Capital B (The Blockchain Group)
Companies
Capital B, formerly known as The Blockchain Group (Euronext Paris: ALTBG), became Europe's first publicly listed Bitcoin treasury company in November 2024. The French company, which also provides data intelligence and AI consulting, has pursued an aggressive MicroStrategy-style Bitcoin accumulation strategy, raising over €342 million through equity programs and convertible bonds to acquire Bitcoin. By early 2025 the company held over 620 BTC and has authorized capital raises targeting 10+ billion euros to continue accumulation.
Details
- Sector
- technology_consulting
- Ticker
- CPTLB
- Country
- France
- Notable
- Europe's first Bitcoin Treasury Company (Nov 2024); target 170,000 BTC (1% supply) by 2032; backed by Adam Back (Blockstream CEO)
- Exchange
- Euronext Growth Paris
- Industry
- Data Intelligence / Bitcoin Treasury
- Headquarters
- Paris, France
- Exchange Listed
- Euronext Growth Paris
- Bitcoin Holdings
- 2,201 BTC
- Btc Holdings Date
- 2025-12
Links
More Companies
Strategy (formerly MicroStrategy)
Strategy (Nasdaq: MSTR), formerly MicroStrategy, is the world's largest corporate Bitcoin holder. Founded by Michael Saylor, the company rebranded in 2025 to reflect its identity as a Bitcoin treasury company. It holds over 500,000 BTC accumulated through equity and debt financing, pioneering the corporate Bitcoin standard that inspired hundreds of companies worldwide.
Acurx Pharmaceuticals
Acurx Pharmaceuticals (NASDAQ: ACXP) is a US biopharmaceutical company that made headlines in November 2021 by adopting Bitcoin as its primary treasury reserve asset — one of the first pharmaceutical companies to do so. The company approved purchasing $1 million in Bitcoin and has continued to hold BTC alongside its drug development pipeline focused on antibiotics. Notable for crossing industry boundaries to embrace the Bitcoin standard.
aifinyo AG
aifinyo AG is Germany's first pure-play Bitcoin treasury company, announced in October 2025. Founded in 2012 and publicly listed since 2018, the company operates two BaFin-regulated subsidiaries — aifinyo finance GmbH (factoring and leasing) and aifinyo payments GmbH (payment institution) — serving 8,000 business customers through its Smart Billment invoice management platform. The company has adopted a MicroStrategy-style strategy, with UTXO Management as a strategic investor, targeting accumulation of 10,000 BTC by 2027.
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