A logo is displayed on the Marcus by Goldman Sachs Group Inc. floor of the bank's headquarters in New York.

For decades, you had to have at least $10 million for Goldman Sachs to manage your money. Now, the bank is preparing digital wealth management for the little guy.

The firm is working on a digital wealth product, its first new offering under a Marcus brand that so far has had high-interest savings accounts and personal loans. Ahead of that move, Goldman said Monday it was moving Marcus into its investment management division, home to businesses that manage wealth for the ultra wealthy (who average $50 million in holdings) and create mutual funds and ETFs.

Goldman Sachs is broadening beyond the wealthy families, hedge funds and governments that have historically been its clients. In May, then-President David Solomon outlined his vision for the bank's retail finance arm, which could eventually offer wealth management, checking accounts, credit cards and mortgages. In two years, Marcus has swelled to $4 billion in loans and $29 billion in deposits by allowing ordinary consumers to earn better-than-average interest or consolidate credit-card debt.