According to Bloomberg, Japan has been considering whether to follow an overseas move and allow ETFs to invest in cryptocurrencies, which has attracted the attention of mainstream Japanese institutions. Some Japanese companies have said that the discussion should focus on major tokens such as bitcoin and ether, with a series of proposals from groups including major trust banks such as Mitsubishi UFJ and Sumitomo Mitsui, cryptocurrency exchanges such as bitFlyer, and brokerages such as Nomura and SBI Securities arguing that the large market capitalization and "stable returns" of these cryptocurrencies make them suitable for investors to accumulate assets in the medium to long term. Japanese Financial Services Agency officials said last month that the agency would conduct a review of its approach to cryptocurrency regulation, an assessment that has no firm conclusions and may take some time to complete.