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  • May 2023
  • Article

Competition in Pricing Algorithms

By: Zach Y. Brown and Alexander J. MacKay
We document new facts about pricing technology using high-frequency data, and we examine the implications for competition. Some online retailers employ technology that allows for more frequent price changes and automated responses to price changes by rivals. Motivated... View Details
Keywords: Pricing Algorithms; Pricing Frequency; Commitment; Online Competition; Price; Information Technology; Competition
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  • 2021
  • Working Paper

Recovering Investor Expectations from Demand for Index Funds

By: Mark Egan, Alexander J. MacKay and Hanbin Yang
We use a revealed-preference approach to estimate investor expectations of stock market returns. Using data on demand for index funds that follow the S&P 500, we develop and estimate a model of investor choice to flexibly recover the time-varying distribution of... View Details
Keywords: Stock Market Expectations; Demand Estimation; Exchange-traded Funds (ETFs); Demand and Consumers; Investment; United States
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  • May 2023
  • Article

Self-Preferencing at Amazon: Evidence from Search Rankings

By: Chiara Farronato, Andrey Fradkin and Alexander MacKay
We study whether Amazon engages in self-preferencing on its marketplace by favoring its own brands (e.g., Amazon Basics) in search. To address this question, we collect new micro-level consumer search data using a custom browser extension installed by a panel of study... View Details
Keywords: Consumer Behavior; E-commerce; Product Positioning; Brands and Branding
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  • Article

Recovering Investor Expectations from Demand for Index Funds

By: Mark Egan, Alexander J. MacKay and Hanbin Yang
We use a revealed-preference approach to estimate investor expectations of stock market returns. Using data on demand for index funds that follow the S&P 500, we develop and estimate a model of investor choice to flexibly recover the time-varying distribution of... View Details
Keywords: Stock Market Expectations; Demand Estimation; Exchange-traded Funds (ETFs); Demand and Consumers; Investment
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  • January 2020
  • Article

The Long-Run Dynamics of Electricity Demand: Evidence from Municipal Aggregation

By: Tatyana Deryugina, Alexander MacKay and Julian Reif
We study the dynamics of residential electricity demand by exploiting a natural experiment that produced large and long-lasting price changes in over 250 Illinois communities. Using a flexible difference-in-differences matching approach, we estimate that the price... View Details
Keywords: Electricity Demand; Consumption Dynamics; Energy; Policy; Demand and Consumers; Price; Mathematical Methods
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  • 29 Jun 2022
  • News

As Prices Skyrocket, Coupons Are Harder to Find Than Ever

  • Working Paper

The Long-Run Dynamics of Electricity Demand: Evidence from Municipal Aggregation

By: Tatyana Deryugina, Alexander MacKay and Julian Reif
Economic theory suggests that demand is more elastic in the long run relative to the short run, but evidence on the empirical relevance of this phenomenon is scarce. We study the dynamics of residential electricity demand by exploiting price variation arising from a... View Details
Keywords: Energy; Demand and Consumers; Price; Policy; Mathematical Methods
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  • 11 Oct 2016
  • First Look

October 11, 2016

behavior; (3) a top-down or laissez-faire style by the leader, which prevents honest conversation about problems; (4) a lack of coordination across businesses, functions, or regions due to poor organizational design; (5) inadequate... View Details
Keywords: Sean Silverthorne
  • May 2014
  • Article

Bias in Reduced-form Estimates of Pass-through

By: Alexander MacKay, Nathan H. Miller, Marc Remer and Gloria Sheu
We show that, in general, consistent estimates of cost pass-through are not obtained from reduced-form regressions of price on cost. We derive a formal approximation for the bias that arises even under standard orthogonality conditions. We provide guidance on the... View Details
Keywords: Pass-through; Reduced-form Aggression; Bias
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  • Web

Blog | Social Enterprise | Harvard Business School

SPNM: Turning Challenges into Opportunity, Learning, and Change Alexander Roque 17 Nov 2022 Alexander Roque is the President and Executive... View Details
  • 01 Dec 2012
  • News

Alumni Book Briefs

military, legal, and humanitarian strategies. Brain Gain: Technology and the Quest for Digital Wisdom by Marc Prensky (MBA 1980) (Palgrave... View Details
Keywords: Broadcasting (except Internet); Information
  • 26 Apr 2011
  • News

BioMine Strikes Gold

Entrepreneurship Fellowship, and Student Business Plan Contest have been announced. Representing the HBS Association of Northern California and the HBS Tech Alumni Club, BioMine, led View Details
Keywords: Mining (except Oil and Gas); Mining (except Oil and Gas); Mining (except Oil and Gas); Mining (except Oil and Gas)
  • 12 Apr 2011
  • News

Twelve Global Finalists Compete at HBS

Twelve Global Finalists Compete at HBS Selected from more than 90 worldwide entries, 12 winning regional teams will travel back to campus on April 25 to compete in the the 2nd annual Alumni New Venture Contest finals. The contest, hosted View Details
Keywords: Multiple alumni