SBI Securities and Rakuten Securities are building in-house Bitcoin and Ethereum investment trusts for retail investors in Japan, and SBI Global Asset Management is targeting about 5 trillion yen in assets within three years of launch. The products would let customers gain crypto exposure through existing brokerage accounts instead of opening separate exchange accounts or wallets. Nikkei reported that Japan's Financial Services Agency is reportedly weighing rules that would let investment trusts and exchange-traded funds hold crypto under the Investment Trust Act.