5 Biggest Online Brokers in 2021

2. InteractiveBrokers (NASDAQ:IBKR)

It may be near the top of our list right now, but the online broker has certainly taken a major reputational hit during the GameStop story as it also stopped allowing its users to purchase GameStop stock, while also raising margin requirements for certain stocks. This certainly does not bode well for a 43 year old major company which has 24 offices in 14 countries and revenues of close to $2 billion. We will have to wait and see to find out the true impact on the company, though it is entirely possible that a company of this size and stature can weather the storm and grow even further.