How do I change my security question?

You can change your security question by logging in to your account at manage.tastytrade.com. After signing in, navigate to My Profile→Security. 

Location of My Profile→Security

You can look up your security question in the My Security Question section, located below the My Username section. The answer to your security question does not display. To edit your security question, click Edit, as illustrated below.

Location of the Security Question section in the Security settings menu