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- People (2)
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- September 2019
- Article
Trading Networks with Frictions
By: Tamás Fleiner, Ravi Jagadeesan, Zsuzsanna Jankó and Alexander Teytelboym
We show how frictions and continuous transfers jointly affect equilibria in a model of matching in trading networks. Our model incorporates distortionary frictions such as transaction taxes and commissions. When contracts are fully substitutable for firms, competitive... View Details
Keywords: Trading Networks; Frictions; Competitive Equilibrium; Matching With Contracts; Stability; Trail Stability
Fleiner, Tamás, Ravi Jagadeesan, Zsuzsanna Jankó, and Alexander Teytelboym. "Trading Networks with Frictions." Econometrica 87, no. 5 (September 2019): 1633–1661.
- January 2021
- Article
Chain Stability in Trading Networks
By: John William Hatfield, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky and Alexander Westkamp
We show that in general trading networks with bilateral contracts, a suitably adapted chain stability concept (Ostrovsky, 2008) is equivalent to stability (Hatfield and Kominers, 2012; Hatfield et al., 2013) if all agents' preferences are fully substitutable and... View Details
Keywords: Matching; Trading Networks; Chain Stability; Stability; Competitive Equilibria; Full Substitutability; Laws Of Aggregate Supply And Demand; Contracts; Market Design; Balance and Stability
Hatfield, John William, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky, and Alexander Westkamp. "Chain Stability in Trading Networks." Theoretical Economics 16, no. 1 (January 2021): 197–234.
- January 2021 (Revised October 2021)
- Case
eToro: Building the World's Largest Social Trading Network
By: Elie Ofek and Danielle Golan
Social trading platform eToro was preparing for the launch of its expanded offering in the U.S. The company faced critical decisions regarding product-market fit, go-to-market strategy, positioning and monetization. Moreover, it faced the challenge of how best to make... View Details
Keywords: Social Trading Platform; Investment; Social and Collaborative Networks; Marketing Strategy; Expansion; Digital Platforms
Ofek, Elie, and Danielle Golan. "eToro: Building the World's Largest Social Trading Network." Harvard Business School Case 521-057, January 2021. (Revised October 2021.)
- Article
Stability and Competitive Equilibrium in Trading Networks
By: John William Hatfield, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky and Alexander Westkamp
We introduce a model in which agents in a network can trade via bilateral contracts. We find that when continuous transfers are allowed and utilities are quasi-linear, the full substitutability of preferences is sufficient to guarantee the existence of stable outcomes... View Details
Hatfield, John William, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky, and Alexander Westkamp. "Stability and Competitive Equilibrium in Trading Networks." Journal of Political Economy 121, no. 5 (October 2013): 966–1001.
- February 2017
- Article
Resident Networks and Corporate Connections: Evidence from World War II Internment Camps
By: Lauren Cohen, Umit Gurun and Christopher J. Malloy
We demonstrate that simply by using the ethnic makeup surrounding a firm’s location, we can predict, on average, which trade links are valuable for firms. Using customs and port authority data on the international shipments of all U.S. publicly traded firms, we show... View Details
Keywords: Information Networks; Trade Links; Firm Behavior; Networks; Geographic Location; Ethnicity; Organizations; Trade
Cohen, Lauren, Umit Gurun, and Christopher J. Malloy. "Resident Networks and Corporate Connections: Evidence from World War II Internment Camps." Journal of Finance 72, no. 1 (February 2017): 207–248. (Winner of First Prize, the Inaugural Hakan Orbay Research Award, 2015.)
- July 1998 (Revised February 2000)
- Case
TPN Register: The Trading Process Network
Applegate, Lynda M. "TPN Register: The Trading Process Network." Harvard Business School Case 399-015, July 1998. (Revised February 2000.)
- 2025
- Working Paper
The Political Economy of Firm Networks: CEO Ideology and Global Trade
By: Elisabeth Kempf, Mancy Luo and Margarita Tsoutsoura
We examine how the political ideology of corporate leaders shapes cross-border firm
networks. Exploiting changes in ideological alignment between U.S. firm CEOs and
foreign governments around close foreign elections, we show that U.S. firms are more
likely to... View Details
Keywords: Global Trade; Firm Networks; Political Ideology; Elections; Political Economy; Political Elections; Cross-Cultural and Cross-Border Issues; Trade
Kempf, Elisabeth, Mancy Luo, and Margarita Tsoutsoura. "The Political Economy of Firm Networks: CEO Ideology and Global Trade." Harvard Business School Working Paper, No. 25-050, April 2025.
- 2015
- Working Paper
Collateral Shortages and Intermediation Networks
By: Marco Di Maggio and Alireza Tahbaz-Salehi
This paper argues that in the presence of trading frictions and agency problems, the interbank market may be overly fragile, in the sense that small changes in the liquidity of assets used as collateral may lead to large swings in haircuts and a potential credit... View Details
- November 2019
- Article
The Relevance of Broker Networks for Information Diffusion in the Stock Market
By: Marco Di Maggio, Francesco Franzoni, Amir Kermani and Carlo Sommavilla
This paper shows that the network of relationships between brokers and institutional investors shapes information diffusion in the stock market. We exploit trade-level data to show that central brokers gather information by executing informed trades, which is then... View Details
Keywords: Broker Networks; Institutional Investors; Asset Prices; Business and Shareholder Relations; Institutional Investing; Information; Knowledge Dissemination; Financial Markets; Asset Pricing
Di Maggio, Marco, Francesco Franzoni, Amir Kermani, and Carlo Sommavilla. "The Relevance of Broker Networks for Information Diffusion in the Stock Market." Journal of Financial Economics 134, no. 2 (November 2019): 419–446.
- Article
The Value of Trading Relations in Turbulent Times
By: Marco Di Maggio, Amir Kermani and Zhaogang Song
This paper investigates how dealers’ trading relations shape their trading behavior in the corporate bond market. Dealers charge lower spreads to dealers with whom they have the strongest ties and more so during periods of market turmoil. Systemically important dealers... View Details
Keywords: OTC Markets; Network; Corporate Bonds; Crisis; Intermediation Chains; Leaning Against The Wind; Networks; Bonds; Behavior; Financial Crisis
Di Maggio, Marco, Amir Kermani, and Zhaogang Song. "The Value of Trading Relations in Turbulent Times." Journal of Financial Economics 124, no. 2 (May 2017): 266–284.
- 2023
- Working Paper
Mapping Organizational-Level Networks Using Individual-Level Connections: Evidence from Online Professional Networks
By: Shelley Xin Li, Frank Nagle and Aner Zhou
Organization-level networks facilitate the flow of information and business activities in the
economy. Prior research relies solely on high-level connections to measure these networks. Therefore, to
understand the role of employee connections at all job levels in... View Details
Keywords: Networks; Value; Social and Collaborative Networks; Innovation and Invention; Knowledge Sharing; Employees; Social Media
Li, Shelley Xin, Frank Nagle, and Aner Zhou. "Mapping Organizational-Level Networks Using Individual-Level Connections: Evidence from Online Professional Networks." Harvard Business School Working Paper, No. 24-010, August 2023.
- August 2014
- Article
Friends in High Places
By: Lauren Cohen and Christopher Malloy
We demonstrate that personal connections amongst U.S. politicians have a significant impact on Senate voting behavior. Networks based on alumni connections between politicians are consistent predictors of voting behavior. We estimate sharp measures that control for... View Details
Keywords: Vote Trading; Networks; Legislation; Logrolling; Earmarks; Voting; Government Legislation; Social and Collaborative Networks; United States
Cohen, Lauren, and Christopher Malloy. "Friends in High Places." American Economic Journal: Economic Policy 6, no. 3 (August 2014): 63–91.
- August 2019
- Case
Huawei and the U.S.-China Trade War
By: Elie Ofek and John Masko
In 2019, Chinese smartphone maker and telecommunications empire Huawei was preparing to launch its new flagship smartphone series, the Mate 30. After years of explosive growth, the previous 18 months had been a challenge for the company. In early 2018, Huawei’s planned... View Details
Keywords: Trade; Global Strategy; International Relations; National Security; Mobile and Wireless Technology; Information Infrastructure; Volatility; Adaptation; Telecommunications Industry; China; United States; European Union
Ofek, Elie, and John Masko. "Huawei and the U.S.-China Trade War." Harvard Business School Case 520-017, August 2019.
- 2016
- Working Paper
Through the Grapevine: Network Effects on the Design of Executive Compensation Contracts
By: Susanna Gallani
Effective design of executive compensation contracts involves choosing and weighting performance measures, as well as defining the mix between fixed and incentive-based pay components, with a view to fostering talent retention and goal congruence. The variability in... View Details
Keywords: Compensation Design; Board Interlocks; Compensation Consultants; Network Centrality; Homophily; Quadratic Assignment Procedure; Blockholders; Executive Compensation
Gallani, Susanna. "Through the Grapevine: Network Effects on the Design of Executive Compensation Contracts." Harvard Business School Working Paper, No. 16-019, August 2015. (Revised December, 2016.)
- 08 Jun 2011
- Lessons from the Classroom
Twenty-first Century Skill: Trading Carbon Credits
Cap and trade has become an increasingly popular mechanism used by governments to induce green behavior among corporate polluters, with news emerging almost daily. Just recently New Jersey Governor Chris Christie withdrew his state from the Regional Greenhouse Gas... View Details
- 2009
- Other Unpublished Work
Heterogeneous Technology Diffusion and Ricardian Trade Patterns
By: William R. Kerr
This study tests the importance of Ricardian technology differences for international trade. The developed panel includes both emerging and advanced economies, and particular attention is devoted to the variation exploited in empirical tests. The elasticity of export... View Details
Kerr, William R. "Heterogeneous Technology Diffusion and Ricardian Trade Patterns". 2009.
- 17 Nov 2010
- Working Paper Summaries
Network Effects in Countries’ Adoption of IFRS
Keywords: by Karthik Ramanna & Ewa Sletten
- Article
Matching in Networks with Bilateral Contracts
By: John William Hatfield and Scott Duke Kominers
We introduce a model in which firms trade goods via bilateral contracts which specify a buyer, a seller, and the terms of the exchange. This setting subsumes (many-to-many) matching with contracts, as well as supply chain matching. When firms' relationships do not... View Details
Hatfield, John William, and Scott Duke Kominers. "Matching in Networks with Bilateral Contracts." American Economic Journal: Microeconomics 4, no. 1 (February 2012): 176–208.
- April 1999
- Article
Diversification Strategies of British Trading Companies: Harrisons & Crosfield c1900-c1980
By: G. Jones and Judith Wale
This article examines the diversification strategies and organisational competencies of Harrisons & Crosfield, a British-based multinational, between 1900 and 1980. There is an accumulating body of case study evidence on the historical evolution of British... View Details
Keywords: Organizational Change and Adaptation; Diversification; Knowledge Use and Leverage; Competency and Skills; Great Britain
Jones, G., and Judith Wale. "Diversification Strategies of British Trading Companies: Harrisons & Crosfield c1900-c1980." Business History 41, no. 2 (April 1999): 69–101.