While it doesn’t offer as much for beginner traders and new traders, you could host a family office or business portfolio on TradeStation with no problems. In fact, its tools are so good it sells many of them for a fee to professional investors with accounts at other brokers. With an active account at TradeStation, you get those tools for free. Just beware the minimum $2,000 balance or five trades per year to avoid a $95 annual account fee.

1$0.00 commission applies to online U.S. equity trades, exchange-traded funds (ETFs), and options (+ $0.65 per contract fee) in a Fidelity retail account only for Fidelity Brokerage Services LLC retail clients. Sell orders are subject to an activity assessment fee (from $0.01 to $0.03 per $1,000 of principal). There is an Options Regulatory Fee (from $0.03 to $0.05 per contract), which applies to both option buy and sell transactions. The fee is subject to change. Other exclusions and conditions may apply. See Fidelity.com/commissions for details. Employee equity compensation transactions and accounts managed by advisors or intermediaries through Fidelity Clearing & Custody Solutions® are subject to different commission schedules.
The trading products you can purchase using these platforms can include stocks, commodities, derivatives, bonds etc. which can be traded between the traders on the stock market with intermediates such as investment banks, stock exchanges, brokers and market makers. A communication network is set-up between the various intermediates and the traders, which facilitates proper execution of the whole system.