Publications

January 2022
Article

Why is Corporate Virtue in the Eye of The Beholder? The Case of ESG Ratings

By: Dane Christensen, George Serafeim and Anywhere Sikochi

Despite the rising use of environmental, social, and governance (ESG) ratings, there is substantial disagreement across rating agencies regarding what rating to give to individual firms. As what drives this disagreement is unclear, we examine whether a firm’s ESG... View Details

Keywords: ESG Ratings; Rating Agency Disagreement; ESG Disclosure; Corporate Social Responsibility; Sustainability; Corporate Social Responsibility and Impact; Environmental Sustainability; Corporate Disclosure

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2016
Working Paper

Shareholder Activism on Sustainability Issues

By: Jody Grewal, George Serafeim and Aaron Yoon

Shareholder activism on sustainability issues has become increasingly prevalent over the years, with the number of proposals filed doubling from 1999 to 2013. We use recent innovations in accounting standard setting to classify 2,665 shareholder proposals that address... View Details

Keywords: Sustainability; Activism; Activist Investors; Activist Shareholder; Corporate Social Responsibility; Environment; Corporate Performance; Corporate Accountability; Corporate Social Responsibility and Impact; Performance; Environmental Sustainability; Corporate Governance; Business and Shareholder Relations; Investment Activism

SSRN

04 Feb 2002
Research & Ideas

How To Do Business in Islamic Countries

Islamic finance and an emeritus professor of investment banking at Harvard Business School. Hayes, who continues to travel regularly to Islamic countries for research and consulting, offered advice to HBS students on January 23 as part of... View Details

Keywords: by Martha Lagace

16 Feb 2023
HBS Case

ESG Activists Met the Moment at ExxonMobil, But Did They Succeed?

The impact-investment hedge fund Engine No. 1 made a big splash in May 2021 when it managed to get three nominees elected to the ExxonMobil board of directors. It was an open effort to prod the oil giant toward renewable energy and test whether activist investing could... View Details

Keywords: by Lane Lambert; Financial Services

Web

Advisory Board - Entrepreneurship

an M.B.A. from Harvard Business School, an M.P.A. from Harvard University’s John F. Kennedy School of Government and a B.A. in Economics from the University of California, Berkeley. She serves on the Advisory Board of Harvard Business... View Details

April 2013 (Revised June 2016)
Case

AIG and the American Taxpayers (A)

By: Karthik Ramanna and Matthew Shaffer

Explores the decision faced by AIG's board on whether to join shareholder and ex-CEO Maurice Greenberg's lawsuit against the U.S. government. The suit, argued by super-lawyer David Boies (of Bush v. Gore and California Gay Marriage fame), claims that in September 2008... View Details

Keywords: Property Rights; Financial Institutions; Financial Markets; Financial Crisis; Property; Insurance Industry; United States

2025
Working Paper

Tax Elasticities of Top Donors: Evidence from Family Foundations

By: Simon Essig Aberg

High net-worth donors who give through a family foundation or donor-advised fund constitute the fastest growing segment of charitable giving in the United States. Using a novel database of foundation tax filings, I document facts about top donors, estimate how they... View Details

Keywords: Philanthropy and Charitable Giving; Taxation; Motivation and Incentives

SSRN

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April 2007
Case

Microfinance in Bolivia: A Meeting with the President of the Republic

By: Michael Chu

Herbert Muller, chair of leading microfinance bank BancoSol, has met with Evo Morales one year after the populist leader's inauguration as president of Bolivia and proceeds to write an email to his fellow board directors. The bank is world famous for pioneering... View Details

Keywords: Risk and Uncertainty; Race; Government Administration; Business and Government Relations; Microfinance; Poverty; Interest Rates; Banks and Banking; Financial Services Industry; Bolivia; South America

2024
Working Paper

Voting Rules, Turnout, and Economic Policies

By: Enrico Cantoni, Vincent Pons and Jérôme Schäfer

In recent years, voter ID laws and convenience voting have generated heated partisan debates. To shed light on these policy issues, we survey the recent evidence on the institutional determinants and effects of voter turnout and broaden the perspective beyond the most... View Details

Keywords: Voting; Political Elections; Policy

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September 2020
Teaching Note

TransDigm in 2017: The Beginning of the End or the End of the Beginning?

By: Benjamin C. Esty and Daniel Fisher

Teaching Note for HBS Case No. 720-422. TransDigm was a highly acquisitive company that manufactured a wide range of highly engineered aerospace parts for both military and commercial customers. Over the ten years ending in 2016, its stock price had increase ten times,... View Details

1999
Chapter

Multinational Cross-Investment between Switzerland and Britain 1914-1945

By: G. Jones

This chapter examines multinational cross-investment between Switzerland and Great Britain between 1914 and 1945. While Great Britain and Switzerland were both major home economies for multinationals,few companies from either country were interested in investing in the... View Details

Keywords: History; Multinational Firms and Management; International Relations; Investment; Great Britain; Switzerland

August 2024 (Revised February 2025)
Case

Novo Nordisk Foundation

By: Debora L. Spar and Julia M. Comeau

In 2024, Novo Nordisk A/S was one of the most profitable firms in the world, thanks largely to just two GLP-1-based drugs, Ozempic and Wegovy. Unusually, this incredibly profitable firm was controlled not by individual private shareholders, but by a non-profit... View Details

Keywords: Pharmaceutical Companies; Diabetes; Obesity; Foundation; Non-profit Management; Profit; Corporate Governance; Business or Company Management; Corporate Social Responsibility and Impact; Expansion; Philanthropy and Charitable Giving; Nonprofit Organizations; Pharmaceutical Industry; Denmark; Europe

August 2014
Article

Mortgage Convexity

By: Samuel G. Hanson

Most home mortgages in the United States are fixed-rate loans with an embedded prepayment option. When long-term rates decline, the effective duration of mortgage-backed securities (MBS) falls due to heightened refinancing expectations. I show that these changes in MBS... View Details

Keywords: Mortgages; Interest Rates; Volatility

Web

Bankruptcy | Baker Library | Bloomberg Center | Harvard Business School

triggered by the popping of the overall housing bubble; which had, in turn, been fueled by the ability of these firms, as well as commercial banks, to finance so many mortgages in the first place.” [20] One of the early indicators of the... View Details

March 2018
Case

Chaudhary Group: Rebuilding Nepal

By: Christopher J. Malloy, Lauren H. Cohen and Inakshi Sobti

After the 2015 Nepal earthquake, the Chaudhary Group, a billion-dollar conglomerate in Nepal, decides to play a pivotal role in rebuilding the country. The Group's philanthropic arm (Chaudhary Foundation) works with stakeholders and develops a blue print for short- and... View Details

22 Aug 2005
Research & Ideas

Restoring a Global Economy, 1950–1980

1970s, but its governments systematically discouraged wholly owned FDI [foreign direct investment], and restricted it to a low level. During the 1940s and early 1950s only the U.S. dollar was available as a major convertible currency.... View Details

Keywords: by Geoffrey Jones

April 2021 (Revised April 2022)
Case

OneTen: One Million Opportunities in Ten Years

By: V. Kasturi Rangan and Courtney Han

In the wake of George Floyd's killing in May 2020, and widespread protests for social justice in the United States, OneTen was formed by a coalition of 40 large companies to provide one million jobs for African-Americans in 10 years. The case describes the background... View Details

Keywords: Labor Market; COVID-19 Pandemic; Diversity; Race; Jobs and Positions; Opportunities; Social Issues; Employment; Equality and Inequality; Equity; United States

March 2023 (Revised September 2023)
Case

Patagonia: 'Earth Is Now Our Only Shareholder'

By: Brian Trelstad, Nien-hê Hsieh, Michael Norris and Susan Pinckney

In September 2022, Yvon Chouinard, the iconoclastic founder of outdoor apparel company Patagonia, announced a new ownership model for his company. Chouinard and his family had held complete control of the company's voting and non-voting stock since its founding 50... View Details