In 2020, flows into global ESG ETFs almost tripled. A Biden Presidency and the European Green Deal will likely see this trend continue this year. Investors are now faced with an increasingly diverse choice when it comes to sustainable investments. What factors determine whether an ETF provider is credible within ESG? Can ESG be implemented through passive investments, or it is necessary to take an active investment approach? The recent move towards index tracking funds based on ESG criteria have been welcomed by investors, but are they the best way to get exposure to the green theme?