Stranded assets refer to those fossil fuel resources that lose value and cannot be utilized due to regulations aimed at combating climate change, economic shifts arising from low oil prices, and innovations in energy efficiency and renewables. Investors face a dilemma on how to manage these risks, considering strategies like divestment or engagement with fossil fuel companies. The report outlines the importance of identifying at-risk assets and adapting investment approaches in light of regulatory, economic, and technological changes impacting fossil fuel viability.