Metaplanet (MTPLF), the largest corporate holder of Bitcoin in Japan, unveiled changes to its capital structure on Thursday centering on the issuance of preferred shares. The Bitcoin-buying firm plans to offer “Mars” and “Mercury” to investors as an additional source of funding, while making regular dividend payments, according to a regulatory filing. Mars will feature a fluctuating dividend rate that aims to minimize the product’s volatility on secondary markets, Dylan LeClair, Metaplanet’s head of Bitcoin ...