c.1,900 companies
Launch date
March 2008
Portfolio managers
Hubert Aarts
David Winborne
Siddharth Jha


A global thematic strategy investing in companies that are developing innovative solutions to resource challenges in environmental markets.

Resource Efficiency

Powerful drivers – growing population, rising living standards and finite natural resources – have triggered above average growth for a diverse set of companies focused on resource efficiency.

Environmental Leaders

The fund employs a research-intensive bottom-up stock selection process to find the leading companies in increasingly important global environmental markets.

Positive Impact

Companies providing environmental solutions and net carbon reductions will help lead the transition to a sustainable global economy.

Cumulative performance (%) USD

Discrete performance (%) USD

(As of 28/02/2023)
 2023 YTD20222021202020192018
Strategy (gross)6.32-21.9523.0326.5028.96-13.26
Strategy (net)6.18-22.5722.0525.4827.95-13.96
FTSE EOAS Index7.75-24.1020.4639.8631.53-12.59
MSCI ACWI4.10-18.3618.5416.2526.60-9.41

All data as at 28 February 2023.

Past performance is not necessarily a guide to future performance. The value of investments can fall as well as rise and you may get back less than you have invested. 1Total assets in the Leaders strategy. The total assets include certain accounts that do not form part of the Leaders GIPS composite, but exclude one account with significantly different objectives and weightings when compared to the other Leaders funds. Performance source: FactSet, Bloomberg, WM Reuters. Data is in USD. Composite figures are presented both gross and net of management fees and include the reinvestment of all income. FTSE index is total return (gross dividend reinvested), MSCI index is total net return (net dividend reinvested). Impax Asset Management claims compliance with Global Investment Performance Standards (GIPS)®. Net-of-fee returns are computed using a model fee, which is the maximum applicable fee within the Composite. GIPS® is a registered trademark of CFA Institute. CFA Institute does not endorse or promote this organization, nor does it warrant the accuracy or quality of the content contained herein. Further information on composite data is available on request.

About the Indexes

FTSE Environmental Opportunities Index Series (EOAS) measures the performance of global companies that have significant involvement in environmental business activities, including renewable and alternative energy, energy efficiency, water technology and waste and pollution control. The FTSE Environmental Opportunities Index Series requires companies to have at least 20% of their business derived from environmental markets and technologies. The FTSE Environmental Opportunities Index Series is published by a joint venture of Impax Asset Management, Ltd. (“Impax”) with FTSE International.

MSCI All-Country World Index (ACWI) Index is a free float-adjusted market capitalization
weighted index that is designed to measure the equity market performance of developed and emerging markets. The MSCI ACWI consists of 47 country indexes comprising 23 developed and 24 emerging market country indexes. The developed market country indexes included are: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, United Kingdom and United States. The emerging market country indexes included are: Brazil, Chile, China, Colombia, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Korea, Malaysia, Mexico, Pakistan, Peru, Philippines, Poland, Qatar, Russia, South Africa, Taiwan, Thailand, Turkey and United Arab Emirates.

Investment Vehicles

Impax Global Environmental Markets Fund

Investing in resource efficiency and environmental solutions.

Portfolio Managers

Hubert Aarts

Deputy Chief Investment Officer, Listed Equities

Hubert serves as Deputy CIO, Listed Equities. Hubert is a key figure overseeing Impax Asset Management’s investment strategies in the listed equities space and is jointly responsible for the development of our investment process, research, and team. He also researches stocks globally, specialising in industrials and consumer discretionary companies.

Prior to joining Impax in 2007, Hubert was a partner at Cambrian Capital. He also spent nearly a decade at BlackRock working as a portfolio manager in European equities. His first role was at MeesPierson in The Netherlands.

Hubert has a master’s degree in Economics and Business Administration from Maastricht University.

Authored Insights

David Winborne

Senior Portfolio Manager

David has been part of the Impax Asset Management team since 2015 and has responsibility for global research, specialising in energy efficiency and pollution control in environmental markets sub-sectors.

Prior to Impax, David was part of the in-house asset management team at Tesco Pension Investment where he had joint responsibility for the global equities investment platform. David also worked at Sarasin & Partners as part of the team that worked on its flagship thematic global equity fund. David began his career as a graduate equity research analyst at Insight Investment.

David has a bachelor’s degree in Politics and Economics from the University of Bath.

Recent Insights

Additional Insights

Siddharth Jha

Portfolio Manager

Siddharth is part of the portfolio construction team for the water strategy focusing predominantly on North American industrials, utilities and healthcare firms. He has been with Impax since 2014.

Prior to joining Impax in his current role, Siddharth completed an internship with the firm in 2012 where he worked with our listed equities team. He also has experience as a clean technology consultant, working in India.

Siddharth earned a bachelor’s cum laude in History and Political Science from Macalester College and an MBA from the London Business School.

Recent Insights

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