Publications

March 2022 (Revised April 2022)
Case

MTN: Unlocking Value While Driving Socioeconomic Progress

By: Benjamin C. Esty, Pippa Tubman Armerding and Dilyana Karadzhova Botha

On March 10, 2021, Ralph Mupita the new CEO of MTN Group, Africa's largest telecommunications company, presented the group’s 2020 annual results and unveiled a new strategy to “drive growth and unlock value.” Despite MTN’s leadership in most of its markets, the... View Details

Keywords: Decision Making; Goals and Objectives; Valuation; Emerging Markets; Business Strategy; Financial Management; Information Technology; Corporate Finance; Telecommunications Industry; Africa; South Africa; Ghana; Nigeria

Due to network effects and switching costs in platform markets, entrants generally must offer revolutionary functionality. Platform envelopment offers a second entry path: one that does not rely upon Schumpeterian innovation. Examples of successful envelopment... View Details

April 2024
Case

Michelin in Motion: Putting Purpose to Work

By: Hubert Joly, Nitin Nohria and Emilie Billaud

When he became CEO, facing limited growth prospects, a low valuation, and therefore a stagnating share price, Menegaux and his team launched a set of initiatives to reposition Michelin. These included (1) articulating a clear purpose (“We care about giving people a... View Details

December 2008 (Revised February 2017)
Case

Olam International

By: David E. Bell and Mary Shelman

In 20 years, Sunny Verghese had built Singapore-based Olam International from a small Nigerian export company into a $5 billion global leader in agricultural commodities with a core competence in Africa. Olam's growth had come by pursuing product and geographic... View Details

Keywords: Financial Crisis; Trade; Growth and Development Strategy; Supply Chain; Expansion; Agriculture and Agribusiness Industry; Africa; Singapore

2010
Book

The New Science of Retailing: How Analytics Are Transforming the Supply Chain and Improving Performance

By: Marshall Fisher and Ananth Raman

Retailers today are drowning in data but lacking in insight: They have huge volumes of information at their disposal. But they're unsure of how to sort through it and use it to make smart decisions. The result? They're struggling with profit-sapping supply chain... View Details

Keywords: Profit; Knowledge Use and Leverage; Logistics; Supply Chain Management; Mathematical Methods; Retail Industry

Find at Harvard

January 2020 (Revised July 2020)
Case

Chemours (A)

By: David G. Fubini and David Lane

The July 2015 spin-off of DuPont’s performance chemicals division as the independent company Chemours burdened new CEO Mark Vergnano and his team with perilous challenges. Despite market-leading offerings in several areas, the company faced a glutted market for its... View Details

Keywords: Transformation; Chemicals; Leading Change; Crisis Management; Organizational Change and Adaptation; Chemical Industry; United States

15 Feb 2013
Working Paper Summaries

Expectations of Returns and Expected Returns

Keywords: by Robin Greenwood & Andrei Shleifer; Financial Services

2010
Chapter

The Euro as a Reserve Currency for Global Investors

By: Luis M. Viceira and Ricardo Gimeno

This article explores the demand for the euro for risk management purposes and the evidence of stock market integration in the euro area. We define a reserve currency as one that investors demand either because it helps them hedge real interest risk and inflation risk,... View Details

Keywords: Volatility; Inflation and Deflation; Capital Markets; Currency; Stocks; Financial Markets; Financing and Loans; Investment Return; Investment Portfolio; Risk Management

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17 Apr 2012
Working Paper Summaries

Technology Choice and Capacity Portfolios Under Emissions Regulation

Keywords: by David Drake, Paul R. Kleindorfer & Luk N. Van Wassenhove

Forthcoming
Article

Who Values Democracy?

By: Max Miller

This paper examines the conventional view that redistribution is central to the democratization process using data from stock markets. Consistent with this view, democratizations have a large, negative impact on asset valuations driven by a rise in redistribution risk.... View Details

Keywords: Government and Politics; Risk and Uncertainty; Financial Crisis; Macroeconomics; Financial Markets; Valuation

October 2019 (Revised August 2020)
Case

Souqalmal: The Choice Is Yours (A)

By: V.G. Narayanan and Alpana Thapar

This case describes how Ambareen Musa, Founder and CEO of Souqalmal, a Dubai-based online comparison aggregator of banking and insurance products launched her business in 2011 and rapidly grew it over next couple of years. However, by 2017, the Mauritian entrepreneur... View Details

Keywords: Unit Economics; Finance; Accounting; Competitive Strategy; Financial Statements; Insurance Industry; Middle East

13 Dec 2014
News

The openness revolution

Research Summary

Overview

Navid has worked with different organizations across various industries, from the Federal Reserve to medical device manufacturers, heavy construction equipment sellers, and B2B software providers, to assemble proprietary datasets in studying organizational buying.... View Details

2009
Working Paper

Running Out of Numbers: Scarcity of IP Addresses and What to Do About It

By: Benjamin Edelman

The Internet's current numbering system is nearing exhaustion: Existing protocols allow only a finite set of computer numbers ("IP addresses"), and central authorities will soon deplete their supply. I evaluate a series of possible responses to this shortage: Sharing... View Details

Keywords: Policy; Resource Allocation; Market Transactions; Internet; Technology Networks; Technology Industry; Telecommunications Industry

05 Jul 2006
First Look

First Look: July 5, 2006

Working PapersThe Framing Effect of Price Format Marco Bertini and Luc Wathieu Existing evidence suggests that preferences are affected by whether a price is presented as one all-inclusive expense or... View Details

Keywords: Sean Silverthorne

2017
Chapter

Innovation Policies

By: Ramana Nanda and Matthew Rhodes-Kropf

Past work has shown that failure tolerance by principals has the potential to stimulate innovation, but has not examined how this affects which projects principals will start. We demonstrate that failure tolerance has an equilibrium price – in terms of an investor’s... View Details

Keywords: Innovation; Investing; Abandonment Option; Failure Tolerance; Innovation and Invention; Venture Capital; Attitudes; Investment; Failure

2017
Working Paper

Innovation Policies

By: Ramana Nanda and Matthew Rhodes-Kropf

Past work has shown that failure tolerance by principals has the potential to stimulate innovation, but has not examined how this affects which projects principals will start. We demonstrate that failure tolerance has an equilibrium price ― in terms of an investor's... View Details

Keywords: Innovation; Investing; Abandonment Option; Failure Tolerance; Venture Capital; Attitudes; Investment; Failure; Innovation and Invention

SSRN

2002
Other Unpublished Work

Market Liquidity as a Sentiment Indicator

By: Malcolm Baker and Jeremy Stein

We build a model that helps to explain why increases in liquidity—such as lower bid–ask spreads, a lower price impact of trade, or higher turnover—predict lower subsequent returns in both firm-level and aggregate data. The model features a class of irrational... View Details

Keywords: Price; Financial Liquidity; Trade; Valuation; Markets; Forecasting and Prediction; Equity; Stock Shares; Investment Return

November 2017
Article

Credit-Induced Boom and Bust

By: Marco Di Maggio and Amir Kermani

Can a credit expansion induce a boom and bust in house prices and real economic activity? This paper exploits the federal preemption of national banks in 2004 from local laws against predatory lending to gauge the effect of the supply of credit on the real economy.... View Details

Keywords: Great Recession; Subprime; Credit Supply; Credit Expansion; Household Leverage; Household Debt; Preemption Rule; Mortgages; Laws and Statutes; Credit; Household; Borrowing and Debt; Economic Slowdown and Stagnation