I

Impax Asset Management

Venture Capital

Public listed asset manager (IPX, AIM) founded 1998 by Ian Simm. £34.1bn AUM as of Dec 2024. Specialist in sustainable economy transition. 25 strategies spanning listed equities, fixed income, systematic, multi-asset, energy infrastructure. 298 employees across UK, US, Ireland, Hong Kong, Japan. Recent fixed income expansion via Absalon Capital (2024, £0.3bn) & SKY Harbor acquisition (2025, £1.1bn). Strong ESG stewardship record.

Check Size
£5M - £100M

Investment Thesis

Sustainable transition investing across public & private markets. Focus: climate, water, resource efficiency, environmental markets, renewable energy infrastructure. ESG-integrated fundamental research. Listed equities (90% AUM), fixed income, systematic strategies. Multi-asset. Global exposure; North America majority revenue. Large check sizes, institutional primary. Avoids companies failing ESG standards. Est. £28.5bn AUM (Feb 2025).

Interested in connecting?

Visit their website or reach out directly.