BitStone Capital is a venture capital investor focusing on innovative and sustainable technology companies in the real estate and construction sector. Beyond financing, BitStone Capital catalyzes the growth of its Real Estate- and Construction-Tech portfolio companies with its extensive network, unique industry know-how and -access, as well as specific expertise in new technologies. With its investments, BitStone Capital would like to make a contribution to the sustainable and future-proof transformation of the real estate and construction industry.
Please visit us at: http://www.bitstone.capital/impressum/
Please visit us at: http://www.bitstone.capital/impressum/
Location: Germany, North Rhine-Westphalia, Cologne
Employees: 11-50
Founded date: 2017
Investment Type: Venture Capital
Portfolio 5
| Date | Name | Website | Total Raised | Location |
| 17.02.2026 | OPTIML | optiml.com | $13.36M | Switzerlan... |
| - | Blaenk | blaenk.com | - | Germany, N... |
| - | Bimspot | bimspot.io | - | Austria, V... |
| - | aedifion | aedifion.com | $52.58M | Germany |
| - | Pinestack | pinestack.io | - | Germany, B... |
Persons 12
| Date | First Name | Last Name | Title | Location | |||
| - | Tuğba | Kılıçaslan... | Team Assis... | linkedin.c... | - | - | - |
| - | Akin | Özdemir | Investment... | linkedin.c... | - | - | - |
| - | Thomas | Knaack | Venture Pa... | linkedin.c... | - | - | - |
| - | Manfred | Heid | Managing P... | linkedin.c... | - | m*********... | - |
| - | Martin | Bressem | Investment... | linkedin.c... | - | - | - |
| - | Michael | Kokorniak | Venture Pa... | linkedin.c... | - | - | - |
| - | Marc | Stilke | Venture Pa... | linkedin.c... | - | m*****e@bi... | - |
| - | Daniel | Pölt | Investment... | linkedin.c... | - | d*********... | - |
| - | Kai | Panitzki | Managing P... | linkedin.c... | - | k*********... | - |
| - | Marnix | Roes | Investment... | linkedin.c... | - | - | - |
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Mentions in press and media 10
| Date | Title | Description |
| 18.02.2026 | PropTech Innovator Optiml Secures €8M for AI Real Estate Expansion | Optiml, a Swiss PropTech firm, secured €8 million in seed funding. The company pioneers Real Estate Decision Intelligence (REDI). Its AI platform optimizes institutional real estate portfolios. It guides hold, sell, invest, and capital expe... |
| 17.02.2026 | PropTech startup Optiml secures €8 million to expand real estate AI platform | Optiml, an ETH Zurich spin-off founded in 2022, is pioneering Real Estate Decision Intelligence (REDI)—a new software category enabling institutional investors, asset managers, owners, and their consultants to continuously optimize hold, s... |
| 23.12.2025 | „Fundraising kostet viel Zeit und Fokus“ | Das Kölner PropTech aedifion, 2017 von Johannes Fütterer, Felix Dorner, Jan Henrik Ziegeldorf und Erik Brümmendorf gegründet, entwickelt eine Software, mit der Immobilienbesitzer die Betriebskosten analysieren und im besten Fall senken könn... |
| 22.01.2025 | Green Fusion and Vertical Compute: Pioneering the Future of Energy and Technology | In the heart of Europe, two startups are rewriting the rules of their respective industries. Green Fusion, a Berlin-based innovator, is tackling the inefficiencies of heating systems. Meanwhile, Vertical Compute, hailing from Belgium, is br... |
| 21.01.2025 | Green Fusion secures €12 million to further develop heating systems and fuel its growth | Green Fusion, a Berlin-based startup specialising in the digitisation and optimisation of heating systems for apartment buildings, has successfully closed a €12 million Series A funding round. The round was led by HV Capital and XAnge, with... |
| 22.08.2024 | Optiml: Pioneering the Path to Sustainable Real Estate | In a world grappling with climate change, the real estate sector stands at a crossroads. Traditional methods of property management and investment are being challenged by the urgent need for sustainability. Enter Optiml, a Zurich-based prop... |
| 21.08.2024 | Optiml raises $4M Pre-Seed for ESG-compliant assets | Optiml, a digital platform for Net Zero real estate investment and renovation planning, has closed a $4M pre-seed extension funding round. The round was led by BitStone Capital, and supported by KOMPAS VC. An ETH Zürich spin-out, Optiml’s A... |
| 21.08.2024 | Net Zero PropTech Optiml secures $4M to decarbonize real estate | Optiml, the digital platform for Net Zero real estate investment and renovation planning, has closed a $4M Pre-Seed Extension funding round. The round was led by BitStone Capital, a specialist investor in real estate and construction techn... |
| 07.08.2024 | +++ Solytic +++ Aeditive +++ Pflegix +++ Black Forest Labs +++ Startup-Politik +++ KI +++ DHDL +++ | Was gibt’s Neues? In unserem #StartupTicker liefern wir eine kompakte Übersicht über die wichtigsten Startup-Nachrichten des Tages (Mittwoch, 6. August) #STARTUPLAND: NUR FÜR FRÜHE VÖGEL +++ Kommt mit ins Startupland! Ab sofort könnt Ihr Eu... |
| 21.02.2023 | Green Fusion receives €2.7M seed funding to further drive energy transition in the housing sector | Hohen Neuendorf, February 21th, 2023 – Brandenburg-based start-up Green Fusion, provider of an intelligent SaaS solution for cross-sector control and optimisation of heating and energy systems, successfully closes seed financing of €2.7 mil... |