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  • 13 Jul 2017
  • Working Paper Summaries

Catering Through Disclosure: Evidence from Shanghai-Hong Kong Connect

Keywords: by Aaron S. Yoon
  • 09 Mar 2021
  • Working Paper Summaries

Stock Price Reactions to ESG News: The Role of ESG Ratings and Disagreement

Keywords: by George Serafeim and Aaron Yoon; Financial Services
  • 09 Aug 2016
  • Working Paper Summaries

Shareholder Activism on Sustainability Issues

Keywords: by Jody Grewal, George Serafeim, and Aaron Yoon
  • 24 Mar 2015
  • Working Paper Summaries

Corporate Sustainability: First Evidence on Materiality

Keywords: by Mozaffar Khan, George Serafeim & Aaron Yoon; Financial Services
  • 18 Jul 2018
  • Research & Ideas

No More General Tso's? A Threat to 'Knowledge Recombination'

Turmeric is prepared into medicine. Doucefleur In the early 1990s, an Indian plastic surgeon at the University of Mississippi, S. K. Das, was about to amputate the leg of a patient because of a wound that wouldn’t heal. Colleague Hari P.... View Details
Keywords: by Michael Blanding; Health; Food & Beverage; Accounting
  • 11 Sep 2019
  • Research & Ideas

Germany May Have the Answer for Reducing Drug Prices

has been studying health care innovation for more than a decade, conducted her most recent research alongside Aaron S. Kesselheim and Ameet Sarpatwari from the Program on Regulation, Therapeutics, and Law at... View Details
Keywords: by Danielle Kost; Health
  • 23 Apr 2019
  • First Look

New Research and Ideas, April 23, 2019

process of learning from experience. Publisher's link: https://www.hbs.edu/faculty/Pages/item.aspx?num=55991 forthcoming Organization & Environment Assessing the Impact of CEO Activism By: Chatterji, Aaron K., and Michael W. Toffel... View Details
Keywords: Dina Gerdeman
  • 14 Nov 2017
  • First Look

New Research and Ideas: November 14, 2017

experts to discuss how researchers can impact a broader audience, by lending their scientific expertise to pressing social issues, current events, and public debates. The landmark Brown v. Board of Education case, in which the Supreme... View Details
Keywords: Carmen Nobel
  • September 2023
  • Article

Stock Price Reactions to ESG News: The Role of ESG Ratings and Disagreement

By: George Serafeim and Aaron Yoon
We investigate whether ESG ratings predict future ESG news and the associated market reactions. We find that the consensus rating predicts future news, but its predictive ability diminishes for firms with large disagreement between raters. Relation between news and... View Details
Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Disclosure; ESG Ratings; ESG Reporting; ESG Disclosure Metrics; Sustainability; Investments; Disagreement; Rating Disagreement; Ratings; Environmental Sustainability; Social Issues; Corporate Social Responsibility and Impact; Performance; News; Investment; Financial Markets; Stocks; Price
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  • November 2016
  • Article

Corporate Sustainability: First Evidence on Materiality

By: Mozaffar Khan, George Serafeim and Aaron Yoon
Using newly available materiality classifications of sustainability topics, we develop a novel dataset by hand-mapping sustainability investments classified as material for each industry into firm-specific sustainability ratings. This allows us to present new evidence... View Details
Keywords: Sustainability; Investments; Corporate Social Responsibility; Accounting; Corporate Reporting; Regulation; Corporate Social Responsibility and Impact; Integrated Corporate Reporting; Investment; Corporate Governance
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  • 09 Nov 2010
  • First Look

First Look: November 9, 2010

  PublicationsDid Increased Competition Affect Credit Ratings? Authors:Bo Becker and Todd Milbourn Publication:Journal of Financial Economics (forthcoming) Abstract The credit rating industry has historically been dominated by just two... View Details
Keywords: Sean Silverthorne
  • 2022
  • Working Paper

The Evolution of ESG Reports and the Role of Voluntary Standards

By: Ethan Rouen, Kunal Sachdeva and Aaron Yoon
We examine the evolution of ESG reports of S&P 500 firms from 2010 to 2021. The percentage of firms releasing these voluntary disclosures increased from 35% to 86% during this period, although the length of these documents experienced more modest growth. Using a... View Details
Keywords: Voluntary Disclosure; Textual Analysis; Modeling And Analysis; Corporate Social Responsibility and Impact; AI and Machine Learning; Accounting
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  • 2022
  • Article

Which Corporate ESG News Does the Market React To?

By: George Serafeim and Aaron Yoon
Using a dataset that classifies firm-level ESG news as positive and negative, we examine how stock prices react to different types of ESG news. We analyze 111,020 firm-day observations for 3,126 companies and find that prices react only to issues identified as... View Details
Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Ratings; Social Capital; Environment; Sustainability; CSR; Stock Price; Stock Market Expectations; Materiality; Market Reaction; Environmental Sustainability; Governance; Social Issues; Performance; News
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  • 2017
  • Working Paper

Private and Public Disclosures in Countries with Weak Institutional Environments: Evidence from Shanghai-Hong Kong Connect

By: Aaron Yoon
I study firms’ use of disclosure to build investor confidence when they operate in a market where the institutions that support the supply of credible information are weak. Using the announcement of a regulation that allowed foreigners to invest in select Shanghai... View Details
Keywords: Corporate Disclosure; Reputation; Institutional Investing; Trust
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  • January 2024
  • Article

Cost of Exempting Sole Orphan Drugs from Medicare Negotiation

By: Matthew Vogel, Olivia Zhao, William B. Feldman, Amitabh Chandra, Aaron S. Kesselheim and Benjamin N. Rome
Importance: The Inflation Reduction Act (IRA) requires Medicare to negotiate prices for some high-spending drugs but exempts drugs approved solely for the treatment of a single rare disease.
Objective: To estimate Medicare spending and global... View Details
Keywords: Health Care and Treatment; Insurance; Price; Health Industry
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  • 19 Jan 2016
  • First Look

January 19, 2016

changing external conditions, especially reduced experimentation costs. Publisher's link: https://www.hbs.edu/faculty/Pages/item.aspx?num=49008 forthcoming Accounting Review Corporate Sustainability: First Evidence on Materiality By: Khan, Mozaffar, George Serafeim, and... View Details
Keywords: Sean Silverthorne
  • February 2024 (Revised February 2024)
  • Case

CLSA: Integrating ESG in Stock Valuation

By: Shirley Lu, Aaron Yoon and Billy Chan
In 2023, a senior financial analyst at the Hong Kong-based stock brokerage firm CLSA was surprised to see that, based on his calculations, the financial impact from climate risks on a major Indian cement manufacturing company’s projected earnings could be massive.... View Details
Keywords: Accounting; Corporate Governance; Analysis; Stocks; Valuation; Environmental Sustainability; Financial Services Industry; Industrial Products Industry; Hong Kong; China; India; Asia
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  • 24 Mar 2015
  • First Look

First Look: March 24

as concerns and policy interventions. Download working paper: http://www.benedelman.org/publications/pricecoherence-markets-2015-03-12.pdf Corporate Sustainability: First Evidence on Materiality By: Khan, Mozaffar, George Serafeim, and View Details
Keywords: Sean Silverthorne
  • 07 Feb 2017
  • First Look

First Look at New Research: February 7

Prithwiraj, and Do Yoon Kim Abstract—We study the role of ethnic Chinese/Indian migrant inventors in transferring contextual knowledge across borders and the role of ethnic networks in further disseminating such knowledge. Using a unique... View Details
Keywords: Sean Silverthorne
  • 28 Jun 2016
  • First Look

June 28, 2016

raise funds from outside investors. The relationship appears not to be causal but instead driven by selection effects across heterogeneous teams with varying degrees of inequality aversion. Publisher's link:... View Details
Keywords: Sean Silverthorne

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