Metaplanet, the Japanese Bitcoin treasury company and Asia’s largest corporate holder of BTC, has agreed to acquire all outstanding shares of Siiibo Securities Co., Ltd. for approximately 2 billion yen ($13.11 million). The move is the first major step under its “Project Nova” strategy, which aims to build a Bitcoin-centered financial ecosystem in Japan.
Siiibo Securities holds a Type I Financial Instruments Business license and operates an online platform focused on corporate bonds, having supported over 40 companies and more than 100 bond issuances. Under the deal, Siiibo will become a wholly owned subsidiary and be renamed Metaplanet Securities Inc. The share transfer agreement was signed on June 12, 2026, with the transaction expected to close on July 13 and rebranding completed by the end of August 2026.
Metaplanet, which held 40,177 BTC as of May 31, plans to use the acquired platform to develop and distribute Bitcoin-linked yield products, including Bitcoin-linked bonds and digital securities such as security tokens. The company may also draw on a Bitcoin-collateralized credit facility of up to $500 million to fund the purchase, supplementing its cash reserves and borrowings.
CEO Simon Gerovich called the acquisition “hard to overstate,” noting that Japanese households hold roughly $7.4 trillion in cash and low-yield deposits, and that the shift from deflation to inflation is driving demand for yield. Metaplanet’s stock price rose over 3.6% on the news, though its shares remain down nearly 32% monthly due to broader Bitcoin price declines.
