How Does Fidelity make money with no fees?

How Does Fidelity make money with no fees?

If you keep any spare cash in your brokerage account, Fidelity will make money investing that cash and keeping most of the interest. Brokers make a lot of money on the spare cash you keep in your account — it’s one of the main ways the free brokerage service Robinhood makes money. Aug 10, 2018

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