Revolut, the challenger bank founded by a former Credit Suisse banker, has launched a fee-free share dealing services as it ups its challenge to traditional stockbrokers and wealth managers.

The 2015-founded fintech “unicorn”, valued at approximately $1.7 billion, has launched a service which allows its metal card customers to make up to 100 fee-free trades a month in 300 US-listed stocks on the New York Stock Exchange and NASDAQ. Custody fees are 0.01 percent per annum and there are no account minimums. 

The bank is “to begin with” placing a $1000 limit on all orders, with the service to be expanded to its...