Millionaires can insure their money by depositing funds in FDIC-insured accounts, NCUA-insured accounts, through IntraFi Network Deposits, or through cash management accounts. They may also allocate some of their cash to low-risk investments, such as Treasury securities or government bonds. However, they might not worry as much about insurance and choose to keep their money in stocks, real estate, or other vehicles. It’s a very personal decision.