How concentrated is my options portfolio in a single expiration date?

How this is calculated

• Each expiration date's total equals the sum of the position values you log under it. Concentration for a date equals that date's total divided by your total logged value.
• Your largest single-expiration concentration drives the score. Under 40% in any one expiration reads as Spread Across Expirations, 40% to 70% reads as Concentrated, and above 70% reads as Highly Concentrated.
• Grouping options by expiration date shows whether your theta decay, gamma risk, and assignment risk are concentrated around one specific date rather than spread across time.
• A large concentration in one expiration means a single earnings report, economic release, or sharp move on that date affects a disproportionate share of your open options risk at once.
• This tool only groups by the expiration date you enter. It doesn't distinguish between different underlyings expiring the same day, which can compound the concentration further.
• This tracker only exists in your browser tab for this session and resets when you close or reload the page.