KEY POINTS
  • Interactive Brokers announced a new product that will provide commission-free stock trades.
  • The announcement pressured shares of rival retail brokerage firms TD Ameritrade, Charles Schwab and E-Trade Financial.
Pedestrians pass in front of a TD Ameritrade location in San Francisco, California.

Interactive Brokers will now make any amount of your stock trades without commission fees, threatening rival brokerage firms.

Shares of retail brokerage firms TD Ameritrade, Charles Schwab, and E-Trade Financial all traded down Thursday afternoon upon the announcement.