How does aggregation work?
After logging on to Vanguard.com, go to the Outside Investments section on the Accounts & Activity page. Then, select the financial institutions with which you have online relationships. Enter your user credentials for the institutions and tell us about the accounts you have there. These accounts will appear under Accounts & Activity, the values will be refreshed as frequently as daily, and your account information will be available for you to use with Vanguard.com’s advice and analysis tools.