Online broker Interactive Brokers Group Inc. is adding four cryptocurrencies to its trading platform, which gained attention during President Donald Trump's embrace of the digital asset field. According to a statement released by the company based in Greenwich, Connecticut on Wednesday, customers will be able to access Solana, Cardano, XRP and Dogecoin tokens on the same platform used for stocks, options, futures, currencies, bonds and mutual funds. The company already offers Bitcoin, Ethereum, Litecoin and Bitcoin Cash trading.