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    Time Series Experiments and Causal Estimands: Exact Randomization Tests and Trading

    We define causal estimands for experiments on single time series, extending the potential outcome framework to dealing with temporal data. Our approach allows the estimation of a broad class of these estimands and exact... View Details
    • Article

    Stop the Meeting Madness: How to Free Up Time for Meaningful Work

    By: Leslie Perlow, Constance Noonan Hadley and Eunice Eun
    Many executives feel overwhelmed by meetings, and no wonder: On average, they spend nearly 23 hours a week in them, up from less than 10 hours in the 1960s. What’s more, the meetings are often poorly timed, badly run, or both. We can all joke about how painful they... View Details
    Keywords: Time Management; Performance Efficiency; Organizational Change and Adaptation; Performance Improvement
    Related
    • 18 Jul 2005
    • Research & Ideas

    Time to Rethink the Corporate Tax System?

    review in deciding whether you deserve a mortgage would not overstate your earnings, given your desire to minimize taxes. Similarly, tax authorities can rely on the use of tax forms for other purposes to limit the degree of income... View Details
    Keywords: by Ann Cullen
    • 30 Mar 2018
    • News

    Alibaba founders bet on US subscription clothing pioneer

    • 21 Aug 2019
    • Research & Ideas

    What Machine Learning Teaches Us about CEO Leadership Style

    CEOs are communicators. Studies show that CEOs spend 85 percent of their time in communication-related activities, including speeches, meetings, and phone calls with people both inside and outside the firm. Now, new research View Details
    Keywords: by Michael Blanding
    • 15 Mar 2021
    • Blog Post

    REFLECTIONS ON MY TIME AS BEI DIRECTOR

    region. We discovered that alumni are eager to share their expertise and learn from one another. Building on that success, BEI partnered with Alumni Relations to organize a conference in March 2020 on Risks, Opportunities, and Investment in the Era of Climate Change.... View Details
    • 09 Jan 2016
    • News

    Valuing your time over money may be linked to happiness

    • 10 Jan 2023
    • Op-Ed

    Time to Move On? Career Advice for Entrepreneurs Preparing for the Next Stage

    Over the past year, I have watched several firms going through periods of transition. Some have been cofounders who realized that it was time for a more experienced leader to take their business to the next level. Some were just ready for... View Details
    Keywords: by Julia Austin
    • 01 Mar 2022
    • What Do You Think?

    Is It Time for More Reverse Mentoring?

    generational difference in the amount of time we spend staring at little screens, exchanging both essential and inane information, and transacting business at a never-before achievable clip. The Gen Z’ers who have lived their entire lives... View Details
    Keywords: by James Heskett
    • 2019
    • Article

    Time Series Experiments and Causal Estimands: Exact Randomization Tests and Trading

    By: Iavor I Bojinov and Neil Shephard
    We define causal estimands for experiments on single time series, extending the potential outcome framework to dealing with temporal data. Our approach allows the estimation of a broad class of these estimands and exact randomization based p-values for testing causal... View Details
    Keywords: Causality; Nonparametric; Potential Outcomes; Trading Costs; Mathematical Methods
    Related
    • 20 Aug 2007
    • Research & Ideas

    HBS Cases: Using Investor Relations Proactively

    upgrades. This partly explains, I believe, why they have been among the first European companies to build strong IR departments. Now they can use IR to explain their business to stockholders as well as communicate to their many other... View Details
    Keywords: by Martha Lagace; Energy; Utilities
    • 26 Jan 2019
    • Working Paper Summaries

    Marketplace Scalability and Strategic Use of Platform Investment

    Keywords: by Jin Li, Gary P. Pisano, and Feng Zhu
    • 06 Feb 2023
    • HBS Seminar

    Using Oral History in Business and Management Studies

    • 27 Jun 2017
    • News

    What corporate bankruptcy can teach us about morality

    • 21 Aug 2017
    • News

    The Principles That Divide Us Might Be Greater Than Those That Bind Us Together

    “It seems to me that we are now economically and socially divided and burdened in ways that are broadly analogous to 1937. During such times, conflicts (both internal and external) increase, populism emerges, democracies are threatened and wars can occur. I can't say... View Details
    Keywords: Executive, Legislative, and Other General Government Support; Government
    • 2012
    • Article

    Mutual Fund Trading Pressure: Firm-Level Stock Price Impact and Timing of SEOs

    By: Mozaffar N. Khan, Leonid Kogan and George Serafeim
    In tests of the equity market timing theory of external finance, the prior literature has used overvaluation identifiers such as high market-to-book and high prior returns that are likely correlated with other determinants of SEOs. We use price pressure resulting from... View Details
    Keywords: Equity; Market Transactions; Valuation; Capital Structure; Market Timing; Mathematical Methods; Acquisition
    Related
    • 01 Mar 2005
    • News

    Changing Lives One Computer at a Time

    otherwise have access them. Working through Dell's TechKnow initiative, HBSAAA volunteers in the New York metropolitan area are helping to teach middle-school students how to take apart, reassemble, and use refurbished Dell computers,... View Details
    Keywords: Margie Kelley; Religious, Grantmaking, Civic, Professional, and Similar Organizations; Personal Services
    • 13 May 2019
    • News

    Making History More Relevant, One Case At A Time

    • October 2008
    • Article

    It's Time to Make Management a True Profession

    By: Nitin Nohria and Rakesh Khurana
    In the face of the recent institutional breakdown of trust in business, managers are losing legitimacy. To regain public trust, management needs to become a true profession in much the way medicine and law have, argue Khurana and Nohria of Harvard Business School. True... View Details
    Keywords: Competency and Skills; Education; Ethics; Corporate Accountability; Management; Trust; Value Creation
    Related
    • 10 Nov 2015
    • Blog Post

    Using an MBA for a Career Change

    I applied to MBA programs because I wanted to change careers.  I went from spending six years at one company to trying out a number of industries and function areas in two years.  During that time I learned two important things: 1. Maybe... View Details