NEW YORK (Reuters) - Interactive Brokers Group on Monday said it launched low-fee cryptocurrency trading on its platform, making it the latest online retail brokerage to add digital assets to its offerings. U.S. clients of the brokerage will now be able to trade and custody bitcoin, ethereum, litecoin and bitcoin cash alongside stocks, options, futures, bonds, mutual funds and exchange-traded funds, the company said.“As financial markets evolve, sophisticated individual and institutional investors are increasingly seeking out allocations to digital currencies as a means of achieving their financial objectives,” said Chief Executive Officer Milan Galik. Chairman Thomas Peterffy said in June that Interactive Brokers, which caters to active traders and sophisticated investors, would launch trading in cryptocurrencies by the end of the summer as the nascent asset class becomes more mainstream. Other brokers, including Robinhood Markets Inc and TradeStation also provide cryptocurrency trading, while Charles Schwab Corp and Fidelity currently offer access to bitcoin futures. Crypto-trading commissions at Interactive Brokers will be 0.12% to 0.18% of trade value, depending on monthly volume, with no added spreads, markups, or custody fees, the New York-based company said. Interactive Brokers said it partnered with Paxos Trust Company, a regulated provider of cryptocurrency services that also works with companies like PayPal on digital asset trading, to enable the new service.