Metaplanet Inc., Japan’s largest corporate Bitcoin holder, has entered into an agreement to acquire 100% of Siiibo Securities Co., Ltd. in a deal valued at approximately 2.1 billion yen, or roughly $13.1 million, the Tokyo-listed company announced on Friday, June 12.
The acquisition, expected to close on July 13, 2026, marks the first major transaction under “Project Nova” — Metaplanet’s medium- to long-term strategy to build a Bitcoin-centric financial platform in Japan. Following the close, Siiibo Securities will be renamed Metaplanet Securities Inc.
The deal gives Metaplanet something it has not held before: a Type I Financial Instruments Business Operator registration, the license required under Japanese law to structure and distribute financial products to retail investors.
That regulatory standing, combined with Siiibo’s existing customer base and online platform, positions the group to begin offering Bitcoin-linked investment products to individual Japanese investors.
Siiibo Securities was founded in January 2019 and operates an online platform for private placement corporate bonds — a market segment once reserved for institutional investors and high-net-worth individuals.
The company has backed more than 40 issuers and facilitated over 100 bond offerings, building one of the largest track records in Japan’s retail corporate bond space.
The strategic rationale for Metaplanet
Metaplanet held 40,177 BTC as of May 31, 2026, with a net asset value of 457.6 billion yen, making it the third-largest corporate Bitcoin holder in the world and the largest in Asia.
The company has spent the past two years accumulating Bitcoin as a treasury reserve asset, a strategy that has drawn comparisons to Strategy in the United States. Project Nova represents the next phase: converting that treasury into the backbone of a financial services business.
Simon Gerovich, Metaplanet’s President and CEO, framed the acquisition as a structural shift.
“We view Bitcoin not as a treasury reserve asset, but as the foundation of the next generation of financial ecosystems,” Gerovich said in the press release. “Siiibo Securities’ Type I Financial Instruments Business registration, corporate bond platform, and established customer base give us the tools to make that vision real.”
Metaplanet outlined four core synergies it expects from the deal. The company plans to distribute Siiibo’s existing bond products to its shareholder base of approximately 250,000 investors. It also intends to develop BTC-linked financial products — including BTC-linked bonds — for distribution through the Siiibo platform.
Joint underwriting of bond and digital securities issuances is planned in collaboration with Metaplanet Ventures Inc., with a focus on venture companies in cryptocurrency and decentralized finance.
A pilot program for security tokens and other digitized financial instruments is on the roadmap as well.
Kazuki Komura, CEO of Siiibo Securities, said the combination would enable capital formation structures not possible before.
“By combining the strengths of both companies in finance, technology, and community building, we believe we can create new forms of capital formation and investment experiences,” Komura said.
Metaplanet said it will fund the acquisition from cash on hand and borrowings, with the option to draw on Bitcoin-backed credit facilities that carry an aggregate borrowing capacity of up to $500 million.