Publications

March 2010
Article

Information Content of Insider Trades before and after the Sarbanes-Oxley Act

By: Francois Brochet

This paper examines the information content of Form 4 filings under the more timely disclosure regime introduced by Section 403 of the Sarbanes-Oxley Act of 2002 (SOX). Abnormal returns and trading volumes around filings of insider stock purchases are significantly... View Details

Keywords: Stocks; Corporate Disclosure; Governing Rules, Regulations, and Reforms; Government Legislation; Lawsuits and Litigation; Market Transactions; Volume; Sales

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June 2013 (Revised September 2015)
Case

Procter & Gamble

By: Jay W. Lorsch and Kathleen Durante

On July 12, 2012, Bill Ackman's Pershing Square Capital Management announced publicly that it had purchased about $2 billion of Procter and Gamble (P&G) stock. Shares in the company closed up 3.75% the day the disclosure was made public. Ackman told the New York... View Details

Keywords: Ackman; P＆G; Pershing Square Capital Managment; Disruption; Management Succession; Crisis Management; Acquisition; Consumer Products Industry; Financial Services Industry

April 2022
Article

Demand Interactions in Sharing Economies: Evidence from a Natural Experiment Involving Airbnb and Uber/Lyft

By: Shunyuan Zhang, Dokyun Lee, Param Singh and Tridas Mukhopadhyay

We examine whether and how ride-sharing services influence the demand for home-sharing services. Our identification strategy hinges on a natural experiment in which Uber/Lyft exited Austin, Texas, in May 2016 due to local regulation. Using a 12-month longitudinal... View Details

Keywords: Airbnb; Uber; Natural Experiment; Geographic Demand Dispersion; Sharing Economy; Transportation; Demand and Consumers; Geographic Scope

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May 2014
Case

Health Care Accountability: Examples in Cancer Treatment

By: Regina E. Herzlinger and Natalie Kindred

This case is designed to support a discussion of the importance of outcomes evidence in empowering the public to make better health care decisions, the desired level of transparency and accountability for health care providers, and the issues with current measuring and... View Details

Keywords: Accountability; Health Care; Cancer; Cancer Treatment; Memorial Sloan Kettering Cancer Center; Cancer Treatment Centers Of America; Vantage Oncology; Radiology; Risk Adjustment; Treatment Outcomes; Health Care Outcomes; Prostate Cancer; Transparency; Health Care and Treatment; Risk Management; Outcome or Result; Health Industry; United States

27 Mar 2018
First Look

First Look at New Research, March 27, 2018

capabilities. We conclude that incumbent firms have an advantage in innovating in this setting. Download working paper: https://www.hbs.edu/faculty/Pages/item.aspx?num=54282 The Impact of CEOs in the Public Sector: Evidence from the... View Details

Keywords: Sean Silverthorne

30 Apr 2009
Working Paper Summaries

Earnings Quality and Ownership Structure: The Role of Private Equity Sponsors

Keywords: by Sharon P. Katz; Financial Services

03 Dec 2018
Research & Ideas

How Companies Can Increase Market Rewards for Sustainability Efforts

flavijus For the first time, a link has been drawn between public sentiment about a company’s sustainability practices and how that company is valued in the market. The results are important both for investors searching for under-valued,... View Details

Keywords: by Rachel Layne

July 2021 (Revised October 2021)
Case

Trouble at Basecamp: Managing Politics, Polarization, and Conflict in the Workplace (A)

By: Nour Kteily, Deepak Malhotra and David Lane

As founders of the software company Basecamp, Jason Fried and David H. Hansson were used to being the subjects of social media attention. Both maintained active and dedicated Twitter followings for their unique perspectives on management and life. But on April 26,... View Details

February 2021
Article

Topic Classification of Electric Vehicle Consumer Experiences with Transformer-Based Deep Learning

By: Sooji Ha, Daniel J Marchetto, Sameer Dharur and Omar Isaac Asensio

The transportation sector is a major contributor to greenhouse gas (GHG) emissions and is a driver of adverse health effects globally. Increasingly, government policies have promoted the adoption of electric vehicles (EVs) as a solution to mitigate GHG emissions.... View Details

Keywords: Natural Language Processing; Analytics and Data Science; Environmental Sustainability; Infrastructure; Transportation; Policy

Article

Operational Efficiency and Effective Management in the Catheterization Laboratory

By: Grant W. Reed, Michael L. Tushman and Samir R. Kapadia

Operational efficiency is a core business principle in which organizations strive to deliver high-quality goods or services in a cost-effective manner. This concept has become increasingly relevant to cardiac catheterization laboratories, as insurers move away from... View Details

Keywords: Cath Lab; Catheterization Laboratory; Health Care and Treatment; Performance Efficiency; Management; Performance Productivity; Cost Management; Health Industry

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02 Apr 2019
First Look

New Research and Ideas, April 2, 2019

to their accounting reports following CLs. Our results indicate that disclosure of regulatory oversight activities can strengthen public enforcement. Publisher's link:... View Details

Keywords: Dina Gerdeman

January 2018 (Revised May 2018)
Case

AT&T Managing Technological Change and the Future of Telephone Operators in the 20th Century

By: Daniel P. Gross and William R. Kerr

By the 1930s, AT&T dominated the American phone industry, serving 10 million telephones and employing over 100,000 switchboard operators. But beginning in the mid-1910s, the company began changing from manually operated switchboards to mechanical switching systems that... View Details

Keywords: AT＆T; Bell Telephone; Phone Lines; Phone Operators; Mechanical Switching; Layoffs; Technological Change; Transition; History; Innovation and Invention; Technological Innovation; Information Technology; Disruption; Change Management; Communications Industry; Telecommunications Industry; United States

12 Nov 2001
Research & Ideas

Facing the New World Order

Published since 1979 by the World Economic Forum, the Global Competitiveness Report ranks seventy-five countries and measures the comparative strengths and weaknesses of their economies. At a press conference announcing View Details

Keywords: by Staff

2016
Working Paper

Refugee Resettlement

By: David Delacretaz, Scott Duke Kominers and Alexander Teytelboym

Over 100,000 refugees are permanently resettled from refugee camps to hosting countries every year. Nevertheless, refugee resettlement processes in most countries are ad hoc, accounting for neither the priorities of hosting communities nor the preferences of refugees... View Details

Keywords: Refugees; Marketplace Matching; Mathematical Methods