We have a MasterCard linked to the HSA. Showing that in an investment account does not feel right. What I did:1. Have a Savings Account for the HSA. Deposits from paycheck, payments to doctors, pharmacy et.al. are in there.2. Have an Investment account to hold the securities.When investing, transfer from Savings to Investment. Reverse when withdrawing.This keeps the investment part separate and clearly defines what is happening in real life.