Filter Results:
(350)
Show Results For
- All HBS Web
(527)
- News (110)
- Research (350)
- Multimedia (9)
- Faculty Publications (251)
Show Results For
- All HBS Web
(527)
- News (110)
- Research (350)
- Multimedia (9)
- Faculty Publications (251)
Sort by
- June 2023
- Simulation
Clash of Two Giants: Competing in the Age of Platforms Simulation
By: Feng Zhu and Marco Iansiti
- Forthcoming
- Article
Happily Ever After: Immigration, Natives' Marriage and Fertility
By: Michela Carlana and Marco Tabellini
We study the effects of immigration on natives’ marriage, fertility, and family formation across U.S. cities between 1910 and 1930. Using a shift-share design, we find that natives living in cities that received more immigrants were more likely to marry, have children,... View Details
Carlana, Michela, and Marco Tabellini. "Happily Ever After: Immigration, Natives' Marriage and Fertility." Journal of Economic History (forthcoming). (Winner of European Economic Association Young Economist Award, 2018. Featured in HBS Working Knowledge.)
- March 8, 2016
- Article
Cognitive Fatigue Influences Students' Performance on Standardized Tests
By: Hans Henrik Sievertsen, F. Gino and Marco Piovesan
Using test data for all children attending Danish public schools between school years 2009–2010 and 2012–2013, we examine how the time of the test affects performance. Test time is determined by the weekly class schedule and computer availability at the school. We find... View Details
Sievertsen, Hans Henrik, F. Gino, and Marco Piovesan. "Cognitive Fatigue Influences Students' Performance on Standardized Tests." Proceedings of the National Academy of Sciences 113, no. 10 (March 8, 2016).
- 2019
- Working Paper
Racial Heterogeneity and Local Government Finances: Evidence from the Great Migration
By: Marco Tabellini
Between 1915 and 1930, during the First Great Migration, more than 1.5 million African Americans migrated from the South to the North of the United States, altering the racial profile of several northern cities for the first time in American history. I exploit this... View Details
Keywords: Migration; Race; City; Financial Condition; Government and Politics; History; United States
Tabellini, Marco. "Racial Heterogeneity and Local Government Finances: Evidence from the Great Migration." Harvard Business School Working Paper, No. 19-006, July 2018. (Revised September 2019. Featured in Harvard Magazine.)
- 2007
- Working Paper
Dynamics of Platform Competition: Exploring the Role of Installed Base, Platform Quality and Consumer Expectations
By: Feng Zhu and Marco Iansiti
This paper seeks to answer three questions. First, which drives the success of a platform, installed base, platform quality or consumer expectations? Second, when does a monopoly emerge in a platform-based market? Finally, when is a platform-based market socially... View Details
Keywords: Price; Network Effects; Digital Platforms; Monopoly; Quality; Competitive Advantage; Digital Platforms
Zhu, Feng, and Marco Iansiti. "Dynamics of Platform Competition: Exploring the Role of Installed Base, Platform Quality and Consumer Expectations." Harvard Business School Working Paper, No. 08-031, November 2007.
- Article
Entry into Platform-based Markets
By: Feng Zhu and Marco Iansiti
This paper examines the relative importance of platform quality, indirect network effects, and consumer expectations on the success of entrants in platform-based markets. We develop a theoretical model and find that an entrant's success depends on the strength of... View Details
Keywords: Platform-based Markets; Winnter-take-all; First-mover Advantage; Indirect Network Effects; Video Game Industry; Quality; Network Effects; Market Entry and Exit; Digital Platforms; Motion Pictures and Video Industry
Zhu, Feng, and Marco Iansiti. "Entry into Platform-based Markets." Strategic Management Journal 33, no. 1 (January 2012): 88–106.
- Working Paper
Index Rebalancing and Stock Market Composition: Do Indexes Time the Market?
By: Marco Sammon and John J. Shim
Value-weighted indexes must rebalance in response to stock market composition changes, e.g., issuance, buybacks, and IPOs. In doing so, existing index funds implicitly engage in market timing. Index funds’ long-short rebalancing portfolios have a -3.5% annual return... View Details
Sammon, Marco, and John J. Shim. "Index Rebalancing and Stock Market Composition: Do Indexes Time the Market?" SSRN Working Paper Series, No. 5080459, May 2025.
- Article
The Unintended Consequences of the Zero Lower Bound Policy
By: Marco Di Maggio and Marcin Kacperczyk
We study the impact of the zero lower bound interest rate policy on the industrial organization of the U.S. money fund industry. We find that in response to policies that maintain low interest rates, money funds change their product offerings by investing in riskier... View Details
Keywords: Quantitative Easing; Money Market Funds; Reaching For Yield; Risk Taking; Fund Exit; Unconventional Monetary Policy; Investment Funds; Interest Rates
Di Maggio, Marco, and Marcin Kacperczyk. "The Unintended Consequences of the Zero Lower Bound Policy." Journal of Financial Economics 123, no. 1 (January 2017): 59–80.
- 2024
- Working Paper
Primary Capital Market Transactions and Index Funds
By: Marco Sammon and Chris Murray
We document the effects of mechanical buying by CRSP-index-tracking funds on post-IPO returns and IPO deal structure. Leveraging a difference-in-differences-style design built on a 2017 CRSP rule change, we find that expected index fund demand leads fast track IPOs to... View Details
Keywords: Investment Funds; Initial Public Offering; Investment Return; Price; Market Transactions; Financial Markets
Sammon, Marco, and Chris Murray. "Primary Capital Market Transactions and Index Funds." Working Paper, August 2024.
- 2021
- Case
NiPay's Pricing Conundrum
By: Marco Bertini and Oded Koenigsberg
NiPay is a software provider competing in the Nigerian business-to-business payments market. Founded by Idaku Ibrahim nearly 20 years ago, NiPay sells two products to retailers and other merchants, which enable individual shoppers to transact either online or via a... View Details
Bertini, Marco, and Oded Koenigsberg. "NiPay's Pricing Conundrum." London Business School Case, 2021. Electronic.
- Article
The Value of Intermediation in the Stock Market
By: Marco Di Maggio, Mark Egan and Francesco Franzoni
We estimate a structural model of broker choice to quantitatively decompose the value that institutional investors attach to broker services. Studying over 300 million institutional equity trades, we find that investors are sensitive to both explicit and implicit... View Details
Keywords: Financial Intermediation; Institutional Investors; Research Analysts; Broker Networks; Equity Trading; Institutional Investing
Di Maggio, Marco, Mark Egan, and Francesco Franzoni. "The Value of Intermediation in the Stock Market." Journal of Financial Economics 145, no. 2A (August 2022): 208–233.
- July 2025
- Article
Economic Integration and the Transmission of Democracy
By: Marco Tabellini and Giacomo Magistretti
In this paper, we study the effects of economic integration with democratic partners on democracy. We assemble a large country-level panel dataset from 1960 to 2015, and exploit improvements in air, relative to sea, transportation to derive a time-varying instrument... View Details
Keywords: Democratization; Institutional Development; Economic Integration; International Trade; Democracy; Political Preferences; Institutions; Trade; Global Range; Economics; Government and Politics
Tabellini, Marco, and Giacomo Magistretti. "Economic Integration and the Transmission of Democracy." Review of Economic Studies 92, no. 4 (July 2025): 2765–2792. (Available also from VOX, VOXEU, Atlantico, The Economist, Domani, and Ideas for India. Longer NBER working paper version available here.)
- 04 Dec 2007
- First Look
First Look: December 4, 2007
and Consumer Expectations Authors:Feng Zhu and Marco Iansiti Abstract This paper seeks to answer three questions. First, which drives the success of a platform, installed base, platform quality or consumer... View Details
Keywords: Martha Lagace
- February 2010 (Revised December 2011)
- Case
Ricoh Company, Ltd.
By: Robert G. Eccles, Amy C. Edmondson, Marco Iansiti and Akiko Kanno
Ricoh, the Japanese copier manufacturer, is committed to reducing its environmental impact to one-eighth of its 2000 levels by 2050. It has already introduced three stages of environmental awareness to its operations, and its recycled copier business broke even in... View Details
Keywords: Environmental Accounting; Financial Reporting; Integrated Corporate Reporting; Investment; Operations; Corporate Social Responsibility and Impact; Environmental Sustainability; Electronics Industry; Manufacturing Industry; Japan
Eccles, Robert G., Amy C. Edmondson, Marco Iansiti, and Akiko Kanno. "Ricoh Company, Ltd." Harvard Business School Case 610-053, February 2010. (Revised December 2011.)
- October 2021
- Article
Fintech Borrowers: Lax Screening or Cream-Skimming?
By: Marco Di Maggio and Vincent Yao
Personal credit is the fastest-growing segment of the consumer credit market, mainly driven by fintech lenders' staggering expansion. We study this market using a unique individual-level data, which covers most of the top fintech and traditional lenders, and provides... View Details
Keywords: Fintech; Lending; Consumer Finance; Credit History; Self-control; Present Bias; Financing and Loans; Personal Finance; Credit; Behavior
Di Maggio, Marco, and Vincent Yao. "Fintech Borrowers: Lax Screening or Cream-Skimming?" Review of Financial Studies 34, no. 10 (October 2021): 4565–4618. (LEAD ARTICLE and EDITOR'S CHOICE.)
- 2021
- Working Paper
The Value of Data and Its Impact on Competition
By: Marco Iansiti
Common regulatory perspective on the relationship between data, value, and competition in online platforms has increasingly centered on the volume of data accumulated by incumbent firms. This view posits the existence of "data network effects," where more data leads to... View Details
Keywords: Online Platforms; Data Network Effects; Analytics and Data Science; Value; Competition; Digital Platforms
Iansiti, Marco. "The Value of Data and Its Impact on Competition." Harvard Business School Working Paper, No. 22-002, July 2021.
- January 2020
- Article
Gifts of the Immigrants, Woes of the Natives: Lessons from the Age of Mass Migration
By: Marco Tabellini
In this paper, I jointly investigate the political and the economic effects of immigration and study the causes of anti-immigrant sentiments. I exploit exogenous variation in European immigration to U.S. cities between 1910 and 1930 induced by World War I and the... View Details
Keywords: Political Backlash; Age Of Mass Migration; Cultural Diversity; Immigration; History; Economy; Attitudes; Cross-Cultural and Cross-Border Issues; Diversity
Tabellini, Marco. "Gifts of the Immigrants, Woes of the Natives: Lessons from the Age of Mass Migration." Review of Economic Studies 87, no. 1 (January 2020): 454–486. (Also Harvard Business School Working Paper, No. 19-005, July 2018. Available also from Cato Institute, Microeconomic Insights, VOX, Broadstreet, Cato Institute, and in Oxford University Press's Blog.)
- 2021
- Working Paper
The Value of Intermediation in the Stock Market
By: Marco Di Maggio, Mark Egan and Francesco Franzoni
We estimate a structural model of broker choice to quantitatively decompose the value that institutional investors attach to broker services. Studying over 300 million institutional equity trades, we find that investors are sensitive to both explicit and implicit... View Details
Keywords: Financial Intermediation; Institutional Investors; Research Analysts; Broker Networks; Equity Trading; Institutional Investing; Financial Services Industry
Di Maggio, Marco, Mark Egan, and Francesco Franzoni. "The Value of Intermediation in the Stock Market." Harvard Business School Working Paper, No. 20-016, August 2019. (Revised June 2021. Accepted at the Journal of Financial Economics.)
- 2021
- Working Paper
Time and the Value of Data
By: Ehsan Valavi, Joel Hestness, Newsha Ardalani and Marco Iansiti
Managers often believe that collecting more data will continually improve the accuracy of their machine learning models. However, we argue in this paper that when data lose relevance over time, it may be optimal to collect a limited amount of recent data instead of... View Details
Keywords: Economics Of AI; Machine Learning; Non-stationarity; Perishability; Value Depreciation; Analytics and Data Science; Value
Valavi, Ehsan, Joel Hestness, Newsha Ardalani, and Marco Iansiti. "Time and the Value of Data." Harvard Business School Working Paper, No. 21-016, August 2020. (Revised November 2021.)
- September 2015
- Case
Deflategate and the National Football League
By: Marco Iansiti and Christine Snively
On January 18, 2015, the New England Patriots faced the Indianapolis Colts in the AFC Championship game. In the second quarter, a Colts player intercepted a pass from Patriots quarterback Tom Brady. Colts equipment personnel alerted NFL officials that the ball's air... View Details
Keywords: ＂Deflategate＂; Analytics; National Football League; NFLPA; Roger Goodell; Tom Brady; Operations; United States
Iansiti, Marco, and Christine Snively. "Deflategate and the National Football League." Harvard Business School Case 616-008, September 2015.