BitStone Capital — Full Portfolio
28 tracked investments · listed companies and verified rows first
aedifion provides a cloud platform with AI-powered building analytics and autonomous control systems to optimize energy consumption and operating costs for commercial real estate portfolios, achieving up to 40% savings in energy, CO2 emissions, and operational expenses.
AI & Machine LearningCloud ComputingPropTech
Felix Dorner(Founder)in
Co-investorsPhoenix Contact Innovation VenturesWorld Fund
alcemy provides software that uses cement producers' lab data to predict cement strength in real time and automate recipe and mill fineness decisions, aiming to reduce clinker content and cut CO2.
Advanced ManufacturingAI & Machine LearningCleantechClimate TechConstruction TechBerlin, DE
Leopold Spenner(Founder)inRobert Meyer(Founder)inLeopold Spenner Robert Meyer(Founder)
Co-investorsAENUEntrepreneur FirstHAWKTAILLa FamigliaLocalGlobeNorrsken VC+3 more
Architrave provides an AI-powered document and asset intelligence platform for commercial real estate, automatically classifying, extracting, and validating data from property documents against a standardized data language of 468 document classes and 1,361 data fields.
AI & Machine LearningPropTechSaaS
Co-investorsPride Capital PartnersPT1
Doozer is a SaaS platform for managing the renovation of vacant apartments, targeting professional residential property owners with roughly 3,500+ units.
Construction TechPropTechSaaS
Co-investorsFuture Energy Ventures
encosa plans, installs, and operates battery storage systems for businesses, optimizing electricity use behind the meter (peak shaving, self-consumption, reduced grid fees) while also trading available storage capacity on energy, capacity, and intraday markets.
CleantechClimate TechEnergy
Sascha KoberstaedtSebastian Becker
Co-investorsBerliner Volksbank VenturesFirst MomentumRealyze VenturesRedstoneTane FundVerve Ventures
Green Fusion provides energy management solutions for the residential real estate sector to optimize heating transitions and reduce carbon emissions.
CleantechClimate TechEnergyPropTech
Matteo Zappulla(Chief Technology Officer & Co-Founder)inSimon Wagenknecht(Founder)inNina Germanus(Founder)inPaul Hock(Founder)inThomas Filkorn(Chief Revenue Officer & Co-Founder)inChris Menzel(Chief Innovation Officer)in
Co-investorsBrandenburg KapitalVireo VenturesXAngeHV Capital
Lichtwart provides a service platform for light, energy, and building management that connects buildings and facilities with service technicians via a hardware module and cloud application.
CleantechEnergyIoT
Johannes Mailänder(Founder)in
Co-investorsVireo VenturesBetter Ventures Central Llc
node.energy provides a software platform for commercial asset management of renewable energy facilities, helping operators automate regulatory compliance and financial reporting for wind and solar parks.
EnergyEnterprise SoftwareSaaS
Co-investorsBONVENTUREDeepTech & Climate Fonds10x FoundersCanaan PartnerseCAPITAL ENTREPRENEURIAL PARTNERSeCapital Entrepreneurial Partners AG+3 more
Okibo builds battery-operated robots that automate painting and drywall finishing for skilled construction teams, using AI-guided 3D scanning and real-time modeling to operate without special setup.
AI & Machine LearningConstruction TechRoboticsEnglewood, US
Nadav Shuruk(Founder)in
Co-investorskineo financeShadow Ventures
OptimL appears to provide decision intelligence and data services for real estate professionals including property owners, investors, portfolio managers, asset managers, and transaction managers.
AI & Machine LearningClimate TechCloud ComputingData & InfrastructureImpact & Social GoodPropTech
Co-investorsKOMPAS VCPlanet A VenturesInnovation Endeavors
GebäudeCheck by PLAN4 is software for structured on-site condition assessment of existing buildings, deriving renovation needs and costs (per DIN 276) and enabling multi-year investment planning.
Construction TechPropTechSaaSFreiburg im Breisgau, DE
Thorsten Harig(Co-Founder und CEO)inHendrik Seibel(Co-Founder und CEO)in
plancraft provides cloud-based software for skilled trades and craft businesses (Handwerksbetriebe) covering quotes, invoicing, order management, scheduling, time tracking, and construction documentation in one tool.
Construction TechEnterprise SoftwareSaaSHamburg, DE
Julian Wiedenhaus(Founder)Alexander Noll(Founder)Richard Keil(Founder)
Co-investorsCreandumHeadlineHigh Tech GruenderfondsHTGF
plancraft is an AI-powered operating system for European tradespeople and craft businesses that automates administrative work and provides management tools.
AI & Machine LearningConstruction TechFintechSaaSHamburg, DE
AlexanderRichardJulian
Co-investorsCreandumHeadlineHeadline Growth Management, LLCRealyze VenturesHTGF
Realyze Ventures is a venture capital firm investing in pre-seed to Series A technology companies across the real estate, construction, and energy sectors in pan-European markets.
CleantechClimate TechConstruction TechPropTech
Manfred Heid(Founder)in
smino is a collaboration platform designed for construction teams to centralize project data, manage tasks and defects, and streamline real-time communication on job sites.
Construction TechEnterprise SoftwareFuture of WorkPropTechSaaSSwitzerland, CH
Co-investorsSerpentine VenturesZAKA VC
synavision offers monitoring and operational optimization software for building technical systems, analyzing plant data in real time to cut energy use, CO2 emissions, and operating costs in new and existing properties.
CleantechPropTechSaaS
VoiceLine builds a voice- and AI-powered tool that captures field information and reduces manual admin work, aimed at replacing clunky systems and manual data entry for sales teams.
AI & Machine LearningEnterprise SoftwareSaaSSales TechFrankfurt, DE
Nicolas Höflinger(Co-founder & CEO)inSebastian Pinkas(Co-founder & CTO)inNicolas Kübler(Chief Product Officer)inNicolas Hoflinger(Founder)
Co-investorsCavalry VenturesNAPPeakSCALEHOUSE Capital ManagementVenture StarsAlstin Capital+1 more
WTEC provides smart building solutions for educational facilities, combining low-voltage LED lighting control, real-time sensor networks, and indoor air quality monitoring to reduce energy consumption and improve student learning environments.
CleantechCloud ComputingConstruction TechEdTechEnterprise SoftwareIoT
XING provides recruiting tools, advertising solutions, and professional networking premium services for businesses to find talent, reach target audiences, and increase company visibility within a professional network environment.
Enterprise SoftwareFuture of WorkHR TechSaaSSocialHamburg, DE
Lars Hinrichs(Founder)
Co-investorsAviv Venture CapitalBrandenburg KapitalCaesar Business AngelsCJH Family Office GmbHECONA AGFX Ventures+5 more
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
AeditiveHotelbirdonyoPlaybook®PropertyScout
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.






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