How does one go about funding their brokerage account with a credit card?
Depends on the brokerage house, its clearing firm and/or the principals of the firm. “Know your customer”. A medium-sized brokerage firm with a physical office (not online like Ameritrade) may choose to accept a check issued on a credit card belonging to the owner of the account. If the check is from a 3rd party, it may also choose to accept a check made out to the owner of an account upon the person endorsing the back and making it (on back side) payable to the clearing firm with acc. no. It gets tougher if the clearing firm (not the brokerage house) is owned by a bank- that complicates matters. A brokerage firm, as a rule, does not accept a check drawn on a credit card for an initial trade excpet under special circumstances.