exercise Style: European - may be exercised only on the last business day before expiration.

Expiration Date: Saturday following the third Friday of the expiration month.

Expiration Cycle: Three months from the March, June, September, December cycle plus two additional near-term months (five months at all times).

Settlement: Cash

Settlement Value for Expiring Contracts: Based on the opening prices of the component stocks on the last Expiring Contracts: trading day prior to expiration (usually a Friday). The settlement value is disseminated under the symbol OSV.

Last Trading Day for Expiring Contracts: The last business day (usually a Thursday) before the third Friday of the expiration month.

Index Multiplier: $100 (i.e., one contract = index value x 100)

Index Value Calculation:

Total of all Component Prices

Base Market Divisor

Exercise (Strike) Price Intervals: The Exchange shall determine fixed-point intervals of exercise prices for index options. Generally, the exercise (strike) price intervals will be no less than $5. However, the Exchange may determine to list strike prices at no less than $2.50 intervals if the strike price is less than $200 for listed indexes, and in response to demonstrated customer interest or specialist request.

Premium Quotation: One point = $100. Thus a premium quote of 2 is $200. The minimum change in a premium under 3 is $5.00 and the minimum change in a premium of 3 or greater is $10.00.

Position Limits: 31,500 contracts on the same side of the market. Hedge exemptions are available.

Margin: Uncovered writers must deposit 100% of the option proceeds plus 20% of the aggregate contract value (current index level multiplied by $100) minus the amount by which the option is out-of-the-money, if any. Minimum margin is 100% of the option proceeds plus 10% of the aggregate contract value. Long puts or calls must be paid for in full.

Trading Hours: 9:30 a.m. to 4:00 p.m. EST/EDT (Philadelphia Time)

Issuer and Guarantor: The Options Clearing Corporation (OCC)

PHLX Oil Service Sector^SM, OSX^SM are service marks of the Philadelphia Stock Exchange, Inc.

*Options involve risk and are not suitable for all investors. Prior to buying or selling an option, a person must receive a copy of Characteristics and Risks of Standardized Options (“ODD”). Copies of the ODD are available from your broker, by calling 1-888-OPTIONS, or from The Options Clearing Corporation, One North Wacker Drive, Suite 500, Chicago, IL 60606. The information on this Website is provided solely for general education and information purposes and therefore should not be considered complete, precise, or current. Many of the matters discussed are subject to detailed rules, regulations, and statutory provisions which should be referred to for additional detail and are subject to changes that may not be reflected in the Website information. The Philadelphia Stock Exchange assumes no responsibility for any errors or omissions in the Website. No statement within the Website should be construed as a recommendation to buy or sell a security or to provide investment advice.

Back to Sectors

Products + Marketplace + Exchange + News + Publications + Calendar + Educational +
Site Map + Home + Contact Us + Emergency Info

PHLX Oil Service SectorSM (OSXSM)

Contract Specifications*

PHLX Oil Service Sector^SM (OSX^SM)