How Does the Exchange Calculate the Risk-Based Margin for a Naked Option?

Exchanges calculate the risk-based margin for a naked (uncovered) option using complex formulas that assess the maximum potential loss under extreme market conditions. This calculation typically involves stress-testing the portfolio against various scenarios, considering factors like implied volatility, the option's moneyness, and the underlying asset's historical volatility.

The goal is to set a margin requirement high enough to ensure the writer can cover their potentially unlimited loss obligation, thus protecting the exchange and the counterparty.

What Is the Difference between a Covered Call and a Naked Call?
How Does Margin Requirements Differ for an Option Buyer versus an Option Writer?
What Is the Difference between a Covered and a Naked Option Writer?
What Is the Role of Stress Testing in a CCP’s Risk Management Framework?
How Does Selling (Writing) a Covered Call Differ from Selling a Naked Call?
What Is the Risk Profile for the Writer of a Naked Crypto Call Option?
What Is the Difference between VAR (Value at Risk) and Stress Testing in Margin Models?
Why Does a Naked Call Option Carry Potentially Unlimited Risk?

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