What Is a “Margin Requirement” for Writing Options?

A margin requirement is the amount of collateral (cash or securities) that an option writer must deposit and maintain in their brokerage account to cover potential losses. Since writing naked options carries significant risk, the broker requires margin to ensure the writer can meet their obligations if the option is exercised against them.

The requirement varies based on the underlying asset and the specific strategy.

How Does Cash-Settlement Affect the Naked Option Writer’s Obligation?
What Is Margin Requirement in the Context of Writing Naked Options?
Explain the Concept of “Assignment” for a Covered Call Writer
How Is Margin Used in Option Writing?
What Is the Definition of ‘Margin’ in the Context of Options Trading?
What Is the Risk of Early Exercise for the Writer of an American Option?
How Does the Process of ‘Rehypothecation’ Affect a Prime Broker’s Client Assets?
How Does Selling (Writing) a Covered Call Differ from Selling a Naked Call?

Glossar