[bombcar]

Yup! Most just do it via a small internal FDIC bank (it's easier for them to have a bank for other reasons anyway):

https://www.tdameritrade.com/investment-products/cash-soluti...

https://www.fidelity.com/cash-management/atm-debit-card

Even vanguard can do it, but they don't LIKE to: https://investor.vanguard.com/investor-resources-education/f...