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Margin Calculators

Margin Calculators


CBOE Margin Calculator for Strategy-based Margins

This online calculator contains a description of CBOE's strategy-based margin requirements for various positions in put options, call options, combination put-call positions and underlying positions offset by option positions. The equity and index option strategies available for selection in this calculator are among those most widely used by investors. Margin amounts computed by this calculator reflect exchange-minimum requirements of the Chicago Board Options Exchange. Margin amounts required by specific brokerage firms may be higher. Further, this calculator's computations reflect only the Exchange's initial margin requirements; ongoing maintenance margin requirements may be necessary, and are indicated where appropriate but not calculated.

The Options Clearing Corporation's Customer Portfolio Margin page has a link to an online position editor.






This website is only a brief summary and should only serve as a supplement to careful review of relevant CBOE rules and federal securities laws dealing with margin requirements. The requirements explained here are based on publication date rules and regulations, and therefore, subject to change. This website should be used as a reference document and is not intended to be an all-encompassing restatement of Federal Reserve Board and Exchange margin rules. Brokerage firms may require customers to post higher margins than the minimum margins specified on this website. For more information on margin requirements for options, please contact CBOE's Department of Member Firm Regulation at (312) 786-7718. In addition please see the discussion of margins in the Characteristics and Risks of Standardized Options publication, Chapter 12 of the rules of the CBOE, and also the 41-page CBOE Margin Manual.

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