Update 6-25-24: I originally posted this in August of 2023. At that time, the Cash Management Account (CMA) at Fidelity only allowed you to put your "core position" in an FDIC-insured bank account that was paying around 2.7%. Since Fidelity's brokerage account's core position was a Money Market paying around 4.9%, that was my recommendation. … Continue reading Fidelity: One Account to Rule Them All (including checking and savings)? →