SBI Holdings Targets Disruption of Japan’s Prime Brokerage Market with $50M Strategic Stake in U.S. FinTech Clear Street
In a move to modernize Japan’s securities infrastructure, SBI Holdings has announced a strategic partnership with U.S.-based FinTech infrastructure firm Clear Street Group. The agreement includes a $50 million strategic investment by SBI into the New York-based firm and outlines plans to establish a joint venture in Japan.
The deal highlights SBI’s ambition to break the oligopoly currently held by major foreign financial institutions over Japan’s prime brokerage sector. Currently, domestic access to comprehensive prime brokerage services—essential for hedge funds and institutional investors—is limited. The market relies heavily on legacy systems that lack automation and predominantly cater to large-scale market makers, effectively locking out emerging funds and individual investors.
SBI intends to leverage Clear Street’s cloud-native technology to solve these inefficiencies. Clear Street, known for its next-generation clearing and custody platform, utilizes a single, unified system to manage diverse financial assets. This architecture significantly reduces fixed costs, allowing the firm to offer sophisticated prime brokerage services to a wider demographic, including small-to-mid-sized funds and retail investors who have traditionally been underserved.
“This investment is a core component of our growth strategy to evolve our financial ecosystem and expand our overseas foundation,” SBI Holdings stated. The company noted a high strategic affinity between its own operations and Clear Street’s flexible, tech-forward business model.
Under the terms of the alliance, the two companies will proceed with discussions regarding the establishment of a Japanese joint venture. The proposed entity is expected to focus on securities trading, prime brokerage, and digital asset services.
By integrating SBI’s extensive domestic customer base and global network with Clear Street’s infrastructure, the partnership aims to democratize access to institutional-grade financial services in Japan.

