ET Capital is a Cambridge-based investment firm specializing in high-growth science and technology businesses within the Cambridge, Oxford, and London clusters. Founded in 1992, the firm has raised and managed multiple funds targeting early-stage technology ventures.
ET Capital focuses on early-stage investments in sectors such as life sciences, healthcare, materials, and technology. The firm aims to support science-based businesses with the potential for significant growth and impact.
In March 2025, ET Capital launched the Cambridge Venture Index (CVI) SEIS/EIS Fund. This fund adopts an index-style diversified investment approach, aiming to invest in a broad range of early-stage science and technology startups within the Cambridge cluster.
The fund seeks to democratize investment access, particularly for individual investors, by offering the benefits of SEIS and EIS tax relief schemes where applicable.
Leadership
The firm's leadership includes Founder and Managing Director Martin Rigby, Investment Director James Griffiths, and Non-Executive Director David Gill.
Investment Strategy
ET Capital employs a diversified investment strategy, focusing on a wide array of science and technology-based startups to mitigate risk and capitalize on the strong returns potential within the Cambridge cluster. The firm emphasizes partnerships with universities, accelerators, and incubators to ensure consistent access to quality deal flow.
Notable Investments
ET Capital has invested in companies such as ADC Therapeutics SA, which floated on the NYSE in May 2020 valued at $1.3 billion, and Carbon Engineering Limited, acquired by Occidental Petroleum in August 2023 for $1.1 billion in cash.
