Your acceptance of all cookies will permit robust site functionality. If you don't allow cookies, some features and functionality of OCC's site may not operate as expected. If you do not choose either cookie setting for our site, or if you close this window, this message will continue to display on each page you visit. Cookie settings can be controlled in your Internet browser to automatically reject some forms of cookies. For more details on cookies this site uses, see our OCC Site Cookies page. In addition to using cookies, we retain other information, including your Internet Protocol (IP) address, for the purposes listed in the Privacy Policy.

New Functionality: What-If Margining

To answer the demand for fast, risk-enabled decision-making, OCC is planning to release enhanced functionality for its What-If Margining Simulation in January 2023.

As part of the Renaissance Initiative, the functionality enhancements will allow OCC to deliver a more efficient, user-friendly and free margin calculation tool that can be seamlessly built into its members dashboards and platforms.

By upgrading its legacy risk application tool, firms will for the first time have an Application Programming Interface (API)-based approach for submitting their portfolio of positions. Similar to the existing risk application in ENCORE today, the What-If Margining Simulation will create an opportunity for members to view theoretical types of margin scenarios for analysis and understand how margin requirements change as positions change.

Click here to view more information about OCC’s What-If Margining Simulation, and here for the guide.

Testing Information 

  • To ensure preparedness ahead of launch, OCC plans to schedule targeted testing with designated clearing members beginning in November 2022 and continuing through January 2023.

  • At launch, the existing risk application will continue to be available with the enhanced What-If Margining Simulation. The legacy application will then be decommissioned in 2024 with the launch of the new clearing platform.

Certification and Connectivity 

  • Certification will be required for all clearing members. To test in the certification environment, please fill out this form.


Contact Information 


All dates are subject to change.

This web site discusses exchange-traded options issued by The Options Clearing Corporation. No statement in this web site is to be construed as an endorsement, recommendation or solicitation to purchase or sell a security, or to provide investment advice. Options involve risk and are not suitable for all investors. Prior to buying or selling an option, a person must receive a copy of the disclosure document, Characteristics and Risks of Standardized Options. Individuals should not enter into option transactions until they have read and understood this document. To obtain copies, contact your broker, any exchange on which options are traded, or The Options Clearing Corporation, 125 S. Franklin Street, Suite 1200, Chicago, IL 60606 ([email protected]).