For additional information on ESG at AQR, visit aqr.com/esg
Working Paper
Carbon Pricing versus Green Finance
March 14, 2023
We show that green finance should not be used if the carbon price equals its social cost. However, with too low carbon prices, green finance can implement the social optimum if the cost of capital can be controlled and there are no stranded assets. We show explicitly how to "translate" a carbon tax into green finance terms, highlight how green finance should depend on scope 1, 2, and 3 emissions, present its limitations, and illustrate the predictions empirically.
White Paper
How Portfolios Can Impact the Real Economy
February 6, 2023
To help clarify how investors seeking impact through their financial portfolios can affect the direction of corporate decision making, we analyze the two channels of influence – direct control and changing the cost of capital. We argue that there are no other first-order mechanisms for a financial portfolio to have “impact” beyond these. As a real-world example, we apply these insights to the portfolio “net zero” initiative.
Working Paper
Is Capital Structure Irrelevant with ESG Investors?
September 23, 2022
We examine whether capital structure is irrelevant for enterprise value and investment when investors care about ESG issues, which we denote “ESG-Modigliani-Miller” (ESG-MM). Theoretically, we show that ESG-MM holds if ESG is additive and markets are perfect. Empirically, we provide evidence of failure of ESG-MM, implying that firms and governments can exploit non-additive ESG or segmented markets.
Journal Article
ESG Ratings: A Compass without Direction
August 2, 2022
We examine the recent concerns about the reliability of the assessments of ESG ratings providers. We review the demand for ESG information, the stated objectives of ESG ratings providers, how ratings are determined, the evidence of what they achieve, and structural aspects of the industry that potentially influence ratings. We find that while ESG ratings providers may convey important insights into the nonfinancial impact of companies, significant shortcomings exist in their objectives, methodologies, and incentives which detract from the informativeness of their assessments.
News
A Fireside Chat with Cliff Asness and Institutional Investor on ESG Investing
June 9, 2022
AQR Managing and Founding Principal Cliff Asness sat down with Institutional Investor Editor-in-Chief Michael Corcoran to answer some of the key questions on ESG investing. The conversation covered how a quantitative manager can effectively engage with companies, how investors can use their portfolios to help address climate change, why shorting is an effective ESG tool, and more.
Journal Article
Supply Chain Climate Exposure
May 1, 2022
To manage climate risks, investors need reliable climate exposure metrics, but such risks may be difficult to measure, particularly along the supply chain. Using broadly accessible data, we propose an intuitive metric that quantifies the exposure a company has to customers and suppliers. Our metric is related to scope 3 emissions and captures the strength of economic linkages as well as the overall climate exposure of a firm’s customers and suppliers.
White Paper
Looking Forward With Historical Carbon Data
March 14, 2022
Increasingly many allocators are interested in computing their portfolio’s carbon footprint. We show that historical emissions data are useful despite a substantial 1-2 years’ lag typically to when investment portfolios are built.
Perspective
Shorting Counts
February 23, 2022
Man Group recently wrote an op-ed titled “Short-selling does not count as a carbon offset.” Of course we agree it doesn’t. But the headline is quite misleading if taken to mean shorting has no role in the fight to reduce carbon emissions. Shorting does exactly what it’s supposed to do – raise the cost of capital to the emitters, even more so than divestment.
Journal Article
Sustainable Systematic Credit
September 7, 2021
Interest in sustainable investing is now expanding into fixed income. This paper assesses how measures of sustainability/ESG might be relevant for corporate bonds and analyzes how ESG measures can be incorporated into an investment process to achieve the joint object of maximizing risk-adjusted returns and a sustainability target.
Perspective
Shorting Your Way to a Greener Tomorrow
September 7, 2021
It would be an understatement to say there is confusion in the industry about the use of shorting in an ESG context. When it comes to calculating a portfolio’s ESG score, we have heard arguments ranging from "ignore the shorts” to “net them against longs,” and, my favorite as it’s creatively insane, “pretend the shorts are actually longs.” This note explains why it is critical that shorts be properly accounted for, so that investors can use shorting to reduce carbon exposure, to get to net zero or to achieve other ESG goals.