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Working Paper
Do Sustainable Investment Strategies Hedge Climate Change Risks? Evidence from Germany's Carbon Tax
It is difficult to assess the effectiveness of investment strategies that screen companies based on environmental criteria to hedge climate change risk because physical risks have not yet fully materialized and policies to combat climate change are usually widely anticipated. This paper sidesteps these limitations by analyzing the stock market response to plausibly exogenous changes in expectations about the level of a carbon tax in Germany. The risk-adjusted return on two sustainable investment approaches---screening companies based on environmental scores and on firms' carbon ...