The logic of net zero investment portfolios: positioning long-term investors for financial outperformance

Carter B. Casady and Ashby Monk

Journal of Sustainable Finance & Investment, 2026, vol. 16, issue 1, 210-236

Abstract: The transition to a net zero carbon economy is imperative for mitigating the impacts of climate change. Although net-zero investing is still emerging, initiatives such as the Net-Zero Asset Owner Alliance (NZAOA) have set ambitious interim emission-reduction targets. This paper theoretically examines the strategies adopted by the world's largest long-term investors to achieve net zero emissions in their portfolios by 2050 or earlier. By systematically reviewing the net zero plans of 33 global asset owners, this paper identifies four primary approaches: divestment from high-emitting assets, re-weighting investments based on carbon exposure, reducing emissions in existing investments through stewardship and retrofits, and investing in net zero or net-negative emissions solutions. The effectiveness, advantages, and limitations of each investment strategy are analyzed, along with their impact on portfolio emissions, the real economy, and portfolio performance. The paper concludes with strategic recommendations to help asset owners design and implement credible net-zero pathways.

Date: 2026
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DOI: 10.1080/20430795.2025.2514189

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