Yes, access to your Cash Reserve balances that are part of a pledged legal account can be impacted by opening an SBLOC. This is because Cash Reserve balances are part of the same legal account type as your taxable investing account. Thus, a withdrawal from your Cash Reserve could decrease your Daily Allowable Distribution (DAD) and potentially even cause a maintenance call.
Your Daily Allowable Distribution (DAD) is the maximum amount you can withdraw from your pledged account(s) on a given day.
