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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...
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- 2022
- Working Paper
Consumer Demand with Social Influences: Evidence from an E-Commerce Platform
By: El Hadi Caoui, Chiara Farronato, John J. Horton and Robert Schultz
For some kinds of goods, rarity itself is valued. "Fashionable'" goods are demanded in part because they are unique. In this paper, we explore the economics of rare goods using auctions of limited-edition shoes held by an e-commerce platform. We model endogenous entry...
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- June 2022
- Article
The Welfare Effects of Peer Entry in the Accommodation Market: The Case of Airbnb and the Accommodation Industry
By: Chiara Farronato and Andrey Fradkin
We study the effects of enabling peer supply through Airbnb in the accommodation industry. We present a model of competition between flexible and dedicated sellers—peer hosts and hotels—who provide differentiated products. We estimate this model using data from major...
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- March 2022
- Teaching Note
Telepass: From Tolling to Mobility Platform
By: Chiara Farronato
Teaching Note for HBS Case Nos. 622-011 and 622-050.
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- 2022
- Working Paper
Consumer Reviews and Regulation: Evidence from NYC Restaurants
By: Chiara Farronato and Georgios Zervas
We investigate the informativeness of hygiene signals in online reviews, and their effect on consumer choice and restaurant hygiene. We first extract signals of hygiene from Yelp. Among all dimensions that regulators monitor through mandated restaurant inspections, we...
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- January 2022
- Supplement
Innovation at Uber: The Launch of Express POOL Assignment Solutions Video
By: Chiara Farronato and Caleb Kwon
Video Supplement for HBS Case No. 622-053.
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- January 2022
- Teaching Note
Innovation at Uber: The Launch of Express POOL Assignment Solutions: Comparing Commuting and Non-Commuting Hours
By: Chiara Farronato and Caleb Kwon
- January 2022
- Supplement
Innovation at Uber: The Launch of Express POOL Assignment: Comparing Commuting and Non-Commuting Hours
By: Chiara Farronato and Caleb Kwon
- October 18, 2021
- Article
To Regulate Network-Based Platforms, Look at Their Data
By: Chiara Farronato and Daniel Björkegren
Historically, antitrust authorities have taken a laissez-faire approach under the assumption that it is better to err on the side of not intervening when there is uncertainty. This has allowed companies like Google and Facebook to go on a shopping spree to acquire...
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- September 2021
- Supplement
Telepass: From Tolling to Mobility Platform
By: Chiara Farronato, Stefano Denicolai and Sarah Mehta
This supplementary dataset can be paired with the case entitled “Telepass: From Tolling to Mobility Platform” (case no. 622-011), to allow students the opportunity to analyze data before class.
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Keywords:
Analysis;
Change;
Change Management;
Transformation;
Transition;
Innovation and Invention;
Strategy;
Information Technology;
Mobile and Wireless Technology;
Transportation;
Transportation Networks;
Value;
Value Creation;
Technology Industry;
Transportation Industry;
Insurance Industry;
Europe;
Italy;
Milan
- September 2021 (Revised December 2021)
- Case
Telepass: From Tolling to Mobility Platform
By: Chiara Farronato, Stefano Denicolai and Sarah Mehta
Telepass, until very recently the sole processor of electronic toll payments on Italy’s highways, has ambitions beyond tolling. Since the mid-2010s, the company has been expanding into adjacent services. In 2017, Telepass launched TelepassPay—a mobile payment...
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Keywords:
Mobile Payment;
App;
Mobility Services;
Analysis;
Change;
Change Management;
Transformation;
Transition;
Innovation and Invention;
Strategy;
Information Technology;
Mobile and Wireless Technology;
Transportation;
Transportation Networks;
Value;
Value Creation;
Consumer Behavior;
Technology Industry;
Transportation Industry;
Insurance Industry;
Europe;
Italy;
Milan
- September 2021 (Revised December 2021)
- Case
Telepass: From Tolling to Mobility Platform (Abridged)
By: Chiara Farronato, Stefano Denicolai and Sarah Mehta
Telepass, until very recently the sole processor of electronic toll payments on Italy’s highways, has ambitions beyond tolling. Since the mid-2010s, the company has been expanding into adjacent services. In 2017, Telepass launched TelepassPay—a mobile payment...
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Keywords:
Mobile Payment;
App;
Mobility Services;
Analysis;
Change;
Change Management;
Transformation;
Transition;
Innovation and Invention;
Strategy;
Information Technology;
Mobile and Wireless Technology;
Transportation;
Transportation Networks;
Value;
Value Creation;
Technology Industry;
Transportation Industry;
Insurance Industry;
Europe;
Italy;
Milan
- August 2021
- Case
Precision Paint Co.
Describes a marketing director about to launch a new process for demand forecasting. Provides data that allow students to do a multivariable regression analysis. A rewritten version of an earlier case.
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- August 2021 (Revised February 2022)
- Case
Lexoo: Building a Long-Lasting Platform (Abridged)
By: Chiara Farronato and Elena Corsi
Lexoo, a UK-based online marketplace for legal services, was facing the strategic choice of how to grow from early start-up to mature platform. Daniel van Binsbergen, Lexoo's CEO, and web developer Chris O'Sullivan, CTO, had set up Lexoo to help Small and Medium-Sized...
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- July 2021
- Article
Outsourcing Tasks Online: Matching Supply and Demand on Peer-to-Peer Internet Platforms
By: Zoë Cullen and Chiara Farronato
We study the growth of online peer-to-peer markets. Using data from TaskRabbit, an expanding marketplace for domestic tasks at the time of our study, we show that growth varies considerably across cities. To disentangle the potential drivers of growth, we look...
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- June 2021 (Revised March 2022)
- Teaching Note
StockX: The Stock Market of Things
By: Chiara Farronato
Teaching Note for HBS Case Nos. 620-062 and 621-107.
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- April 2021 (Revised July 2021)
- Case
StockX: The Stock Market of Things (Abridged)
By: Chiara Farronato, John J. Horton, Annelena Lobb and Julia Kelley
Founded in 2015 by Dan Gilbert, Josh Luber, and Greg Schwartz, StockX was an online platform where users could buy and sell unworn luxury and limited-edition sneakers. Sneaker resale prices often fluctuated over time based on supply and demand, creating a robust...
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Keywords:
Markets;
Auctions;
Bids and Bidding;
Demand and Consumers;
Consumer Behavior;
Analytics and Data Science;
Market Design;
Digital Platforms;
Market Transactions;
Marketplace Matching;
Supply and Industry;
Analysis;
Price;
Product Marketing;
Product Launch;
Apparel and Accessories Industry;
Fashion Industry;
North and Central America;
United States;
Michigan;
Detroit
- February 2021
- Tutorial
Getting Started in RStudio Cloud
By: Chiara Farronato and Caleb Kwon
This video provides an introduction to the free programming language R using an online cloud version of RStudio, which is the most popular editor and interface for writing and executing R code. The video begins by providing a brief background of R and RStudio and...
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- February 2021
- Tutorial
T-tests: Theory and Practice
This video provides an introduction to hypothesis testing, sampling, t-tests, and p-values. It provides examples of A/B testing and t-testing to assess whether difference between two groups are statistically significant. This video can be assigned in conjunction with...
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- 2020
- Working Paper
Dog Eat Dog: Balancing Network Effects and Differentiation in a Digital Platform Merger
By: Chiara Farronato, Jessica Fong and Andrey Fradkin
Digital platforms are increasingly the subject of regulatory scrutiny. In comparison to multiple competitors, a single platform may increase consumer welfare if network effects are large or may decrease welfare due to higher prices or reduction in platform variety. We...
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