To view your whole account number (for example, 5WC#####), please sign in to your account at tastyworks.com (manage.tastyworks.com), or click here. After signing in, scroll down to the blue "Account Status" area. If you just completed your trading account application and did not see an account number, then that means your application is still processing. An account number will be issued once your account is opened and approved. All of your opened and approved account type(s) and number(s) will list in the Account Status area: