We develop a framework to explore the equilibrium implications of socially responsible investments (SRI). Investors acquire positions in ex-ante identical firms, and firms compete in selling products to consumers. A fraction of investors and consumers are socially responsible in that they value...

This paper presents a model in which cash holding imposes a negative externality because it worsens future adverse selection in markets for long-term assets, which impairs their role for liquidity provision. Adverse selection worsens when potential sellers of long-term assets hold more cash...

"Standard" environmental economics considers emissions trading to be the most effective and efficient policy instrument to meet the emission target. However, a popular view is that tradeable permits should be part of a policy portfolio, including other instruments, to reach this goal. Support...

We discuss how an investment portfolio could dramatically reduce its carbon footprint, potentially even achieving ‘net zero.’ Our central message is that very large carbon reductions are feasible but not as straightforward as some commentators suggest. The usual approach of security...

This paper outlines a simple and robust methodology for portfolio managers to align their portfolios with the carbon neutrality goals (Net Zero Targets) set out following the Paris Agreement in 2015. The approach is based on dynamically limiting the portfolio carbon footprint so that it...

We propose a theory in which each stock's environmental, social, and governance (ESG) score plays two roles: 1) providing information about firm fundamentals and 2) affecting investor preferences. The solution to the investor's portfolio problem is characterized by an ESG-efficient frontier,...

The authors embed Paris Aligned Benchmark (PAB) requirements in an illustrative multi-asset portfolio containing developed and emerging market equities, sovereign bonds, corporate bonds, listed real estate, and commodities. By being PAB compliant, the immediate reduction and ongoing reductions...