Publications

Publications

Filter Results : (152) Arrow Down

Show Results For

Heterogeneity Remove Heterogeneity →

Page 1 of 152 Results →

Are you looking for?

→ Search All HBS Web
  • 2022
  • Working Paper

The Retail Habitat
By: Toomas Laarits and Marco Sammon
Retail investors trade hard-to-value stocks. Controlling for size, stocks with a high share of retail-initiated trades are composed of more intangible capital, have longer duration cash-flows and a higher likelihood of being mispriced. Consistent with retail-heavy...  View Details
Keywords: Retail; Retail Trade; Intangible Capital; Mispricing; Investment; Valuation; Business Earnings
Related
  • 2022
  • Working Paper

When Less Is More: Using Short-term Signals to Overcome Systematic Bias in Long-run Targeting
By: Ta-Wei Huang and Eva Ascarza
Firms are increasingly interested in developing targeted interventions for customers with the best response. Doing so requires firms to identify differences in customer sensitivity, which they often obtain using uplift modeling (i.e., heterogeneous treatment effect...  View Details
Keywords: Long-run Targeting; Heterogeneous Treatment Effect; Statistical Surrogacy; Customer Churn; Field Experiments; Consumer Behavior; Customer Focus and Relationships; AI and Machine Learning; Marketing
Related
  • 2022
  • Working Paper

You've Got Mail! The Late 19th Century U.S. Postal Service Expansion, Entrepreneurship, and Firm Performance
By: Astrid Marinoni and Maria P. Roche
We analyze the impact of the US Postal Service's western expansion in the late 19th century, a major institutional innovation, on entrepreneurship and its heterogeneous influence on firm performance. Exploiting a novel dataset constructed from digitized archival...  View Details
Keywords: Entrepreneurship; Institutional Innovation; Knowledge Exchange; US Postal Service; Firm Performance; Infrastructure; Expansion; Government Administration; Communication; Business History; Public Administration Industry; California
Related
  • 2022
  • Working Paper

Perceptions about Monetary Policy
By: Michael D. Bauer, Carolin Pflueger and Adi Sunderam
We estimate perceptions about the Fed's monetary policy rule from micro data on professional forecasters. The perceived rule varies significantly over time, with important consequences for monetary policy and bond markets. Over the monetary policy cycle, easings are...  View Details
Keywords: Monetary Policy; Central Banking; Forecasting and Prediction; Policy; Interest Rates
Related
  • 2022
  • Working Paper

What Do Impact Investors Do Differently?
By: Shawn A. Cole, Leslie Jeng, Josh Lerner, Natalia Rigol and Benjamin N. Roth
In recent years, impact investors – private investors who seek to generate simultaneously attractive financial and social returns – have attracted intense interest and controversy. We analyze a novel, comprehensive data set of impact and traditional investors to assess...  View Details
Keywords: ESG; Socially Responsible Investing; Investment Decisions; Public Goods; Impact Investment; Investment; Private Equity; Venture Capital
Related
  • 2022
  • Working Paper

Can Finance Save the World? Measurement and Effects of Coal Divestment Policies by Banks
By: Daniel Green and Boris Vallée
We study whether divestment policies are an effective tool to address climate change, using coal lending bans by banks around the world as a laboratory. In contrast to theories arguing divestment is ineffective because capital is highly subsitutable, we find large...  View Details
Keywords: Coal Power; Climate Change; Investment; Environmental Sustainability; Policy; Financing and Loans; Energy Industry; Banking Industry
Related
  • Article

The Cross Section of Bank Value
By: Mark Egan, Stefan Lewellen and Adi Sunderam
We study the determinants of value creation in U.S. commercial banks. We develop novel measures of individual banks' productivities at collecting deposits and making loans. We relate these measures to bank market values and find that deposit productivity is responsible...  View Details
Keywords: Productivity; Banks and Banking; Valuation; Performance Productivity; Value Creation; United States
Related
  • 2022
  • Working Paper

A Linear Panel Model with Heterogeneous Coefficients and Variation in Exposure
By: Jesse M. Shapiro and Liyang Sun
Linear panel models featuring unit and time fixed effects appear in many areas of empirical economics. An active literature studies the interpretation of the ordinary least squares estimator of the model, commonly called the two-way fixed effects (TWFE) estimator, in...  View Details
Keywords: Econometric Models; Mathematical Methods
Related
  • Article

Eliminating Unintended Bias in Personalized Policies Using Bias-Eliminating Adapted Trees (BEAT)
By: Eva Ascarza and Ayelet Israeli

An inherent risk of algorithmic personalization is disproportionate targeting of individuals from certain groups (or demographic characteristics such as gender or race), even when the decision maker does not intend to discriminate based on those “protected”...  View Details

Keywords: Algorithm Bias; Personalization; Targeting; Generalized Random Forests (GRF); Discrimination; Customization and Personalization; Decision Making; Fairness; Mathematical Methods
Related
  • Article

From Immigrants to Americans: Race and Assimilation During the Great Migration
By: Vasiliki Fouka, Soumyajit Mazumder and Marco Tabellini
How does the arrival of a new minority group affect the social acceptance and outcomes of existing minorities? We study this question in the context of the First Great Migration. Between 1915 and 1930, 1.5 million African Americans moved from the U.S. South to Northern...  View Details
Keywords: Assimilation; Great Migration; Group Identity; Immigration; Race; History; United States
Related
  • March 2022
  • Article

Learning to Rank an Assortment of Products
By: Kris Ferreira, Sunanda Parthasarathy and Shreyas Sekar
We consider the product ranking challenge that online retailers face when their customers typically behave as “window shoppers”: they form an impression of the assortment after browsing products ranked in the initial positions and then decide whether to continue...  View Details
Keywords: Online Learning; Product Ranking; Assortment Optimization; Learning; Internet and the Web; Product Marketing; Consumer Behavior; E-commerce
Related
  • 2022
  • Chapter

Creating 'Smart' Policy to Promote Entrepreneurship and Innovation
By: Karen G. Mills and Annie Dang
Entrepreneurship is a key to unlocking innovation and fostering regional and national economic productivity. Extensive studies demonstrate that small and young firms contribute to innovation and employment growth. But which of the many types of small firms are...  View Details
Keywords: Economic Policy; High-growth; Entrepreneurship; Innovation and Invention; Business Startups; Economic Growth; Policy; United States
Related
  • 2022
  • Book

The Role of Innovation and Entrepreneurship in Economic Growth
By: Michael J. Andrews, Aaron Chatterji, Josh Lerner and Scott Stern
We live in an era in which innovation and entrepreneurship seem ubiquitous, particularly in regions like Silicon Valley, Boston, and the Research Triangle Park. But many metrics of economic growth, such as productivity growth and business dynamism, have been at best...  View Details
Keywords: Productivity Growth; Production Technologies; Innovation and Invention; Entrepreneurship; Economic Growth; Competition; Organizational Design; Economic Slowdown and Stagnation
Related
  • 2022
  • Working Paper

Heterogeneous Investors and Stock Market Fluctuations
By: Odhrain McCarthy and Sebastian Hillenbrand
We introduce a heterogeneous agent model which features extrapolative beliefs and time-varying risk aversion. The model leads to an empirical framework which we estimate with stock prices, survey data and risk aversion measures. We find that extrapolative beliefs and...  View Details
Keywords: Stock Market; Investment Decisions; Asset Pricing; Investment; Behavioral Finance; Stocks
Related
  • Article

A Prescriptive Analytics Framework for Optimal Policy Deployment Using Heterogeneous Treatment Effects
By: Edward McFowland III, Sandeep Gangarapu, Ravi Bapna and Tianshu Sun
We define a prescriptive analytics framework that addresses the needs of a constrained decision-maker facing, ex ante, unknown costs and benefits of multiple policy levers. The framework is general in nature and can be deployed in any utility maximizing context, public...  View Details
Keywords: Prescriptive Analytics; Heterogeneous Treatment Effects; Optimization; Observed Rank Utility Condition (OUR); Between-treatment Heterogeneity; Machine Learning; Decision Making; Analysis; Mathematical Methods
Related
  • 2021
  • Working Paper

What Drives Variation in Investor Portfolios? Evidence from Retirement Plans
By: Mark Egan, Alexander MacKay and Hanbin Yang
We study empirical patterns in investment behavior using a comprehensive data set of defined contribution plans. Using plan-level portfolio allocation data for the near universe of 401(k) plans over the period 2009–2019, we document substantial differences in...  View Details
Keywords: Stock Market Expectations; Demand Estimation; Retirement Planning; Defined Contribution Retirement Plan; 401 (K); Finance; Investment Portfolio; Investment; Retirement; Behavioral Finance; Financial Services Industry; United States
Related
  • November 2021
  • Article

Ratings, Reviews, and the Marketing of New Products
By: Itay P. Fainmesser, Dominique Olié Lauga and Elie Ofek
We study how user-generated content (UGC) about new products impacts a firm's advertising and pricing decisions and the effect on profits and market dynamics. We construct a two-period model where consumers value quality and are heterogeneous in their taste for the new...  View Details
Keywords: Online Reviews; Product Ratings; Social Networks; Word Of Mouth; Pricing; User-generated Content; Advertising; Product Marketing; Price; Consumer Behavior; Product Positioning; Social Media
Related
  • October 2021
  • Article

Overcoming the Cold Start Problem of CRM Using a Probabilistic Machine Learning Approach
By: Nicolas Padilla and Eva Ascarza
The success of Customer Relationship Management (CRM) programs ultimately depends on the firm's ability to understand consumers' preferences and precisely capture how these preferences may differ across customers. Only by understanding customer heterogeneity, firms can...  View Details
Keywords: Customer Management; Targeting; Deep Exponential Families; Probabilistic Machine Learning; Cold Start Problem; Customer Relationship Management; Programs; Consumer Behavior; Analysis
Related
  • 2021
  • Working Paper

Accounting for Employment Impact at Scale
By: Adel Fadhel, Katie Panella, Ethan Rouen and George Serafeim
Using new data on workforce composition and wages, we systematically measure the employment impact at U.S. firms from 2008 to 2020, including 2,682 unique firms and 22,322 firm-year observations. We document significant variation across industries and firms within each...  View Details
Keywords: Impact Accounting; ESG; Employee Turnover; Wages; Employment; Measurement and Metrics; Human Capital; Diversity; United States
Related
  • Article

Targeting Weather Insurance Markets
By: Anita Mukherjee, Shawn Cole and Jeremy Tobacman
The suitability of insurance products often depends greatly on individual circumstances. This paper examines the challenges of heterogeneity in a relatively new product, weather‐indexed insurance. This index insurance product has been launched in over a dozen...  View Details
Keywords: Index Insurance; Labor Markets; Self-insurance; Self-protection; Weather; Insurance; Markets; Household; Risk Management
Related

Are you looking for?

→ Search All HBS Web