CNBC Select has chosen the best no-commission apps on the market in a variety of categories, from mutual funds to fractional shares. (See our methodology for more information on how we made this list.

Quickly compare all the best demo trading accounts. Find the demo trading apps that offer the most security, lowest fees, and ...

Explore the pros and cons of commission-free stock trading. Find out how brokerages profit and what this might mean for order execution and investor protection.