Publications

2021
Working Paper

Going by the Book: Valuation Ratios and Stock Returns

By: Ki-Soon Choi, Eric So and Charles C.Y. Wang

We study the use of firms’ book-to-market ratios (B/M) in value investing and its implications for comovements in firms’ stock returns and trading volumes. We show B/M has become increasingly detached from common alternative valuation ratios over time while also... View Details

Keywords: Valuation Ratios; Book-to-market Ratios; Investment Return; Investment; Decision Making

SSRN

Read Now

October 2000 (Revised April 2001)
Case

Cost of Capital at Ameritrade

By: Mark L. Mitchell and Erik Stafford

Ameritrade Holding Corp. is planning large marketing and technology investments to improve the company's competitive position in deep-discount brokerage by taking advantage of emerging economies of scale. In order to evaluate whether the strategy would generate... View Details

Keywords: Developing Countries and Economies; Asset Pricing; Cash Flow; Cost of Capital; Investment; Marketing; Mathematical Methods; Competition; Information Technology; Internet and the Web; Financial Services Industry

William Kerr is the D’Arbeloff Professor of Business Administration at Harvard Business School. Bill is Senior Associate Dean for Faculty Development and Research, co-director of Harvard’s Managing the Future of Work initiative, and faculty chair of the... View Details

Keywords: communications; computer; consulting; high technology; information technology industry; management consulting; manufacturing; telecommunications; venture capital industry

09 Jun 2010
Working Paper Summaries

Agency Costs, Mispricing, and Ownership Structure

Keywords: by Sergey Chernenko, C. Fritz Foley & Robin Greenwood

September 2011 (Revised January 2012)
Case

Gerson Lehrman Group: Managing Risks

By: Boris Groysberg, Paul Healy and Sarah L. Abbott

It was June 2011 and Alexander Saint-Amand, President and CEO of Gerson Lehrman Group, the largest expert network firm globally, has found his firm once again in the midst of controversy. This controversy centered around a number of insider trading cases that had been... View Details

Keywords: Risk Management

Research Summary

Financial Regulation and the Japanese Banking Crisis of the 1990s

As part of a long-term research interest in financial regulation and the role of the Ministry of Finance, Ulrike Schaede has studied various segments of Japan's financial markets to understand better the interaction between regulators and regulatees. This includes... View Details

15 Aug 2014
News

Getting a handle on inversion

2024
Working Paper

Climate Solutions, Transition Risk, and Stock Returns

By: Shirley Lu, Edward J. Riedl, Simon Xu and George Serafeim

Using large language models to measure firms' climate solution products and services, we find that high-climate solution firms exhibit lower stock returns and higher market valuation multiples. Their stock prices respond positively to events signaling increased demand... View Details

Keywords: Technology; Generative Ai; Large Language Models; Climate Finance; Climate Change; Innovation and Invention; Environmental Sustainability; AI and Machine Learning; Investment; Financial Markets

SSRN

Read Now

September 2004 (Revised December 2004)
Case

Bank Leu's Prima Cat Bond Fund

In 2001, Bank Leu, a Swiss private bank, is considering creating the world's first public fund for catastrophe bonds. Cat bonds are securities whose payments depend on the probability of a catastrophe occurring, such as an earthquake or hurricane. Cat bonds are... View Details

Keywords: Risk Management; Bonds; Natural Disasters; Insurance; Capital Markets; Banks and Banking; Banking Industry; Insurance Industry; Switzerland

23 Aug 2016
First Look

August 23, 2016

examine if it can be implemented in different contexts and across academic cultures, structures, and traditions. Publisher's link: https://www.hbs.edu/faculty/Pages/item.aspx?num=51496 Spring 2016 Journal of Applied Corporate Finance ESG Integration in View Details

Keywords: Sean Silverthorne

November 2023 (Revised April 2024)
Case

BiomX: Bringing Phage Back to the Stage

By: Paul A. Gompers, Elie Ofek, Orna Dan and Emilie Billaud

In the spring of 2023, and following the favorable results of a trial involving its phage cocktail for treating lung infections among cystic fibrosis (CF) patients, the leadership of BiomX had several critical issues to wrestle with. First, given its precarious... View Details

Keywords: Working Capital; Financing and Loans; Health Testing and Trials; Product Development; Research and Development; Science-Based Business; Commercialization; Biotechnology Industry; Pharmaceutical Industry

22 Aug 2007
Research & Ideas

The Hedge Fund as Activist

Managers of public corporations sometimes need to be reminded that they work for shareholders. Without proper monitoring, managers may receive excess compensation or perks, or misuse free cash flow. Historically, poorly performing... View Details

Keywords: by Robin Greenwood; Financial Services

20 Jun 2017
First Look

First Look at New Research and Ideas, June 20

Psychological Science Should Governments Invest More in Nudging? By: Benartzi, Shlomo, John Beshears, Katherine L. Milkman, Cass R. Sunstein, Richard H. Thaler, Maya Shankar, Will Tucker-Ray, William J. Congdon, and Steven Galing... View Details

Keywords: Sean Silverthorne

March 2024
Case

Ava DuVernay's Array: Disrupting the Hollywood Film Industry

By: Anita Elberse and Morgan Brewton-Johnson

In February 2023 acclaimed filmmaker Ava DuVernay is filming her latest movie, Origin, a daring adaptation of Isabel Wilkerson’s book Caste: The Origins of Our Discontents. With Origin, DuVernay is pioneering a method to finance the endeavor—through a combination of... View Details

Keywords: Financing and Loans; Intellectual Property; Philanthropy and Charitable Giving; Disruption; Motion Pictures and Video Industry

August 1996
Case

ThermoLase

By: William A. Sahlman and Andrew S. Janower

John Hansen, CEO of ThermoLase, must develop a plan of action to exploit the company's new development-stage revolutionary hair removal technology with negligible revenues and a $500 million market capitalization. This nascent public Thermo Electron spin out company... View Details

Keywords: Business or Company Management; Corporate Entrepreneurship; Venture Capital; Business Strategy; Growth and Development Strategy; Business Plan; Beauty and Cosmetics Industry

10 Nov 2014
Working Paper Summaries

Crony Capitalism, American Style: What Are We Talking About Here?

Keywords: by Malcolm S. Salter

24 Feb 2021
Blog Post

My HBS Student Loan Story: Les Williams (MBA 2005)

Business school is a valuable investment in your future. HBS supports that investment through generous need-based scholarships. In addition to scholarships, many HBS students utilize student loans to help... View Details

Teaching Interest

Finance II (MBA Required Curriculum)

By: Benjamin C. Esty

This course builds on the foundation developed in Finance I, focusing on three sets of managerial decisions:

How to evaluate complex investments.
How to set and execute financial policies within a firm.
How to integrate... View Details

Keywords: Finance

September 1995 (Revised March 1997)
Case

Bob Reiss and Valdawn (A): November 1994

Bob Reiss, a seasoned entrepreneur, "accidentally" started Valdawn in 1988 and in six years built the company into a $7 million marketer of "fun and fashion" watches. Valdawn, a "virtual" company, has very few employees or fixed assets and enjoys attractive profit... View Details

Keywords: Business or Company Management; Business Growth and Maturation; Ethics; Decision Making; Entrepreneurship; Apparel and Accessories Industry