How to setup brokerage account in QuickBooks, non profit edition

Quickbooks nor any other accounting software is designed to track investment valuation changes as monthly market fluctuations have zero effect on income. You are gaining an other current asset whose basis is valuation on date received. That value does not change. Here is one scenario.

Set up one other  asset account for Vanguard. Post the $100 from whatever funds you used to open the account. Record the gift of stock as donation income and into a sub account of the Vanguard account. Monthly record income and where the income lands. If it is issued as a check you record a deposit to banking. If it is kept in the Vanguard account then you post it as a deposit to that account. If it is used to reinvest then you add to the stock asset.