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- 2023
- Working Paper
An Experimental Design for Anytime-Valid Causal Inference on Multi-Armed Bandits
By: Biyonka Liang and Iavor I. Bojinov
Typically, multi-armed bandit (MAB) experiments are analyzed at the end of the study and thus require the analyst to specify a fixed sample size in advance. However, in many online learning applications, it is advantageous to continuously produce inference on the...
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Liang, Biyonka, and Iavor I. Bojinov. "An Experimental Design for Anytime-Valid Causal Inference on Multi-Armed Bandits." Harvard Business School Working Paper, No. 24-057, March 2024.
- 2022
- Working Paper
Retail Investors’ Contrarian Behavior Around News, Attention, and the Momentum Effect
By: Cheng (Patrick) Luo, Enrichetta Ravina, Marco Sammon and Luis M. Viceira
Using a large panel of U.S. brokerage accounts trades and positions, we show that a large fraction of retail investors trade as contrarians after large earnings surprises, especially for loser stocks, and that such contrarian trading contributes to post earnings...
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Keywords:
Retail Investors;
Post Earnings Announcement Drift;
Price Momentum;
Behavioral Finance;
Investment;
Demographics
Luo, Cheng (Patrick), Enrichetta Ravina, Marco Sammon, and Luis M. Viceira. "Retail Investors’ Contrarian Behavior Around News, Attention, and the Momentum Effect." Working Paper, June 2022.
- July 2021
- Article
Material Sustainability Information and Stock Price Informativeness
By: Jody Grewal, Clarissa Hauptmann and George Serafeim
As part of the SEC’s revision of Regulation S-K, many investors proposed the mandatory disclosure of sustainability information in the form of environmental, social, and governance (ESG) data. However, progress is contingent on collecting evidence regarding which...
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Keywords:
Voluntary Disclosure;
Accounting Standards;
Sustainability;
Nonfinancial Information;
Corporate Social Responsibility;
Stock Price Informativeness;
Synchronicity;
Environmental Sustainability;
Corporate Disclosure;
Corporate Accountability;
Stocks;
Price;
Corporate Social Responsibility and Impact;
Accounting;
Standards
Grewal, Jody, Clarissa Hauptmann, and George Serafeim. "Material Sustainability Information and Stock Price Informativeness." Journal of Business Ethics 171, no. 3 (July 2021): 513–544.
- March 2014
- Article
Do Analysts Follow Managers Who Switch Companies? An Analysis of Relationships in the Capital Markets
By: Francois Brochet, Gregory S. Miller and Suraj Srinivasan
We examine the importance of professional relationships developed between analysts and managers by investigating analyst coverage decisions in the context of CEO and CFO moves between publicly listed firms. We find that top executive moves from an origin firm to a...
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Keywords:
Management Turnover;
Analyst Coverage;
Capital Market Relationships;
Capital Markets;
Relationships
Brochet, Francois, Gregory S. Miller, and Suraj Srinivasan. "Do Analysts Follow Managers Who Switch Companies? An Analysis of Relationships in the Capital Markets." Accounting Review 89, no. 2 (March 2014).
- October 2010 (Revised July 2012)
- Supplement
Robin Bienenstock at Sanford C. Bernstein
By: Linda A. Hill and Dana Teppert
Robin Bienenstock, a senior sell-side equity research analyst at Sanford C. Bernstein, considers how to build her research franchise given the changing nature of the industry and the firm. A collaborative research paper called "Computer in Your Pocket" was recently...
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Keywords:
Employees;
Knowledge Dissemination;
Knowledge Sharing;
Leadership;
Groups and Teams;
Research;
Cooperation;
Financial Services Industry
Hill, Linda A., and Dana Teppert. "Robin Bienenstock at Sanford C. Bernstein." Harvard Business School Supplement 411-053, October 2010. (Revised July 2012.)
- 2009
- Working Paper
Do Analysts Follow Managers Who Switch Companies? An Analysis of Relationships in the Capital Markets.
By: Francois Brochet, Gregory S. Miller and Suraj Srinivasan
We examine the importance of professional relationships developed between analysts and managers by investigating analyst coverage decisions in the context of CEO and CFO moves between publicly listed firms. We find that top executive moves from an origin firm to a...
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Keywords:
Business and Stakeholder Relations;
Capital Markets;
Decisions;
Managerial Roles;
Financial Institutions;
Investment;
Market Participation;
Public Ownership;
Relationships
Brochet, Francois, Gregory S. Miller, and Suraj Srinivasan. "Do Analysts Follow Managers Who Switch Companies? An Analysis of Relationships in the Capital Markets." American Accounting Association Financial Accounting and Reporting Section Paper, August 2009. (Forthcoming, The Accounting Review, March 2014.)
- November 2007
- Article
Standing Out from the Crowd: The Visibility-Enhancing Effects of IPO-related Signals on Alliance Formation by Entrepreneurial Firms
By: Tim Pollock and Ranjay Gulati
In this study, we explore how multiple signals related to entrepreneurial companies at the time of their initial public offering (IPO) influence the firms' ability to acquire non-financial resources over time. Specifically, the study looks at how signals based on...
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Keywords:
Entrepreneurship;
Venture Capital;
Initial Public Offering;
Investment;
Alliances;
Risk and Uncertainty;
Power and Influence
Pollock, Tim, and Ranjay Gulati. "Standing Out from the Crowd: The Visibility-Enhancing Effects of IPO-related Signals on Alliance Formation by Entrepreneurial Firms." Strategic Organization 5, no. 4 (November 2007). (A shorter version of this paper appeared in Academy of Management Best Papers Proceedings, pp. 11-16, 2002.)