Investing in Capital B on the Stock Exchange: Complete Guide 2025

Investing in blockchain technology is attracting many investors today who seek innovation and sustainable growth. Among the companies listed on Euronext Paris, Capital B (formerly The Blockchain Group, mnemonic code ALTBG) stands out for its specialization in blockchain, data intelligence, AI, and decentralized technological services. This article provides a detailed and up-to-date analysis of all essential information to know for investing in Capital B in 2025, including financial figures, strategy, real market positioning, and sectoral prospects.

Presentation of Capital B and Its Activities

Capital B (formerly The Blockchain Group) is a French company specializing in the development of blockchain solutions, data intelligence, and consulting in decentralized technologies. Founded in 2017, it distinguishes itself by a strategic positioning on markets related to the management and optimization of bitcoin treasury. Since November 2024, Capital B has officially changed its name, reinforcing its image as a pioneer among Bitcoin Treasury Companies in Europe.

Capital B relies on two main operational poles:

  • iOrga : Development of custom applications, traditional and decentralized architecture.
  • Trimane : Data intelligence solutions covering the digital value chain since 2005.

The group's mission revolves around integrating blockchain, AI, and decentralized approaches to serve businesses and institutions. Its strategy includes building a significant reserve of bitcoins as a long-term treasury asset through financing operations and surplus cash.

Name Change: From The Blockchain Group to Capital B

Since July 21, 2025, the company operates under the commercial name Capital B, although the official stock exchange mnemonic code remains ALTBG. This change reflects the group's ambition to assert itself as a central actor in the management and valuation of bitcoins in Europe.

History and Strategic Ambitions

The company, founded in 2017, quickly established itself among the French actors in blockchain technology. Its growth was supported by institutional partnerships, an intensification of research & development, and targeting financial and industrial markets.

The stated objective of the group is to revolutionize estate management and data security processes through blockchain and decentralized technologies. Capital B prioritizes a dual strategy:

  • Develop platforms and tools adapted to the needs of businesses in a digitalization context.
  • Accumulate and capitalize on bitcoin treasury as a strategic and differentiating asset, showcasing an active management of the bitcoin/share ratio.

Market Positioning of Capital B: Real Strength and Sectoral Comparisons

In contrast to what its sometimes overestimated fame suggests, Capital B does not hold a dominant position across the entire international blockchain sector. Its position is mainly affirmed in the very specific niche of European Bitcoin Treasury Companies and associated technological services.

To concretely evaluate its market share and comparative strength, several social and financial indicators must be taken into account:

  • Number of shares in circulation: approximately 122 million as of November 2025, after successive conversions of BSA and OCA.
  • Revenue and innovation: moderate growth, with activities highly dependent on cryptocurrency market volatility and the data/IA sector. Sustained innovation dynamics, more than 15 new patents filed in 2025.
  • Bitcoin reserves: over 1,955 BTC officially held as of July 2025 (equivalent to approximately 177 million euros).
  • Fluctuating market capitalization: varying significantly according to issuance and stock price. Never stabilized at 450 million euros; prices in autumn ranged between 0.90€ and 4€ per share depending on the period, with a market capitalization observed between 111 and 321 million euros throughout the year.

Competing companies also offer blockchain or fintech solutions, but the group's bitcoin treasury strategy distinguishes it within its niche segment. To claim a dominant status across the entire blockchain sector in France or Europe, market share figures or official rankings would need to be provided, which do not currently exist.

Field of activity and sectors covered

Capital B operates on three main axes:

  • Blockchain and digital asset management
  • Technological consulting and Data Intelligence
  • AI advisory and decentralized applications

Its clients come from various sectors: finance, big data, industry, healthcare, travel, media, and insurance. The majority of revenues come from custom development and bitcoin reserve management, reinforced by the ability to provide personalized solutions around data and artificial intelligence.

Updated Financial Information: Market Capitalization, Results, and Volatility

The communication around the value of Capital B is often complex due to the volatility of the stock and multiple capital increases. To ensure accurate and transparent information, each parameter should be detailed.

Stock Symbol and Key Indicators

  • Official Name: Capital B (since July 2025)
  • Former Name: The Blockchain Group (until July 2025)
  • Mnemonic Code: ALTBG
  • Market: Euronext Paris
  • Industry: IT services, blockchain consultancy, data intelligence, AI

Market Capitalization and Number of Shares

As of November 11, 2025:

  • Number of shares outstanding: approximately 122 million
  • Share price: around €0.90 at the close of November 11 (with peaks at €4 during major operations in late 2025)
  • Market capitalization: approximately 110 to 198 million euros depending on the daily share price. No official level stabilized at 450 million euros

The market capitalization is highly dependent on the daily fluctuations of the share price and the capital increases realized throughout the year. When the share price approaches €4, the market capitalization can exceed 480 million euros, but this situation remains exceptional.

Recent examples of evolution:

  • May 9, 2025: offer at €1.09 for 102 million shares – cap. approximately 111 million euros
  • July 2025: successive emissions up to 122 million shares; price around €2 – cap. approximately 244 million euros

Bitcoin reserves and asset strategy

To strengthen its liquidity and differentiation, Capital B holds a significant reserve of bitcoins. As of July 21, 2025, it owns approximately 1,955 BTC, equivalent to more than 177 million euros. This stock evolves based on the company’s acquisitions, cryptocurrency market trends, and financing strategies.

The officially adopted strategy since November 2024 aims to increase the bitcoin/share ratio over the quarters. This positioning attracts many investors seeking to benefit indirectly from the rise in bitcoin through a listed stock.

Historical performance and volatility of the ALTBG stock

The ALTBG stock has shown pronounced volatility since its introduction on Euronext Paris in 2019. Prices sometimes fluctuate dramatically in response to earnings announcements, conversion operations, and bitcoin market fluctuations.

  • Over the past twelve months (November 2024 to November 2025), the stock experienced significant gains, but also major corrections, ranging between €0.90 and up to €4 during market peaks.
  • The trend remains generally positive for the year, supported by strong technological innovation (+15 patents filed since January 2025), effective risk management, and media interest linked to the bitcoin asset strategy.
  • In comparison, the evolution of ALTBG sometimes outperforms traditional indices like the CAC 40 during certain periods, but is more exposed to market cycles and cryptocurrency volatility.

Financial results and structural solidity

The company presents contrasting quarterly results but with solid signals:

  • Gross margin: above 47% for the first quarter of 2025, increasing thanks to optimized management and integration of technological synergies.
  • Innovation: more than 15 patents filed since January 2025, confirming the dynamic R&D.
  • Workforce: 125 employees (including blockchain engineers, data experts, AI consultants).

The company invests in training, technology watch, and digital process optimization, displaying a financial structure adapted to growth.

Growth prospects and sector environment

The Global Blockchain and Data Technologies Market

The blockchain and data intelligence sector is experiencing exponential growth. According to the latest projections, the volume of blockchain transactions is expected to reach 1 trillion USD by 2030. Several factors are driving the market:

  • Accelerated digitalization of businesses and institutions
  • Increased demand for security and transparency
  • Massive adoption of artificial intelligence in business processes
  • Growing popularity of Bitcoin and digital assets as a store of value

Capital B positions itself favorably in this environment thanks to its dual expertise in blockchain and data, its Bitcoin asset management strategy, and its personalized high-tech advisory services.

Comparisons with Major Competitors

The French sector of blockchain and data intelligence technologies is marked by the presence of many actors. Among them:

  • Specialized startups in decentralized security
  • Technology consulting firms and AI companies
  • Companies offering solutions for managing digital assets

Capital B occupies a notable position in the segment of listed companies with Bitcoin asset management. However, there is no official sectoral ranking allowing one to assert a dominant global position due to lack of transparent market share indicators.

Investment Strategies in Capital B in 2025

Long-term Approach: Betting on Innovation and Bitcoin Valuation

Investing in Capital B over the long term meets the expectations of risk-tolerant investors seeking to combine technological growth with the evolution of Bitcoin. Key factors to monitor:

  • Evolution of Bitcoin reserves and asset management strategy
  • Trend of the ALTBG stock price and associated volatility
  • Earnings and dividend distributions (to date, prioritizing capitalization over growth)
  • Deployment of new products and advancements in AI
  • Management's ability to manage market cycles and remain innovative

For bold profiles, Capital B offers indirect exposure to Bitcoin appreciation through a listed stock, while benefiting from the company’s technological expertise and data/AI synergies.

Short and Medium-term Approach: Monitoring Volatility and Operations

During periods of high volatility (rapid increases or sharp corrections in Bitcoin), Capital B can generate short-term trading opportunities. However, prudent management is required due to the impact of capital increases, BSA/OCA conversions, and high float on liquidity.

  • Follow-up on the schedule of earnings releases and institutional announcements
  • Technical analysis of the ALTBG stock price on Euronext Paris
  • Anticipation of crypto market cycles

It is important to note that the stock's liquidity remains high, but the float exceeds 96%, which may increase volatility during correction periods.

Points of Attention for Investors

  • The market capitalization of Capital B is never stable and depends on the number of shares, the last price, and ongoing operations.
  • For any estimate, it is crucial to specify the date, the number of circulating shares, and the exact price used.
  • The new commercial name "Capital B" must be systematically updated to avoid any confusion with The Blockchain Group.
  • The exact position in the market is not "dominant" without market share indicators or sector ranking.
  • Indirect exposure to Bitcoin makes the stock very sensitive to fluctuations in the crypto sector.

Conclusion : Investing in Capital B in 2025

Investing in Capital B in 2025 stands out by:

  • A unique positioning in Bitcoin wealth management and blockchain, data intelligence, and AI services
  • A listed structure on Euronext Paris under the code ALTBG, sponsored by an expert team and a significant reserve of bitcoins
  • Financial results and dynamic innovation that attract market interest
  • A fluctuating market capitalization, to be closely monitored for any financial commitment
  • Growth prospects driven by sector digitalization, but with higher volatility and risk compared to traditional tech values

Capital B represents an investment solution tailored to informed investors curious about Bitcoin wealth strategies and looking to diversify their portfolio through blockchain innovations and data intelligence. Before any commitment, it is strongly recommended to analyze the evolution of the sector, quarterly financial reports, and medium to long-term strategic projections.