Publications

26 Jul 2016
Working Paper Summaries

The Impact of the Entry of Biosimilars: Evidence from Europe

Keywords: by Fiona Scott Morton, Ariel Dora Stern, and Scott Stern; Health; Biotechnology; Pharmaceutical

09 Nov 2011
Working Paper Summaries

CEO Bonus Plans: And How to Fix Them

Keywords: by Kevin J. Murphy & Michael C. Jensen

2021
Working Paper

Time and the Value of Data

By: Ehsan Valavi, Joel Hestness, Newsha Ardalani and Marco Iansiti

Managers often believe that collecting more data will continually improve the accuracy of their machine learning models. However, we argue in this paper that when data lose relevance over time, it may be optimal to collect a limited amount of recent data instead of... View Details

Keywords: Economics Of AI; Machine Learning; Non-stationarity; Perishability; Value Depreciation; Analytics and Data Science; Value

SSRN

17 May 2011
Working Paper Summaries

The Consequences of Mandatory Corporate Sustainability Reporting

Keywords: by Ioannis Ioannou & George Serafeim

September 2020 (Revised June 2023)
Exercise

Artea: Designing Targeting Strategies

By: Eva Ascarza and Ayelet Israeli

This collection of exercises aims to teach students about 1)Targeting Policies; and 2)Algorithmic bias in marketing—implications, causes, and possible solutions. Part (A) focuses on A/B testing analysis and targeting. Parts (B),(C),(D) Introduce algorithmic bias. The... View Details

August 2021
Supplement

Shorefast: A Strange and Familiar Way to Reimagine Capitalism: Zita Cobb, Founder and CEO

By: Brian Trelstad

Video Supplement for HBS Case No. 320-098. In 2006, Zita Cobb and two of her brothers, Alan Cobb and Tony Cobb, native Newfoundlanders, launched Shorefast to help grow another leg of Fogo Island’s economy. Like so many rural communities, Fogo Island’s fate was tied... View Details

Keywords: Place Making; Nonprofit; Hotel; Economic Development; Tourism; Social Entrepreneurship; Nonprofit Organizations; Development Economics; Economic Systems; Tourism Industry; Canada

23 Jan 2013
Working Paper Summaries

Cost of Capital Dynamics Implied by Firm Fundamentals

Keywords: by Matthew Lyle & Charles C.Y. Wang

August 2020 (Revised May 2021)
Case

PayPal: The Next Chapter

By: Michael Porter, Mark Kramer and Annelena Lobb

Can a social purpose and stakeholder capitalism confer a powerful competitive advantage in the age of COVID-19? For PayPal, the answer is yes. After spinning off from eBay in a 2015 IPO, the company declared its purpose as "democratizing financial services" by ensuring... View Details

Keywords: Mission and Purpose; Finance; Business and Stakeholder Relations; Social Entrepreneurship; Competitive Advantage; Financial Services Industry

August 2014 (Revised March 2016)
Case

Thomas Cook Group on the Brink (A)

By: Benjamin C. Esty, Stuart C. Gilson and Aldo Sesia

Harriett Green, the newly appointed CEO of Thomas Cook Group, faces a daunting set of business and financial challenges at the 171-year old UK travel services company. The company has lost almost £600 million in the last three quarters; has seen its stock price fall... View Details

Keywords: Turnaround; Corporate Restructuring; Change Leadership; Female Ceo; Change Management; Communication Strategy; Borrowing and Debt; Cash Flow; Cost Management; Financial Liquidity; Financial Management; Executive Compensation; Leading Change; Crisis Management; Value Creation; Travel Industry; United Kingdom

25 May 2020
Research & Ideas

Has Occupational Licensing Outlived Its Usefulness?

Informing consumers and restricting bad apples: that’s the dual role that occupational licensing is supposed to play. If a plumber, painting contractor, or HVAC repairer has a license it should matter to consumers wanting their services,... View Details

Keywords: by Martha Lagace; Service

June 2004
Article

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: Markets; Financial Liquidity; Price; Trade; Sales; Equity; Information; Management Analysis, Tools, and Techniques; Accounting Industry

Find at Harvard

December 2023
Article

Advances in Power-to-Gas Technologies: Cost and Conversion Efficiency

By: Gunther Glenk, Philip Holler and Stefan Reichelstein

Widespread adoption of hydrogen as an energy carrier is widely believed to require continued advances in Power-to-Gas (PtG) technologies. Here we provide a comprehensive assessment of the dynamics of system prices and conversion efficiency for three currently prevalent... View Details

Randolph B. (Randy) Cohen is the MBA Class of 1975 Senior Lecturer of Entrepreneurial Management in the Finance Unit at Harvard Business School. Cohen’s main research focus has been the identification of top investment managers and the prediction of manager... View Details

Keywords: financial services; investment banking industry

Blog Post

Health Care Transparency: The Fox Is Guarding the Chicken Coop in Washington Again

By: Regina E. Herzlinger

Now that more people can shop directly for their own health insurance under the Affordable Care Act, they have been transformed from potential patients to consumers, and like any other consumers of goods or services, they want to know if what they're buying is any... View Details

Keywords: Transparency; Health Care; Health Insurance; Health Care and Treatment; Health Industry

04 Dec 2012
First Look

First Look: December 4

opportunity to launch a new venture that would use SMS to deliver crop price information to farmers in India. The case describes the structure of Indian agriculture and the problems experienced by farmers,... View Details

Keywords: Carmen Nobel

October 2000 (Revised December 2004)
Case

Richard Spellman (A)

Describes Richard Spellman's decision to leave his existing employer and join an Internet start-up as CEO. Focuses on the terms of a restricted stock agreement and employment agreement that must be negotiated. Includes first drafts of these two agreements. View Details

Keywords: Contracts; Agreements and Arrangements; Internet and the Web; Executive Compensation; Personal Development and Career; Business Startups; Management Teams

May 2012
Article

Complicated Firms

By: Lauren Cohen and Dong Lou

We exploit a novel setting in which the same piece of information affects two sets of firms: one set of firms requires straightforward processing to update prices, while the other set requires more complicated analyses to incorporate the same piece of information into... View Details

Keywords: Investment Portfolio; Information; Price; Forecasting and Prediction; Complexity; Mathematical Methods

Find at Harvard

2005
Other Unpublished Work

Corporate Financing Decisions When Investors Take the Path of Least Resistance

By: Malcolm Baker, Joshua Coval and Jeremy Stein

We explore the consequences for corporate financial policy that arise when investors exhibit inertial behavior. One implication of investor inertia is that, all else equal, a firm pursuing a strategy of equity-financed growth will prefer a stock-for-stock merger to... View Details

Keywords: Decisions; Behavior; Stocks; Mergers and Acquisitions; Policy; Investment; Financial Institutions; Equity; Corporate Finance