About BitStone Capital
BitStone Capital is a venture capital firm founded in 2017. It is primarily based out of Cologne, Germany. As of Feb 2026, BitStone Capital has invested in 24 companies. It primarily invests in Seed round in Germany based startups. Its investments are spread across a wide range of sectors from Enterprise Applications to Real Estate and Construction Tech and High Tech. Most recently it participated in the $***** Series A round of Optiml Overall, BitStone Capital portfolio has seen 1 IPO and 1 acquisition, namely Doozer and Inreal Technologies. A lot of funds co-invest with BitStone Capital, with names like HTGF sharing a substantial percentage of its portfolio. BitStone Capital has team of 7 people including 3 partners.Key Metrics
Team Members
Portfolio Sectors
Portfolio Locations
Rounds of Entry
Seed & Series A
Portfolio IPOs
Portfolio Acquisitions
BitStone Capital's List of Top Investments
BitStone Capital has a portfolio of 24 companies. Their most notable investments are in _blaenk and Aedifion.Their portfolio spans across Germany, Switzerland and Austria. They have invested in Enterprise Applications, Real Estate and Construction Tech, High Tech and 8 other sectors, across stages such as Seed, Series A stages. Here is the list of top investments by BitStone Capital:1. Optiml
Provider of real estate decision intelligence software. This software empowers asset managers, investors, and consultancies to create and optimize cost-effective, low-carbon strategies for real estate assets. It facilitates end-to-end asset and portfolio management, enabling users to meet regulatory requirements and improve asset value. The platform integrates with existing systems, utilizes optimization algorithms and energy simulations, and provides actionable insights to support faster, better decision-making. It streamlines workflows, aligns stakeholders, and simplifies processes such as capital expenditure budgeting. The software offers scalable integration with various tools and platforms, ensuring compliance and security.
Key facts about Optiml
- Founded Year: 2022
- Location: Zurich (Switzerland)
- Stage: Series A
- Total Funding till date: $15.1M
- Employee Count: 23 as on May 31, 2026
- Investors: Venture Kick, Innovation Endeavors and 4 Others
- Latest Funding Round: Series A, Feb 17, 2026, $*****
- Highlight: Editors' Pick
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2. Aedifion
Provider of cloud platform for building operation and energy efficiency. The platform uses real-time data and artificial intelligence to optimize energy consumption and reduce operating costs. It offers insights for system control and savings without requiring structural investments. The platform supports regulatory compliance, sustainability, and profitability for real estate portfolios.
Key facts about Aedifion
- Founded Year: 2017
- Location: Cologne (Germany)
- Stage: Series B
- Total Funding till date: $32.8M
- Employee Count: 111 as on May 31, 2026
- Investors: Phoenix Contact Innovation Ventures, Bauwens and 8 Others
- Latest Funding Round: Series B, Jun 25, 2025, $*****
- Highlight: Editors' Pick
3. Green Fusion
AI and cloud-based platform offering energy monitoring solutions for commercial applications. The platform provides control of the energy system for the areas of heat, electricity, and e-mobility. It enables the control, monitoring, and optimization of energy systems.
Key facts about Green Fusion
- Founded Year: 2021
- Location: Hohen Neuendorf (Germany)
- Stage: Series A
- Total Funding till date: $15.6M
- Employee Count: 109 as on May 31, 2026
- Investors: Siparex, kopa ventures and 10 Others
- Latest Funding Round: Series A, Jan 21, 2025, $*****
- Highlight: Editors' Pick
4. Plancraft
Streamlining workflows for tradespeople via cloud-based software. The company offers a platform designed to manage all aspects of a trade business, from creating quotes and invoices to tracking time and managing projects. Features include a digital project folder, time tracking, communication tools, and automated work instructions. The platform aims to reduce administrative tasks, allowing tradespeople to focus on their core work. It provides tools for efficient project planning, cost tracking, and client communication, all accessible from various devices. The software also facilitates seamless collaboration between office and field teams.
Key facts about Plancraft
5. Alcemy
AI-based quality prediction software for the cement manufacturing industry. It utilizes control theory algorithms and machine learning models for product quality forecasts for cement mixtures. It helps to reduce clinker factor and carbon emissions, increases product quality and customer satisfaction, removes the laboratory testing process, and provides suggestions for process optimization.
Key facts about Alcemy
- Founded Year: 2018
- Location: Berlin (Germany)
- Stage: Series A
- Total Funding till date: $20M
- Employee Count: 64 as on May 31, 2026
- Investors: La Famiglia, Norrsken VC and 11 Others
- Latest Funding Round: Series A, Jul 04, 2024, $*****
- Highlight: Editors' Pick
BitStone Capital's Year-on-Year Investment Trends
BitStone Capital has invested in 24 companies over the last 8 years, with an average of 1 new investment annually in the last 5 years. In 2025, it made 3 investments, while as of Feb 2026, it has made 1 investment in this year. Its most recent first time investment was in Optiml and most recent follow-on round was in Optiml.Year | No. of Investments | ||
|---|---|---|---|
1st Round | Follow-on | Total | |
2026 (YTD) | 0 | 1 | 1 |
2025 | 0 | 3 | 3 |
2024 | 1 | 1 | 2 |
2023 | 1 | 2 | 3 |
2022 | 4 | 0 | 4 |
2021 | 2 | 0 | 2 |
2020 | 3 | 0 | 3 |
2019 | 2 | 0 | 2 |
2018 | 2 | 0 | 2 |
BitStone Capital's Investments by Stage
BitStone Capital has made 11 investments in Seed stage with an average round size of $4.46M and 4 investments in Series A stage with an average round size of $8.55M.Stage of entry | No. of Investments |
|---|---|
Seed | 11 |
Series A | 4 |
Note: We have considered here, only first round of investments
BitStone Capital's Investments by Sector
BitStone Capital has a diverse portfolio, with companies operating in the Enterprise Applications, Real Estate and Construction Tech, Vertical SaaS, Energy Tech and Environment Tech. Notably, it has invested in 21 Enterprise (B2B) companies, 21 Tech companies, 19 Software companies and at least 14 companies focusing on Saas.Sector | No. of Investments |
|---|---|
Enterprise Applications | 10 |
Real Estate and Construction Tech | 10 |
Vertical SaaS | 8 |
Energy Tech | 4 |
Environment Tech | 4 |
Others | 13 |
Note: We have considered here, only first round of investments
BitStone Capital's Investments by Geography
BitStone Capital has made most investments in Germany (14), followed by Switzerland where it has made 1 investment.Country | No. of Investments |
|---|---|
Germany | 14 |
Switzerland | 1 |
Note: We have considered here, only first round of investments
BitStone Capital's recent investments
BitStone Capital has made 1 investments in 2026 so far - Optiml.Here are the most recent investments by BitStone Capital:
Filter this listDate | Company | Location | Round Details | Round Amount | Co-Investors |
|---|---|---|---|---|---|
Feb 17, 2026 | Switzerland | Series A | 3926 | [+2] | |
Jun 25, 2025 | Germany | Series B | 8005 | [+4] | |
Apr 23, 2025 | Germany | Series B | 7010 | ||
Jan 21, 2025 | Germany | Series A | 7858 | [+5] | |
Aug 21, 2024 | Switzerland | Seed | 9812 | [+2] |
IPOs and Publicly Listed companies in BitStone Capital's Portfolio
1 of BitStone Capital's portfolio company became public - Inreal Technologies.Here are BitStone Capital's portfolio companies that went public:
Company | IPO Date | First Invested on | First Round of Investment | Round Size |
|---|---|---|---|---|
- | - | - | 8537 |
Acquired companies in BitStone Capital's Portfolio
1 company from BitStone Capital's portfolio has been acquired. The most recent acquisition was Doozer in Jun 2024 by Zig for $*****.Here are BitStone Capital's portfolio companies that got acquired most recently:
Company | Acquisition Date | First Invested on | First Round of Investment | Round Size |
|---|---|---|---|---|
Jun 13, 2024 | Dec 16, 2020 | Series A | 9219 |
Team profile of BitStone Capital
BitStone Capital has a team of 7 members including 3 Partners and 1 Venture Partner located in Germany. BitStone Capital's team does not sit on the board of any company as of now.Here is a list of all team members in BitStone Capital:
Name | Designation | Location | Board Memberships | Contact Details |
|---|---|---|---|---|
Partner | Cologne | - | ||
Partner | Cologne | - | ||
Partner | Cologne | - | ||
Venture Partner | Germany |
Co-investors of BitStone Capital
Over the past 8 years, 88 investors have co-invested in BitStone Capital's portfolio companies. This includes funds and angels.
- Invested before BitStone Capital: Planet A, Innovation Endeavors and 23 others have invested in rounds before BitStone Capital. There is 1 company where Planet A has invested before BitStone Capital and 1 company where Innovation Endeavors has invested before BitStone Capital.
- Top Co-investors of BitStone Capital: 44 investors entered a company along with BitStone Capital. These include investors like HTGF (2 companies).
- Invested after BitStone Capital: A total of 19 investors have invested in BitStone Capital's portfolio after their investments. Top Investors include MOMENI Group (1 company), Drees & Sommer (1 company) and BeyondBuild (1 company).
Recent News related to BitStone Capital
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Germany’s aedifion Raises €17M to Cut Real Estate Costs & CO₂ EmissionsSilicon Canals•Jun 24, 2025•BitStone Capital, World Fund, MOMENI Group, Aedifion and 3 others
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Osborne Clarke advises Node.ENERGY at Series-B financing round over EUR 15 millionRecht•May 06, 2025•node.energy, DeepTech & Climate Fonds, eCAPITAL, HTGF and 3 others
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Green Fusion secures €12M to expand AI-powered heating optimisation to France and BeneluxTech Funding News•Jan 21, 2025•HV Capital, XAnge, BitStone Capital, Übermorgen Ventures and 4 others
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Zurich-based proptech Optiml secures €3.5 million pre-seed extension to decarbonise real estateEU-Startups•Aug 21, 2024•Optiml, BitStone Capital, Kompas, Prewave and 2 others
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Plancraft secures 12 million euros in funding to digitalise European craftsHTGF•Jun 05, 2024•Plancraft, HTGF, Bolt, Spotify and 4 others
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Aedifion secures twelve million eurosStartbase•Jan 30, 2023•Aedifion, World Fund, , BeyondBuild and 4 others
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German proptech startup aedifion raises €12M to enable smart building revolution via AISilicon Canals•Jan 27, 2023•Aedifion, World Fund, BeyondBuild, Bauwens and 5 others
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Plancraft Apparently Closes Funding RoundStartbase•Sep 06, 2022•Plancraft, HTGF, BitStone Capital, xdeck and 1 other
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node.energy’s EUR 7 Million Series A Financing RoundGlobal Legal Chronicle•Aug 08, 2022•Osborne Clarke, node.energy, BitStone Capital, 10x Founders and 3 others
