Metaplanet Launches Regulated Securities Arm After Completing Siiibo Acquisition
Metaplanet has launched a licensed securities subsidiary after completing its acquisition of Siiibo Securities on July 13, moving beyond simple Bitcoin accumulation into regulated financial services. The newly formed Metaplanet Securities will operate under a Type I Financial Instruments Business Operator license from Japan’s Financial Services Agency, allowing it to structure and distribute securities products tied to digital assets.
From Treasury Accumulation to Regulated Products

The Tokyo-based firm paid approximately ¥2.1 billion for Siiibo Securities, a platform that previously supported more than 40 companies and facilitated over 100 bond issuances, including private placement corporate bonds and venture debt financing. The acquisition, first announced in June, positions Metaplanet to build investment products rather than simply hold Bitcoin on its balance sheet.
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Metaplanet announced the rebranding on social media, posting: “メタプラネット証券、Day 1” alongside an image of the new subsidiary’s branding. The regulatory approval from Japan’s Financial Services Agency is a critical distinction, as it allows the company to operate within the country’s established securities framework rather than in a regulatory gray area.
Project Nova and Bitcoin-Backed Credit
The securities arm will support Metaplanet’s broader Project Nova initiative, which aims to create Bitcoin-focused financial infrastructure connecting digital assets with traditional investment markets. The company is working with JPYC, a yen stablecoin issuer, and blockchain infrastructure provider Progmat on a Bitcoin-backed digital credit ecosystem.
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The initiative focuses on using Bitcoin as collateral or credit enhancement for future financial products. However, Metaplanet has not confirmed any specific product launches, yield structures, or distribution timelines. Any future offerings will require additional approvals and regulatory discussions, the company said.
Growing Bitcoin Reserves
Metaplanet’s securities expansion follows its aggressive Bitcoin accumulation strategy. The company reported holding approximately 43,000 BTC after purchasing 2,823 BTC during the second quarter of 2026. It has outlined plans to expand its holdings to 210,000 BTC by the end of 2027, believing its Bitcoin reserves could support future financial products under Japan’s regulated securities environment.
The launch of Metaplanet Securities represents a broader attempt to combine Bitcoin treasury management with traditional finance. As regulatory frameworks develop, the company is positioning itself as a bridge between digital assets and institutional investment markets in Japan.
Frequently Asked Questions
What is Metaplanet Securities?
Metaplanet Securities is a newly launched, licensed securities subsidiary formed after Metaplanet’s acquisition of Siiibo Securities. It operates under a Type I Financial Instruments Business Operator license from Japan’s Financial Services Agency.
What is Project Nova?
Project Nova is Metaplanet’s initiative to build Bitcoin-focused financial infrastructure, including a Bitcoin-backed digital credit ecosystem developed in partnership with yen stablecoin issuer JPYC and blockchain infrastructure provider Progmat.
How much Bitcoin does Metaplanet hold?
Metaplanet reported holding approximately 43,000 BTC as of mid-2026, with plans to expand its holdings to 210,000 BTC by the end of 2027.
Why did Metaplanet acquire Siiibo Securities?
Metaplanet acquired Siiibo Securities to gain a regulated securities platform that can structure and distribute Bitcoin-linked financial products within Japan’s established financial regulatory environment.
