The corporate consulting company Mercer, in collaboration with institutional investors, industry groups, other consultants, and individuals, issued a report in February 2011 analyzing the impact of climate change on institutional investment portfolios. The report, entitled "Climate Change Scenarios—Implications for Strategic Asset Allocation," also offers a series of factors to consider in making investment allocation decisions.

The report evaluates asset allocation and investment issues under four different scenarios, ranging from the status quo with little action to address climate change, to an aggressive response with a high degree of economic transformation across the global economy. Key findings include the following: (1) private sector response to climate change may produce a substantial number of new investment opportunities in low carbon technologies, in the range of $3 trillion to $5 trillion by 2030; (2) the cumulative economic cost of changes to the physical environment, health, and food security could be in the range of $2 trillion to $4 trillion by 2030; (3) asset allocation to sustainable equities, efficiency/renewable assets, timberland, and agriculture land could improve portfolio resilience; and (4) the health impacts and population migration risks of climate change are underestimated.