Last updated November 6, 2026.
Option Assignment Calculator (the "site") is provided for educational and informational purposes only. By using the site, you acknowledge and agree to these Terms of Use. If you do not agree, do not use the site.
Nothing on the site is financial, investment, legal or tax advice, or a recommendation or solicitation to buy, sell or hold any security, option or other financial instrument. The operator is not a registered investment adviser, broker-dealer or financial professional, and no advisory, fiduciary or professional relationship is created by your use of the site.
All figures come from mathematical models that rely on assumptions and simplifications. They are estimates, not predictions or guarantees, and may differ materially from actual outcomes, including whether and when an option is assigned.
Market data is obtained from third parties, is delayed, and may be incomplete, inaccurate or unavailable. It is not suitable for trading decisions. Calculations, code and content may contain errors or omissions, and the site may change or become unavailable at any time without notice.
You are solely responsible for every trading and investment decision you make and for evaluating the accuracy, completeness and usefulness of anything on the site. Nothing on the site is a substitute for information from your broker or advice from a qualified professional.
The site and all of its content and output are provided "as is" and "as available", without warranties of any kind, express or implied, including warranties of accuracy, completeness, reliability, timeliness, merchantability, fitness for a particular purpose and non-infringement.
To the fullest extent permitted by law, the operator is not liable for any loss or damage of any kind, including trading or investment losses, lost profits, losses from assignment or exercise, and direct, indirect, incidental, consequential, special, exemplary or punitive damages, arising from or related to your use of, inability to use, or reliance on the site or its output, even if advised of the possibility of such damages.
You release the operator from, and agree to hold the operator harmless against, any claim, loss, liability or expense arising from your use of the site or your violation of these terms.
Options trading involves substantial risk and is not suitable for all investors. Losses can exceed the premium received. These risks are described in the OCC's Characteristics and Risks of Standardized Options.
The site links to and uses data from third parties, including CBOE. The operator does not control and is not responsible for third-party content, data or services, and is not affiliated with or endorsed by CBOE.
These terms may be updated at any time; continued use of the site means acceptance of the current version. If any provision is found unenforceable, it will be enforced to the maximum extent permissible and the remaining provisions remain in full effect.