Odaily Planet Daily News Cryptocurrency exchange Kraken is acquiring TradeStation Crypto, a digital asset-focused division of online brokerage TradeStation, to expand its regulatory license in the United States. A Kraken spokesperson said via email: "We can confirm that Kraken recently purchased TradeStation's crypto business. This transaction is part of our efforts to accelerate our business in the United States and will bring further growth and new product opportunities to Kraken in the United States." The company declined to disclose the amount paid. The acquisition had not been publicly disclosed before.