Publications

April 2005
Article

The Geography of Equity Analysis

By: Christopher J. Malloy

I provide evidence that geographically proximate analysts are more accurate than other analysts. Stock returns immediately surrounding forecast revisions suggest that local analysts impact prices more than other analysts. These effects are strongest for firms located... View Details

Keywords: Geographic Location; Stocks; Investment Return; Forecasting and Prediction; Price; Performance; Equity; Information; Prejudice and Bias; Agency Theory

24 Oct 2018
HBS Seminar

Ina Ganguli, University of Massachusetts Amherst

06 Aug 2009
Working Paper Summaries

Buy Local? The Geography of Successful and Unsuccessful Venture Capital Expansion

Keywords: by Henry Chen, Paul A. Gompers, Anna Kovner & Josh Lerner

May 2024
Supplement

gWorks (A)

By: Richard S. Ruback and Royce Yudkoff

In January of 2019, Joe Heieck, CEO of gWorks, was deciding whether to proceed with his acquisition of Data Tech, that was a business roughly the same size as gWorks. gWorks, which provided geospatial software to small city and rural county governments, was acquired by... View Details

June 2023
Case

Rent Control in Boston, Again?

By: Robin Greenwood, Richard S. Ruback, Robert Ialenti and Tom Quinn

This case explores the merits and drawbacks of Boston Mayor Michelle Wu’s proposal to bring rent control back to the city in 2023. It lays out the features, objectives, and potential unintended consequences of this policy, before highlighting the expected impact of... View Details

Keywords: Renting or Rental; Housing; Urban Development; Policy; Boston; Massachusetts

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... View Details

Keywords: Peer To Peer; Airbnb; Digital Platforms; Market Entry and Exit; Competition; Accommodations Industry

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April 2017
Supplement

CIC: Catalyzing Entrepreneurial Ecosystems (B)

By: William R. Kerr, Sari Kerr and Alexis Brownell

CIC engages in "guerrilla warfare," offering free or highly discounted rates in order to get its empty offices filled before the opening day of its St. Louis branch. Opening day is a huge success, and CIC St. Louis grows rapidly, even opening a second building. In the... View Details

Keywords: Start-ups; Boston; Cambridge; St. Louis; CIC; Cambridge Innovation Center; Co-working Space; Entrepreneurial Ecosystems; Innovation Ecosystems; Entrepreneurship; Business Startups; Expansion; Growth and Development Strategy; Boston; Cambridge; St. Louis

October 2013 (Revised April 2016)
Case

StriveTogether: Reinventing the Local Education Ecosystem

By: Allen Grossman, Ann Lombard and Noah Fisher

StriveTogether aimed to improve education outcomes by coordinating the actions of diverse community stakeholders—nonprofit service providers, school districts, government, parents, businesses and others. StriveTogether had an intense focus on collective impact—"the... View Details

Keywords: Education Reform; Not For Profit; Communities; Collaboration; Collective Impact; Nonprofit Organizations; Education; Business and Community Relations; Education Industry; United States

July 2010
Article

The Supply Side of Innovation: H-1B Visa Reforms and U.S. Ethnic Invention

By: William R. Kerr and William F. Lincoln

This study evaluates the impact of high-skilled immigrants on U.S. technology formation. We use reduced-form specifications that exploit large changes in the H-1B visa program. Higher H-1B admissions increase immigrant science and engineering (SE) employment and... View Details

Keywords: Engineering; Governing Rules, Regulations, and Reforms; Policy; Immigration; Innovation and Invention; Patents; Business and Government Relations; Science; United States

2009
Working Paper

Clusters of Entrepreneurship

By: Edward L. Glaeser, William R. Kerr and Giacomo A.M. Ponzetto

Employment growth is strongly predicted by smaller average establishment size, both across cities and across industries within cities, but there is little consensus on why this relationship exists. Traditional economic explanations emphasize factors that reduce entry... View Details

Keywords: Economic Growth; Entrepreneurship; Cost; Employment; Market Entry and Exit

04 May 2012
News

Energy Clusters

18 Jul 2017
News

Harvard Business School: Beauty Decoded

01 Mar 2013
Video

HBS at the Kumbh Mela

Jan W. Rivkin

Jan W. Rivkin is a Professor in the Strategy Unit at Harvard Business School. In the past, he has served as Faculty Chair of the MBA Program, Senior Associate Dean for Research, and head of the Strategy Unit. His research, course development, and teaching focus on... View Details

Keywords: airline; computer; internet; music; transportation

January 2025
Article

Everyone Steps Back?: The Widespread Retraction of Crowd-Funding Support for Minority Creators When Migration Fear Is High

By: John (Jianqui) Bai, William R. Kerr, Chi Wan and Alptug Yorulmaz

We study funding gaps on Kickstarter across multiple ethnic groups from 2009 to 2021. Scaling the concept of racially salient events, we quantify the close co-movement of minority funding gaps in crowd-funding to inflamed political rhetoric surrounding migration. The... View Details

Keywords: Crowdfunding; Prejudice and Bias; Race; Immigration; Public Opinion

2018
Working Paper

The Welfare Effects of Peer Entry in the Accommodation Market: The Case of Airbnb

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... View Details

Keywords: Peer To Peer; Digital Platforms; Market Entry and Exit; Competition; Accommodations Industry

June 2002
Case

"One Country, Two Systems"? Italy and the Mezzogiorno (B)

By: Bruce R. Scott and Jamie Matthews

In 1992, a corruption investigation and two assassinations created a crisis that prompted the Italian government to dispatch 7,000 troops to Sicily to "retake the island" from the Mafia. This case examines the crisis and the efforts of both the Italian state and the... View Details

Keywords: History; National Security; Crime and Corruption; Economic Slowdown and Stagnation; Italy

February 2016 (Revised February 2018)
Case

The Battle over the Initiative and Referendum in Massachusetts (1918)

By: David Moss and Dean Grodzins

On Election Day in 1918, Massachusetts voters would have to decide not only on their preferred candidates for governor and U.S. Senator, but also whether or not to approve 19 proposed amendments to the state constitution. By far the most controversial of these would... View Details

Keywords: Political Elections; Government Legislation; Power and Influence; History; Massachusetts

October 2023 (Revised March 2024)
Case

KOKO Networks: Bridging Energy Transition and Affordability with Carbon Financing

By: George Serafeim, Siko Sikochi and Namrata Arora

The problem was massive: two million hectares of African forests were lost annually to charcoal production for cooking, an area equivalent to 13 times Greater London, resulting in one billion tons of carbon emissions yearly. At the same time, an estimated 700,000... View Details

Keywords: Clean Tech; Digital; Carbon Credits; Carbon Offsetting; Climate Change; Entrepreneurship; Energy Sources; Environmental Sustainability; Health; Market Design; Business Startups; Transition; Environmental Regulation; Policy; Energy Industry; Consumer Products Industry; Africa; Kenya; Rwanda