Ring Capital
2 rue Favart, Paris, Ile-de-France, 75002, France
Overview
Empower tech entrepreneurs to build a better tomorrow, where business performance and sustainability coexist. Enter the orbit.
- Total investments
- 33
- Lead investments
- 13
- Investments · 12mo
- 9
- Active investors
- 9
Sector focus
- Finance
- Financial Services
- Venture Capital
Investment portfolio
- En Carta Diagnostics
Participated · Equity · Jul 2026
Founded in 2022 by Guillaume Horreard and Margot Karlikow, En Carta Diagnostics is developing a rapid point-of-need molecular diagnostic platform in an affordable cassette format that the company says delivers laboratory-level PCR precision in about 30 minutes. The technology uses aptamers to bind targets with high affinity and specificity and is positioned to detect indications across genetic, pathogenic and veterinary applications. En Carta has achieved first-in-human use and is running two clinical trials for its flagship early Lyme disease test in Boston and Bialystok, and in January 2026 received FDA Breakthrough Device Designation. The company has a co-development and commercialisation agreement with AAZ totaling a €13 million commercial partnership to bring rapid molecular tests for chlamydia and gonorrhea to market with committed volumes over five years. En Carta plans to industrialise via a fabless model with Circum Medical for cost-efficient, high-volume manufacturing and to expand from Lyme detection into STI screening while pursuing regulatory approvals in Europe and the US.
- Rocapine
Participated · Series A · Jun 2026
Rocapine develops a portfolio of wellness apps that aim to support healthier daily habits by prioritising wellbeing rather than maximizing engagement. Founded in late 2024 by Stanislas Marchand (CEO), Jean-Gabriel Boinot-Tramoni and Sammy Teillet, the company has launched apps across women's health, addiction therapy and nutrition, including Harmony, That Girl and Unchaind. The studio describes its products as designed to "hold instead of hook" and uses AI-driven tools and a testing engine to iterate on app ideas. Rocapine plans to scale its testing engine to 400 apps this year and invest in AI, data and marketing infrastructure to grow category leaders. Its recent $13M Series A provides the capital to execute on these expansion plans.
- Enersweet
Led · Equity · Mar 2026
Founded in 2022, Enersweet builds and integrates software and digital solutions to support building energy transition, organized around two poles: software for property diagnosticians and engineering firms, and services for regulatory compliance and deployment of building technical management (GTB) for owners, managers and large occupants. The group follows a buy-and-build strategy and has completed five acquisitions in three years to consolidate a fragmented market. As of 2025 it employed about 85 people, served over 7,000 clients and reported more than €10 million in revenue in its second full year. Management remains majority shareholder and retains control following the recent financing. Enersweet targets two to three acquisitions per year and plans to deploy €100 million by 2030 to expand into adjacent segments such as air quality, waste management and maintenance management.
- ISAAC
Participated · Equity · Mar 2026
ISAAC, founded in 2018 out of Politecnico di Milano, builds proprietary active mass damper systems that shield existing structures from seismic events without halting building operations. Its smart, non-invasive devices are already deployed in hundreds of strategic sites across Italy, including the San Martino Polyclinic Hospital and the Port of Genoa Control Tower. The company manages the full lifecycle of its solution—from design and installation to continuous monitoring—through standardised, replicable processes. In 2025 it generated approximately €9 million in turnover, reflecting early commercial traction in the structural-safety market. ISAAC has recently upgraded its Electro-Pro 45x control system to boost performance, reliability and integration with existing infrastructure. With new funding, the firm intends to accelerate technology development, hire additional talent and pursue market expansion, aiming to make urban environments safer and more earthquake-resilient.
- Recupere Metals
Participated · Equity · Jan 2026
Founded in March 2025, Recupere Metals is a French startup tackling the looming copper supply gap by recycling scrap copper directly into new wire. Its patented mechanical technology bypasses traditional smelting and refining, lowering energy consumption while producing wire that meets industrial specifications for electric motors, data centres and other digital infrastructure. The company is currently running pilot tests with prospective customers to fine-tune volumes and technical characteristics, and it plans to monetise through direct sales of copper wire. Management targets production costs on par with conventionally mined copper despite relying exclusively on recycled feedstock. With fresh funding, Recupere Metals aims to scale from laboratory work to full industrial production and to build local recycling-based supply chains that reduce Europe’s dependence on imported copper. The startup ultimately envisions annual output of 6,000 tonnes of copper wire by 2028.