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- Faculty Publications (36)
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- All HBS Web (231)
- Faculty Publications (36)
- June 2017
- Case
AT&T Versus Verizon: A Financial Comparison
By: V.G. Narayanan and Joel L. Heilprin
This case asks students to prepare a report comparing the financial and operating performance of AT&T and Verizon. Taking the perspective of a communications industry analyst, they must also consider the differences between and implications of the companies' business... View Details
Keywords: Financial Statements; Operations; Analysis; Business Model; Accounting; Performance Effectiveness; Telecommunications Industry
Narayanan, V.G., and Joel L. Heilprin. "AT&T Versus Verizon: A Financial Comparison." Harvard Business School Brief Case 917-543, June 2017.
- February 2017
- Article
The Effect of Prohibiting Deal Protection on M&A Activity: Evidence from the United Kingdom
By: Fernán Restrepo and Guhan Subramanian
Since 2011, the UK has prohibited all deal protections—including termination fees—in M&A deals. Prior to 2011, the UK permitted termination fees up to 1% of deal value and there was no prohibition on other protection devices. We examine the effect of this regulatory... View Details
Restrepo, Fernán, and Guhan Subramanian. "The Effect of Prohibiting Deal Protection on M&A Activity: Evidence from the United Kingdom." Journal of Law & Economics 60, no. 1 (February 2017): 75–113.
- September 2016
- Article
Value Based Care and Bundled Payments: Anesthesia Care Costs for Outpatient Oncology Surgery Using Time-driven Activity-based Costing
By: Katy E. French, Alexis B. Guzman, Augustin C. Rubio, John C. Frenzel and Thomas Feeley
Background:
With the movement towards bundled payments, stakeholders should know the true cost of the care they deliver. Time-driven activity-based costing (TDABC) can be used to estimate costs for each episode of care. In this analysis, TDABC is used to both... View Details
French, Katy E., Alexis B. Guzman, Augustin C. Rubio, John C. Frenzel, and Thomas Feeley. "Value Based Care and Bundled Payments: Anesthesia Care Costs for Outpatient Oncology Surgery Using Time-driven Activity-based Costing." Healthcare: The Journal of Delivery Science and Innovation 4, no. 3 (September 2016): 173–180.
- April 2024
- Article
Model-based Financial Regulations Impair the Transition to Net-zero Carbon Emissions
By: Matteo Gasparini, Matthew C. Ives, Ben Carr, Sophie Fry and Eric Beinhocker
Investments via the financial system are essential for fostering the green transition. However, the role of existing financial regulations in influencing investment decisions is understudied. Here we analyse data from the European Banking Authority to show that... View Details
Gasparini, Matteo, Matthew C. Ives, Ben Carr, Sophie Fry, and Eric Beinhocker. "Model-based Financial Regulations Impair the Transition to Net-zero Carbon Emissions." Nature Climate Change 14, no. 5 (April 2024): 434–435.
- January 2008
- Background Note
Convertible Arbitrage
By: Joshua Coval and Erik Stafford
The goal of this simulation is to understand how convertible bonds can be viewed as a portfolio of simpler securities and to introduce an over-the-counter market. The convertible bonds that are available during the simulation are at-the-money and in-the-money so that... View Details
Coval, Joshua, and Erik Stafford. "Convertible Arbitrage." Harvard Business School Background Note 208-116, January 2008.
- October 2012 (Revised July 2013)
- Case
Olympus (A)
By: Jay W. Lorsch, Suraj Srinivasan and Kathleen Durante
As 2012 approached, the woes of the financial crisis seemed to be fading, companies were resuming business as usual, and some of the scrutiny on corporate governance practices began to recede as well. That is until another major financial scandal emerged in Japan in... View Details
Lorsch, Jay W., Suraj Srinivasan, and Kathleen Durante. "Olympus (A) ." Harvard Business School Case 413-040, October 2012. (Revised July 2013.)
- November–December 2015
- Article
Active Postmarketing Drug Surveillance for Multiple Adverse Events
By: Joel Goh, Margrét V. Bjarnadóttir, Mohsen Bayati and Stefanos A. Zenios
Postmarketing drug surveillance is the process of monitoring the adverse events of pharmaceutical or medical devices after they are approved by the appropriate regulatory authorities. Historically, such surveillance was based on voluntary reports by medical... View Details
Keywords: Drug Surveillance; Health Care; Stochastic Models; Queueing; Diffusion Approximation; Brownian Motion; Health Care and Treatment; Analytics and Data Science; Analysis
Goh, Joel, Margrét V. Bjarnadóttir, Mohsen Bayati, and Stefanos A. Zenios. "Active Postmarketing Drug Surveillance for Multiple Adverse Events." Operations Research 63, no. 6 (November–December 2015): 1528–1546. (Finalist, 2012 INFORMS Health Applications Society Pierskalla Award.)
- March 2009 (Revised July 2010)
- Case
State Street Corporation
To maximize their effectiveness, color cases should be printed in color. State Street Corp. reports a 13% gain in EPS in 2008 amidst a global financial crisis. The stock price declines 59% on the day of the earnings report. This one day decline was exceeded in the... View Details
Keywords: Fair Value Accounting; Financial Reporting; Financial Crisis; Financial Liquidity; Financial Markets; Crisis Management; Financial Services Industry
Fruhan, William E. "State Street Corporation." Harvard Business School Case 209-112, March 2009. (Revised July 2010.)
- May 2021
- Case
Inclusive Innovation at Mass General Brigham
By: Katherine Baldiga Coffman and Olivia Hull
Massachusetts General Brigham (MGB) Chief Innovation Officer Christopher Coburn had overseen a period of exciting transformation and growth in healthcare innovation at MGB. In November 2019, the health system was the largest recipient of National Institutes of Health... View Details
Keywords: Inclusion; Innovation; Invention; Gender; Business Startups; Investment Funds; Private Equity; Health Care and Treatment; Innovation Strategy; Technological Innovation; Intellectual Property; Copyright; Patents; Research; Research and Development; Diversification; Technology; Health Industry; Massachusetts; Boston
Coffman, Katherine Baldiga, and Olivia Hull. "Inclusive Innovation at Mass General Brigham." Harvard Business School Case 921-006, May 2021.
- September 2020
- Article
Medicaid Work Requirements in Arkansas: Two-Year Impacts on Coverage, Employment, and Affordability of Care
By: Benjamin D. Sommers, Lucy Chen, Robert J. Blendon, E. John Orav and Arnold M. Epstein
In June 2018 Arkansas became the first U.S. state to implement work requirements in Medicaid, requiring adults ages 30–49 to work twenty hours a week, participate in “community engagement” activities, or qualify for an exemption to maintain coverage. By April 2019,... View Details
Keywords: Medicaid; Health Care Policy; Health; Health Care and Treatment; Policy; Insurance; Health Industry; Arkansas
Sommers, Benjamin D., Lucy Chen, Robert J. Blendon, E. John Orav, and Arnold M. Epstein. "Medicaid Work Requirements in Arkansas: Two-Year Impacts on Coverage, Employment, and Affordability of Care." Health Affairs 39, no. 9 (September 2020).
- 2019
- Article
Time-Driven Activity-Based Cost Analysis for Outpatient Anticoagulation Therapy: Direct Costs in a Primary Care Setting with Optimal Performance
By: Robert S. Kaplan, Rohit A. Bobade, Richard A. Helmers, Thomas M. Jaeger, Laura J. Odell and Derek A. Haas
Objectives: To determine how overall cost of anticoagulation therapy for warfarin compares with that of Novel Oral Anticoagulants (NOACs). Also, to demonstrate a scientific, comprehensive, and an analytical approach to estimate direct costs involved in monitoring and... View Details
Keywords: Time-Driven Activity-Based Costing; Activity Based Costing and Management; Health Care and Treatment; Analysis
Kaplan, Robert S., Rohit A. Bobade, Richard A. Helmers, Thomas M. Jaeger, Laura J. Odell, and Derek A. Haas. "Time-Driven Activity-Based Cost Analysis for Outpatient Anticoagulation Therapy: Direct Costs in a Primary Care Setting with Optimal Performance." Journal of Medical Economics 22, no. 5 (2019): 471–477.
- February 2014
- Teaching Note
Olympus (A)
By: Jay W. Lorsch and Suraj Srinivasan
As 2012 approached the woes of the financial crisis seemed to be fading, companies were resuming business as usual and some of the scrutiny on corporate governance practices began to recede as well. That is until another major financial scandal emerged in Japan in the... View Details
- 2025
- Working Paper
Tax Planning, Illiquidity, and Credit Risks: Evidence from DeFi Lending
By: Lisa De Simone, Peiyi Jin and Daniel Rabetti
This study establishes a plausible causal link between tax-planning-induced illiquidity and credit risks in lending markets. Exploiting an exogenous tax shock imposed by the Internal Revenue Service (IRS) on cryptocurrency gains, along with millions of transactions in... View Details
Keywords: Taxation
De Simone, Lisa, Peiyi Jin, and Daniel Rabetti. "Tax Planning, Illiquidity, and Credit Risks: Evidence from DeFi Lending." Working Paper, February 2025.
- 26 Mar 2014
- Research & Ideas
How Electronic Patient Records Can Slow Doctor Productivity
care providers who demonstrate "meaningful use" of digital records. The legislation came from the belief that EHRs used in certain ways—such as medication order entry that would alert a clinician about drug-to-drug interactions—could... View Details
- November 2005 (Revised December 2006)
- Case
Jeanette Clough at Mount Auburn Hospital
Jeanette Clough, the CEO of Mt. Auburn Hospital, successfully leads a turnaround for the struggling local hospital. When she assumed leadership of Mt. Auburn in 1998, the hospital had recently suffered a $10 million loss. During her first six months, several members of... View Details
Keywords: Organizational Change and Adaptation; Change Management; Leading Change; Expansion; Health Care and Treatment; Business and Community Relations; Health Industry; Cambridge
Roberts, Laura Morgan, and Ayesha Kanji. "Jeanette Clough at Mount Auburn Hospital." Harvard Business School Case 406-068, November 2005. (Revised December 2006.)
- August 2003 (Revised August 2024)
- Case
Fighting the Battle of the Bulge—Evaluating Do Good/Do Well Innovations in Morbid Obesity Treatment
By: Regina E. Herzlinger and John McDonough
Many health care innovations appear successful; but fail. This is the first case in the Innovating Health Care course that investigates how to create successful health care innovations. It is part of the first module in the course. This module focuses on how to... View Details
Keywords: Three Pillars; Industry Analysis; Health Care and Treatment; Innovation and Invention; Innovation and Management; Medical Specialties; Health Industry
Herzlinger, Regina E., and John McDonough. "Fighting the Battle of the Bulge—Evaluating Do Good/Do Well Innovations in Morbid Obesity Treatment." Harvard Business School Case 304-009, August 2003. (Revised August 2024.)
- 09 Jun 2015
- First Look
First Look: June 9, 2015
instance, estimates of U.S. annual losses indicate $1 trillion paid in bribes, $270 billion lost due to unreported income, as well as $42 billion lost in retail due to shoplifting and employee theft. In this article we draw on insights... View Details
Keywords: Sean Silverthorne
- Person Page
Press / Media
By: Gary P. Pisano
Thought Leader: Gary Pisano
by Amy Bernstein, strategy+business, Summer 2007
A leading student of the biotech business describes the problems holding the industry back, and how it can overcome... View Details
- 15 Jan 2019
- First Look
New Research and Ideas, January 15, 2019
forthcoming American Journal of Therapeutics Food and Drug Administration Guidance Documents and New Medical Devices: The Case of Breast Prostheses By: Weitzman, Rachel E., Ariel Dora Stern, and Daniel B. Kramer Abstract—No abstract... View Details
Keywords: Dina Gerdeman
- 01 Oct 2009
- Working Paper Summaries