You can open a Fidelity brokerage account without a minimum investment. The same goes for a Fidelity Go robo-advisor account. Fidelity Personalized Planning & Advice requires a $25,000 account minimum. Wealth Management requires a $250,000 minimum deposit. Its highest tier, Private Wealth Management, requires a $2,000,000 account minimum and a total of $10,000,000 or more in total investable assets.