Climate transition matrix: assessing carbon performance of companies
摘要
This paper develops a methodology to evaluate climate transition matrices and the role of denominator choice in scaling corporate carbon emissions. Using firm-level data from STOXX Europe 600 constituents between 2015 and 2020, we construct 1-year transition probabilities and extend them to 5-year horizons via stratified bootstrapping. We assess accuracy, temporal stability, and economic relevance of alternative denominators through distance metrics, time-consistency tests, and expected carbon impact. Our results show that Enterprise Value Including Cash (EVIC) provides the most reliable denominator, yielding the lowest distance from empirical benchmarks and the most stable transition structure, while also highlighting persistent high emitters in the upper tail. Market capitalization performs competitively on accuracy but is more sensitive to financial market volatility. These findings have direct implications for portfolio alignment, disclosure, and prudential stress testing under emerging regulatory frameworks such as CSRD, SFDR, and the EU Taxonomy. The study contributes to the literature by bridging statistical evaluation of transition matrices with their financial interpretation, providing investors and regulators with a robust tool to assess corporate decarbonization pathways.