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Show Results For
- All HBS Web
(2,839)
- People (2)
- News (581)
- Research (1,951)
- Events (9)
- Multimedia (27)
- Faculty Publications (1,248)
- 09 May 2019
- News
Why You Should Root for the Uber I.P.O. to Fail
- January 2015
- Article
X-CAPM: An Extrapolative Capital Asset Pricing Model
By: Nicholas Barberis, Robin Greenwood, Lawrence Jin and Andrei Shleifer
Survey evidence suggests that many investors form beliefs about future stock market returns by extrapolating past returns. Such beliefs are hard to reconcile with existing models of the aggregate stock market. We study a consumption-based asset pricing model in which... View Details
Barberis, Nicholas, Robin Greenwood, Lawrence Jin, and Andrei Shleifer. "X-CAPM: An Extrapolative Capital Asset Pricing Model." Journal of Financial Economics 115, no. 1 (January 2015): 1–24.
- October 1983 (Revised July 1984)
- Case
Information Resources, Inc. (B)
The company's plans are revealed. A stock offering has produced $20 million to be used for development. View Details
Keywords: Initial Public Offering
Clarke, Darral G. "Information Resources, Inc. (B)." Harvard Business School Case 584-044, October 1983. (Revised July 1984.)
- September 2023 (Revised January 2024)
- Case
Icahn Enterprises: Ponzi Scheme or Sound Investment
By: Aiyesha Dey, Jonas Heese and James Weber
Icahn Enterprises, a publicly traded limited partnership founded and operated by famed activist investor Carl Icahn, had earned above market returns for over a decade. Between 2018 and early 2023, it had a compound annual return of 31%. Icahn invested in undervalued... View Details
Dey, Aiyesha, Jonas Heese, and James Weber. "Icahn Enterprises: Ponzi Scheme or Sound Investment." Harvard Business School Case 124-013, September 2023. (Revised January 2024.)
- 23 Aug 2004
- Research & Ideas
New Challenges for Long-Term Investors
choice is a complex issue, and that some conventional wisdom isn't always wise. For example, there are perfectly good reasons why a conservative long-term investor would hold more stocks and bonds than cash instruments such as... View Details
Keywords: by Ann Cullen
- April 2012
- Article
Share Issuance and Factor Timing
By: Robin Greenwood and Samuel G. Hanson
We show that characteristics of stock issuers can be used to forecast important common factors in stocks' returns such as those associated with book-to-market, size, and industry. Specifically, we use differences between the attributes of stock issuers and repurchasers... View Details
Keywords: Investment Portfolio; Stock Shares; Forecasting and Prediction; Investment Return; Policy; Profit
Greenwood, Robin, and Samuel G. Hanson. "Share Issuance and Factor Timing." Journal of Finance 67, no. 2 (April 2012): 761–798. (Internet Appendix Here.)
- September 2009 (Revised June 2011)
- Supplement
Citigroup's Exchange Offer (C)
By: Robin Greenwood and James Quinn
Citigroup faced considerable distress in early 2009. In late 2008, the bank had accepted $45 billion in preferred equity from the United States government via the Troubled Assets Relief Program (TARP). Yet, the stock had continued to slide in early 2009. In late... View Details
Greenwood, Robin, and James Quinn. "Citigroup's Exchange Offer (C)." Harvard Business School Supplement 210-015, September 2009. (Revised June 2011.)
- October 2008 (Revised September 2011)
- Supplement
PepsiCo's Bid for Quaker Oats (D)
Describes the final deal struck between PepsiCo and Quaker Oats, including the terms of collared consideration. Summarizes stock price announcement effects. View Details
Keywords: Mergers and Acquisitions; Announcements; Stocks; Price; Risk Management; Negotiation Deal; Valuation; Food and Beverage Industry
Baldwin, Carliss Y. "PepsiCo's Bid for Quaker Oats (D)." Harvard Business School Supplement 209-071, October 2008. (Revised September 2011.)
- October 1992 (Revised May 2004)
- Background Note
Introduction to Owners' Equity
By: William J. Bruns Jr.
An introduction to accounting for owners' equity and leveraged buyouts. Covers classes of shareholders, treasury stock, stock distributions, and dividend accounting. View Details
Bruns, William J., Jr. "Introduction to Owners' Equity." Harvard Business School Background Note 193-049, October 1992. (Revised May 2004.)
- 19 Feb 2007
- Research & Ideas
Inexperienced Investors and Market Bubbles
joining a bubble. In the recent paper, "Inexperienced Investors and Bubbles," Harvard Business School's Robin Greenwood and Stanford's Stefan Nagel compared the returns of young and older mutual fund managers during and after the technology View Details
- 21 Feb 2018
- News
Here Come The Copyright Bots For Hire, With Lawyers In Tow
- April 2004 (Revised September 2004)
- Case
Hewlett-Packard-Compaq: The Merger Decision
By: Krishna G. Palepu and Jonathan Barnett
Hewlett-Packard's proposed $24 billion acquisition of rival Compaq marked the largest merger in the history of the computer industry. The merger was Hewlett-Packard's response to sweeping changes impacting the technology industry. The severity of the stock market's... View Details
Keywords: Cost vs Benefits; Mergers and Acquisitions; Business and Shareholder Relations; Computer Industry; Technology Industry
Palepu, Krishna G., and Jonathan Barnett. "Hewlett-Packard-Compaq: The Merger Decision." Harvard Business School Case 104-048, April 2004. (Revised September 2004.)
- June 2014 (Revised October 2015)
- Case
Molycorp: Financing the Production of Rare Earth Minerals (A)
By: Benjamin C. Esty and E. Scott Mayfield
Molycorp, the western hemisphere's only producer of rare earth minerals, was in the middle of a $1 billion capital expenditure project in its effort to become a vertically integrated supplier of rare earth minerals, oxides, and metals. Yet it had just reported lower... View Details
Keywords: Convertible Debt; Uncertainty; Competition; Startup; China; Supply & Demand; Growth; Rare Earth Minerals; Discounted Cash Flows; Mining; Payoff Diagrams; Option Pricing; Capital Budgeting; Capital Structure; Cash Flow; Financial Strategy; Market Entry and Exit; Vertical Integration; Valuation; Metals and Minerals; Mining Industry; Industrial Products Industry; Canada; California
Esty, Benjamin C., and E. Scott Mayfield. "Molycorp: Financing the Production of Rare Earth Minerals (A)." Harvard Business School Case 214-054, June 2014. (Revised October 2015.)
- 13 Jan 2003
- News
The Tax Cut That Could Pay Dividends
- August 2020
- Article
Financial Market Risk Perceptions and the Macroeconomy
By: Carolin E. Pflueger, Emil Siriwardane and Adi Sunderam
We propose a novel measure of risk perceptions: the price of volatile stocks (PVS), defined as the book-to-market ratio of low-volatility stocks minus the book-to-market ratio of high-volatility stocks. PVS is high when perceived risk directly measured from surveys and... View Details
Keywords: Risk-centric Business Cycles; Cross-section Of Equities; Real Risk-free Rate; Real Investment; Financial Markets; Risk and Uncertainty; Perception; Investment
Pflueger, Carolin E., Emil Siriwardane, and Adi Sunderam. "Financial Market Risk Perceptions and the Macroeconomy." Quarterly Journal of Economics 135, no. 3 (August 2020).
- 19 May 2003
- Research & Ideas
Expensing Options Won’t Hurt High Tech
(One cure for stock option abuse, say proponents, is to change accounting rules so that option grants are reflected in a company's principal financial statements. High-tech start-ups blister at that idea, saying it would harm their... View Details
- 06 Jan 2003
- Research & Ideas
Why Expensing Options Doesn’t Solve the Problem
It is fascinating to observe pundit after pundit come down strongly on the side of expensing stock options in the reported financial statements, as if that were the silver bullet for combating corporate malfeasance and resolving all our... View Details
Keywords: by William Sahlman
- 08 Sep 2003
- Research & Ideas
A Bold Proposal for Investment Reform
recent Harvard Business Review article, "How the Quest for Efficiency Corroded the Market," proposes a number of radical remedies including tax breaks for long-term investors, the establishment of an investor's union, and making View Details
- 18 Oct 2004
- Research & Ideas
The Bias of Wall Street Analysts
If it's one lesson the individual investor learned the hard way from the collapse of Enron, it is that the recommendations of Wall Street stock analysts can be influenced by much more than purely objective research. Just look at the large... View Details
- April 2025
- Article
The Disappearing Index Effect
By: Robin Greenwood and Marco Sammon
The abnormal return associated with a stock being added to the S&P 500 has fallen from an average
of 7.4% in the 1990s to 0.3% over the past decade. This has occurred despite a significant increase in the
share of stock market assets linked to the index. A similar... View Details
Greenwood, Robin, and Marco Sammon. "The Disappearing Index Effect." Journal of Finance 80, no. 2 (April 2025): 657–698.