Three Samsung affiliates are spending 612.8 billion won ($408 million) to buy a 4% stake in Dunamu, the company behind South Korea’s dominant crypto exchange Upbit, in a move aimed at accelerating their expansion into digital asset and blockchain-related businesses, according to Korea Herald.

Samsung Securities, the brokerage arm of Samsung Group, is taking a 2% stake. Samsung SDS, the conglomerate’s IT services division, and Samsung Card, its payments subsidiary, are each picking up 1%.

Together, they’re acquiring 1.39 million shares from a group of Kakao-affiliated investment vehicles in an all-cash block sale. The transaction is set to close June 19.

The sellers include Kakao Investment, Kakao Ventures, the…