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Naked Option Margin Calculator

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Estimate margin required for selling naked options. I use the formula at Interactive Brokers to estimate your margin.

There are two numbers calculated:
- Gross Maintenance Margin. This is what you have to keep in your brokerage account.
- Net Margin Required. This is your net cash requirement.

Broad based indexes use 15% vs 20% in the margin calculation

Underlying Type
Underlying Price $
Option Contracts
Option Strike $
Option Price $



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