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    • All HBS Web  (458)
      • Faculty Publications  (45)

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      • February 2023
      • Article

      OTC Intermediaries

      By: Andrea L. Eisfeldt, Bernard Herskovic, Sriram Rajan and Emil Siriwardane
      We study the effect of dealer exit on prices and quantities in a model of an over-the-counter (OTC) market featuring a core-periphery network with bilateral trading costs. The model is calibrated using regulatory data on the entire U.S. credit default swap (CDS) market...  View Details
      Keywords: OTC Markets; Intermediaries; Dealers; Credit Default Swaps; Risk Sharing; Financial Markets; Networks; Price; Risk and Uncertainty
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      Eisfeldt, Andrea L., Bernard Herskovic, Sriram Rajan, and Emil Siriwardane. "OTC Intermediaries." Review of Financial Studies 36, no. 2 (February 2023): 615–677.
      • August 2022
      • 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
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      Di Maggio, Marco, Mark Egan, and Francesco Franzoni. "The Value of Intermediation in the Stock Market." Journal of Financial Economics 145, nos. 2, Part A (August 2022): 208–233.
      • 2022
      • Working Paper

      Hidden Alpha

      By: Lauren Cohen, Manuel Amman, Alexander Cochardt and Stephan Heller
      Using the setting of financial agents, we explore the importance of hidden connections relative to all other network connections. We find that hidden connections are those associated with the largest and most significant abnormal returns accruing to fund managers—on...  View Details
      Keywords: Returns; Investment Return; Networks
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      Cohen, Lauren, Manuel Amman, Alexander Cochardt, and Stephan Heller. "Hidden Alpha." Working Paper, 2022.
      • 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...  View Details
      Keywords: Antitrust Issues And Policies; Risk and Uncertainty; Digital Platforms; Competitive Advantage; Governing Rules, Regulations, and Reforms; Innovation and Invention; Information Technology Industry
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      Farronato, Chiara, and Daniel Björkegren. "To Regulate Network-Based Platforms, Look at Their Data." Harvard Business Review Digital Articles (October 18, 2021).
      • April 2021
      • Case

      The Clean Network and the Future of Global Technology Competition

      By: Meg Rithmire and Courtney Han
      In May 2019, amidst of an ever-worsening trade war between the U.S. and China, President Donald Trump added Chinese telecom giant Huawei to the Department of Commerce’s “entity list,” essentially forbidding American firms from doing business with the company. Huawei,...  View Details
      Keywords: 5G; Telecommunications; Information Technology; Internet and the Web; Mobile and Wireless Technology; Trade; Competition; International Relations; Telecommunications Industry; China
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      Rithmire, Meg, and Courtney Han. "The Clean Network and the Future of Global Technology Competition." Harvard Business School Case 721-045, April 2021.
      • March 2021
      • Teaching Note

      eToro: Building the World’s Largest Social Trading Network

      By: Elie Ofek
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      Ofek, Elie. "eToro: Building the World’s Largest Social Trading Network." Harvard Business School Teaching Note 521-088, March 2021.
      • 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
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      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.)
      • 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
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      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.
      • Summer 2020
      • Article

      Is It Time to Rethink Globalized Supply Chains?: The COVID-19 Pandemic Should Be a Wake-up Call for Managers and Prompt Them to Consider Actions That Will Improve Their Resilience to Future Shocks

      By: Willy C. Shih
      The COVID-19 pandemic has exposed the complex interdependencies of globalized supply chains. While these global multistage production networks had spread during a relatively benign environment of falling trade barriers and increasing interdependencies among countries,...  View Details
      Keywords: Supply Chains; Pandemic; Resilience; Supply Chain Management; Supply Chain; Global Range; Health Pandemics; Disruption; System Shocks; Crisis Management; Manufacturing Industry; United States; Asia; Europe; China
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      Shih, Willy C. "Is It Time to Rethink Globalized Supply Chains? The COVID-19 Pandemic Should Be a Wake-up Call for Managers and Prompt Them to Consider Actions That Will Improve Their Resilience to Future Shocks." MIT Sloan Management Review 61, no. 4 (Summer 2020): 16–18.
      • January 2020
      • Case

      SK Group: Social Progress Credits

      By: George Serafeim, Ethan Rouen and David Freiberg
      SK Group was one of the largest companies South Korea. A family-run conglomerate consisting of around 120 subsidiaries and employing more than 100,000, SK was tightly knit into the fabric of Korean society. SK viewed their future success as contingent upon the strength...  View Details
      Keywords: Impact; Impact Investing; Impact Measurement; Social Value; Social Development; Conglomerates; Measurement Of Purpose; ESG; ESG (Environmental, Social, Governance) Performance; Capital Markets; Innovation; Environmental Impact; Collaboration; Social Enterprise; Social and Collaborative Networks; Social Issues; Measurement and Metrics; Value Creation; Cooperation; Environmental Sustainability; Employment; Accounting; Energy Industry; Telecommunications Industry; Chemical Industry; South Korea
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      Serafeim, George, Ethan Rouen, and David Freiberg. "SK Group: Social Progress Credits." Harvard Business School Case 120-071, January 2020.
      • 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
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      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.
      • 2019
      • Chapter

      The Republic of Turkey

      By: Kristin Fabbe
      Situated between Europe and Asia, Turkey occupies a critical geostrategic position in the world. This unique geography, no doubt, has much to do with the complexities and continuities that have characterized the country’s political development. Turkey is anchored to...  View Details
      Keywords: Government and Politics; International Relations; Turkey
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      Fabbe, Kristin. "The Republic of Turkey." Chap. 14 in Government and Politics of the Middle East and North Africa: Development, Democracy, and Dictatorship. 9th ed. Edited by Sean Yom. New York: Routledge, 2019.
      • 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
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      Ofek, Elie, and John Masko. "Huawei and the U.S.-China Trade War." Harvard Business School Case 520-017, August 2019.
      • 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
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      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.)
      • 2019
      • Article

      Structural Balance Emerges and Explains Performance in Risky Decision-Making

      By: Omid Askarisichani, Jacqueline N. Lane, Francesco Bullo, Noah E. Friedkin, Ambuj K. Singh and Brian Uzzi
      Polarization affects many forms of social organization. A key issue focuses on which affective relationships are prone to change and how their change relates to performance. In this study, we analyze a financial institutional over a two-year period that employed 66...  View Details
      Keywords: Polarization; Structural Balance; Performance; Groups and Teams; Risk and Uncertainty; Decision Making
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      Askarisichani, Omid, Jacqueline N. Lane, Francesco Bullo, Noah E. Friedkin, Ambuj K. Singh, and Brian Uzzi. "Structural Balance Emerges and Explains Performance in Risky Decision-Making." Art. 2648. Nature Communications 10 (2019): 1–10.
      • 2018
      • Working Paper

      OTC Intermediaries

      By: Andrea L. Eisfeldt, Bernard Herskovic, Sriram Rajan and Emil Siriwardane
      Over-the-counter (OTC) markets for financial assets are dominated by a relatively small number of core intermediaries and a large number of peripheral customers. In this paper, we develop a model of trade in a core-periphery network and estimate its key structural...  View Details
      Keywords: OTC Markets; Intermediaries; Dealers; Credit Default Swaps; Risk Sharing; Networks; Price; Risk and Uncertainty
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      Eisfeldt, Andrea L., Bernard Herskovic, Sriram Rajan, and Emil Siriwardane. "OTC Intermediaries." Working Paper, August 2018.
      • April 2018 (Revised July 2018)
      • Case

      Maersk: Betting on Blockchain

      By: Rajiv Lal and Scott Johnson
      In March 2018, international shipping giant Maersk is getting ready to debut a trade digitization platform. Maersk hopes the platform will help streamline global trade since shipping goods internationally is an extraordinarily complicated and inefficient process....  View Details
      Keywords: Maersk; IBM; Blockchain; Shipping; Shipping Line; Trade; Bitcoin; Digitization; Container Shipping; Joint Ventures; Ship Transportation; Transportation Networks; Digital Platforms; Information Technology; Technology Adoption; Applications and Software; Shipping Industry; Technology Industry
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      Lal, Rajiv, and Scott Johnson. "Maersk: Betting on Blockchain." Harvard Business School Case 518-089, April 2018. (Revised July 2018.)
      • February 2018
      • Article

      Heterogeneous Technology Diffusion and Ricardian Trade Patterns

      By: William R. Kerr
      This study tests the importance of Ricardian technology differences for international trade. The empirical analysis has three comparative advantages: including emerging and advanced economies, isolating panel variation regarding the link between productivity and...  View Details
      Keywords: Exports; Comparative Advantage; Technological Transfer; Innovation; Networks; Patents; Residency; Technology Adoption; Trade; Research and Development; Immigration; United States
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      Kerr, William R. "Heterogeneous Technology Diffusion and Ricardian Trade Patterns." World Bank Economic Review 32, no. 1 (February 2018): 163–182.
      • October 2017
      • Supplement

      Maggie Wilderotter: The Evolution of an Executive: Video Supplement

      By: Boris Groysberg, Sarah L. Abbott and Robin Abrahams
      In a career that spanned over 30 years, Maggie Wilderotter served as CEO of two publicly traded companies and served on 32 corporate and nine association and non-profit boards of directors. The case looks at the progression of Wilderotter’s career; the decisions she...  View Details
      Keywords: Leadership; Managing People; Networks; Strategy And Leadership; Personal Development and Career; Personal Characteristics; Leadership Style; Social and Collaborative Networks; Gender; Power and Influence; Telecommunications Industry; United States
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      Groysberg, Boris, Sarah L. Abbott, and Robin Abrahams. "Maggie Wilderotter: The Evolution of an Executive: Video Supplement." Harvard Business School Multimedia/Video Supplement 418-702, October 2017.
      • June 2017
      • Case

      Maggie Wilderotter: The Evolution of an Executive

      By: Boris Groysberg, Sarah L. Abbott and Robin Abrahams
      In a career that spanned over 30 years, Maggie Wilderotter served as CEO of two publicly traded companies and served on 32 corporate and 9 association and nonprofit boards of directors. As CEO of Frontier Communications, a U.S. telecom company with over $25 billion in...  View Details
      Keywords: Leadership; Managing People; Networks; Strategy And Leadership; Personal Development and Career; Personal Characteristics; Leadership Style; Social and Collaborative Networks; Gender; Power and Influence; Telecommunications Industry; United States
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      Groysberg, Boris, Sarah L. Abbott, and Robin Abrahams. "Maggie Wilderotter: The Evolution of an Executive." Harvard Business School Case 417-091, June 2017.
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