1. Short title This Act may be cited as the Options Markets Stability Act . 2. Rulemaking Within 180 days of the date of enactment of this Act, the Board of Governors of the Federal Reserve System, the Federal Deposit Insurance Corporation, and the Comptroller of the Currency shall, jointly, issue a proposed rule, and finalize such rule within 360 days of the date of enactment of this Act, to adopt a methodology for calculating the counterparty credit risk exposure, at default, of a depository institution, depository institution holding company, or affiliate thereof to a client arising from a guarantee provided by the depository institution, depository institution holding company, or affiliate thereof to a central counterparty in respect of the client's performance under an exchange-listed derivative contract cleared through that central counterparty pursuant to the risk-based and leverage-based capital rules applicable to depository institutions and depository institution holding companies under parts 3, 217, and 324 of title 12, Code of Federal Regulations. In issuing such rule, the Board of Governors of the Federal Reserve System, the Federal Deposit Insurance Corporation, and the Comptroller of the Currency shall consider— (1) the availability of liquidity provided by market makers during times of high volatility in the capital markets; (2) the spread between the bid and the quote offered by market makers; (3) the preference for clearing through central counterparties; (4) the safety and soundness of the financial system and financial stability, including the benefits of central clearing; (5) the safety and soundness of individual institutions that may centrally clear exchange-listed derivatives or options on behalf of a client, including concentration of market share; (6) the economic value of delta weighting a counterparty’s position and netting of a counterparty’s position; (7) the inherent risk of the positions