CFA Institute Updated Sustainable-Investing Exam Questions and Answers by avery

Weitzman'sdismal theoremsuggests that traditionalcost-benefit analysis failsto accurately measure the downside risks of climate change because ofuncertainty in extreme tail events. It argues thatlow-probability, high-impact events (e.g., catastrophic global warming)candominate economic risk calculations, making itdifficult to justify inactionbased on expected cost assessments alone.

This theorem challenges standard economic models thatdiscount future risks too heavily, advocating forprecautionary climate policieseven in cases ofuncertain probability distributions.

One of the common challenges in ESG integration is the long time horizon required to assess material ESG factors. Many ESG risks and opportunities unfold over extended periods, whereas traditional investment strategies often focus on short-term financial performance.

For example, climate change mitigation efforts, governance reforms, and improvements in social responsibility may take years to influence financial performance. Some investors, particularly those managing portfolios with shorter holding periods, may find it difficult to align ESG considerations with their investment mandates.

TheStockholm Resilience Centreidentifiesfreshwater useas one of theplanetary boundaries that has already been exceeded, threateningecosystems and biodiversity. Overuse of water resourcesdisrupts natural cyclesand leads todesertification and water scarcity.

Ocean acidification (B) is increasing but has not yetfully crossed the boundary, while ozone depletion (C) has beenpartially reversed due to global policy efforts (e.g., the Montreal Protocol).

ESG assessments of fund managersvary widelybecause different providers useproprietary methodologies, data sources, and weightings. There isno universal standardfor measuring ESG integration across asset managers, leading to inconsistencies in ratings.

For instance,MSCI, Sustainalytics, and FTSE Russellall have different scoring models, leading to variations in ESG rankings for the same fund manager.