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      • Faculty Publications  (175)

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      • January 2025
      • Case

      Untapped Global: Financing Africa's Missing Middle

      By: Raymond Kluender and Emanuele Colonnelli
      In November 2024, Jim Chu, founder and CEO of Untapped Global, faced mounting internal tensions over the company’s strategic direction. Untapped had developed a data-driven revenue-based financing (RBF) model to address the “missing middle” problem—the $5.2 trillion... View Details
      Keywords: Social Entrepreneurship; Venture Capital; Working Capital; Private Equity; Financial Strategy; Microfinance; International Finance; Currency Exchange Rate; Profit Sharing; Revenue; Developing Countries and Economies; Economic Growth; Emerging Markets; Mission and Purpose; Small Business; Entrepreneurial Finance; Banking Industry; Financial Services Industry; Information Technology Industry; Technology Industry; Africa; Nigeria; South Africa; Kenya; Uganda; California; San Francisco
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      Kluender, Raymond, and Emanuele Colonnelli. "Untapped Global: Financing Africa's Missing Middle." Harvard Business School Case 825-056, January 2025.
      • January 2025
      • Case

      Index and Active Investing: Vanguard and the New Frontier of Active ETFs

      By: Marco Sammon, Luis M. Viceira and Jonathan Kanagasabai
      This case explores Vanguard’s strategic decision-making process as it considers entering the growing market for actively managed exchange-traded funds (ETFs). Set in 2024, the case places students in the position of Rodney Comegys, Vanguard’s global head of the Equity... View Details
      Keywords: Asset Management; Financial Strategy; Investment Funds; Investment Portfolio; Financial Services Industry
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      Sammon, Marco, Luis M. Viceira, and Jonathan Kanagasabai. "Index and Active Investing: Vanguard and the New Frontier of Active ETFs." Harvard Business School Case 225-056, January 2025.
      • January 2025
      • Technical Note

      Technical Note on Mutual Funds and Exchange Traded Funds (ETFs)

      By: Marco Sammon, Luis M. Viceira and Jonathan Kanagasabai
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      Sammon, Marco, Luis M. Viceira, and Jonathan Kanagasabai. "Technical Note on Mutual Funds and Exchange Traded Funds (ETFs)." Harvard Business School Technical Note 225-057, January 2025.
      • 2024
      • Working Paper

      Priceless: How to Create, Trade, and Protect What Matters Most

      By: Debora L. Spar
      This article explores the concept of the "sacred economy," a realm of human interactions and exchanges that transcends traditional market dynamics. It illustrates the emotional and relational aspects of human connections that cannot be quantified or traded like... View Details
      Keywords: Valuation; Relationships; Human Needs; Goods and Commodities
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      Spar, Debora L. "Priceless: How to Create, Trade, and Protect What Matters Most." Harvard Business School Working Paper, No. 25-028, November 2024.
      • November 2024
      • Teaching Note

      Mercado Bitcoin: M&A, IPO, or Series B?

      By: Raymond Kluender, Emanuele Colonnelli and Sabrina Howell
      Teaching Note for HBS Case No. 825-047. In April 2021, Brazilian cryptocurrency platform Mercado Bitcoin, had to decide how to scale: go public, M&A with a bank, or take a VC big check. In a highly volatile market, Roberto Dagnoni, chairman of the board, viewed the... View Details
      Keywords: Cryptocurrency; Mergers and Acquisitions; Business Growth and Maturation; Business Startups; Decision Making; Going Public; Ownership Stake; Strategic Planning; Venture Capital; Problems and Challenges; Business Cycles; Digital Platforms; Emerging Markets; Market Timing; Expansion; Diversification; Valuation; Value Creation; Investment Funds; Initial Public Offering; Price; Price Bubble; Negotiation Offer; Information Technology Industry; Financial Services Industry; Brazil; Latin America
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      Kluender, Raymond, Emanuele Colonnelli, and Sabrina Howell. "Mercado Bitcoin: M&A, IPO, or Series B?" Harvard Business School Teaching Note 825-092, November 2024.
      • 2024
      • Working Paper

      How Do Global Portfolio Investors Hedge Currency Risk?

      By: Robin Greenwood and Alex Cheema-Fox
      We use monthly portfolio data from one of the world’s largest custodian banks, with over $40 trillion assets under custody, to study how global portfolio investors hedge foreign exchange risk in their equity and fixed income portfolios over the past 25 years. The data... View Details
      Keywords: Investment Portfolio; Investment Funds; Currency; Risk and Uncertainty
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      Greenwood, Robin, and Alex Cheema-Fox. "How Do Global Portfolio Investors Hedge Currency Risk?" Working Paper, October 2024.
      • October 2024
      • Teaching Note

      El Salvador: Launching Bitcoin as Legal Tender

      By: Laura Alfaro
      Teaching Note for HBS Case No. 322-055. In June 2021, Nayib Bukele, El Salvador’s president, surprised the world with the announcement that the country would adopt bitcoin as legal tender, becoming the first nation to do so. Bitcoin was mostly used for trading and had... View Details
      Keywords: Bitcoin; Cryptocurrency; Currency; Financial Strategy; Economic Growth; Governance; Macroeconomics; Assets; Government Administration; Latin America; El Salvador
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      Alfaro, Laura. "El Salvador: Launching Bitcoin as Legal Tender." Harvard Business School Teaching Note 325-005, October 2024.
      • 2024
      • Working Paper

      Ponzi Funds

      By: Philippe van der Beck, Jean-Philippe Bouchaud and Dario Villamaina
      Many active funds hold concentrated portfolios. Flow-driven trading causes price pressure, which pushes up the funds’ existing positions resulting in realized returns. We decompose fund returns into a price pressure (self-inflated) and a fundamental component and... View Details
      Keywords: Investment Funds; Investment Portfolio; Investment Return; Price Bubble; Financial Reporting; Financial Liquidity
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      van der Beck, Philippe, Jean-Philippe Bouchaud, and Dario Villamaina. "Ponzi Funds." Working Paper, May 2024.
      • August 2024 (Revised November 2024)
      • Case

      Mercado Bitcoin: M&A, IPO, or Series B?

      By: Raymond Kluender, Emanuele Colonnelli, Sabrina T. Howell and Karina Souza
      In April 2021, Brazilian cryptocurrency platform Mercado Bitcoin had to decide how to scale: go public, M&A with a bank, or take a VC big check. In a highly volatile market, Roberto Dagnoni, chairman of the board, viewed the unprecedent crypto momentum as a window of... View Details
      Keywords: Cryptocurrency; Mergers and Acquisitions; Business Growth and Maturation; Business Startups; Decision Making; Going Public; Ownership Stake; Strategic Planning; Venture Capital; Problems and Challenges; Business Cycles; Digital Platforms; Emerging Markets; Market Timing; Expansion; Diversification; Valuation; Value Creation; Investment Funds; Initial Public Offering; Price; Price Bubble; Negotiation Offer; Financial Liquidity; Information Technology Industry; Financial Services Industry; Latin America; South America; Brazil; Sao Paulo; United States
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      Kluender, Raymond, Emanuele Colonnelli, Sabrina T. Howell, and Karina Souza. "Mercado Bitcoin: M&A, IPO, or Series B?" Harvard Business School Case 825-047, August 2024. (Revised November 2024.)
      • 2024
      • Working Paper

      Who Clears the Market When Passive Investors Trade?

      By: Marco Sammon and John J. Shim
      We find that firms are the primary sellers of shares when index funds are net buyers, providing shares at a nearly one-for-one rate. Rather than provide liquidity, most demand-side institutions trade in the same direction as index funds, especially over long horizons.... View Details
      Keywords: Investment Funds; Institutional Investing; Price; Investment Portfolio; Financial Institutions; Financial Instruments
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      Sammon, Marco, and John J. Shim. "Who Clears the Market When Passive Investors Trade?" Working Paper, August 2024.
      • July 2024
      • Article

      The Passive-Ownership Share Is Double What You Think It Is

      By: Alex Chinco and Marco Sammon
      Each time a stock gets added to or dropped from a benchmark index, we ask: “How much money would have to be tracking that index to explain the huge spike in rebalancing volume we observe on reconstitution day?” While index funds held 16% of the US stock market in 2021,... View Details
      Keywords: Indexing; Passive Investing; Exchange-traded Funds (ETFs); Russell Reconstitution Day; Trading Volume; Information-based Asset Pricing; Investment Funds; Asset Pricing
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      Chinco, Alex, and Marco Sammon. "The Passive-Ownership Share Is Double What You Think It Is." Journal of Financial Economics 157 (July 2024).
      • June 2024 (Revised March 2025)
      • Case

      Wemade: (Re)Establishing Trust in Blockchain Games (A)

      By: Jung Koo Kang, Charles C.Y. Wang, David Allen and Kwangmoon So
      This case explores the fundamental challenges and accounting issues arising from the integration of blockchain technology into traditional business models. It features Wemade, a South Korean online gaming company that has staked its future on blockchain-based games.... View Details
      Keywords: Blockchain; Cryptocurrency; Video Games; Accounting; Financial Reporting; Revenue Recognition; Games, Gaming, and Gambling; Corporate Disclosure; Information Technology; Technology Adoption; Accounting Industry; Information Technology Industry; Video Game Industry; South Korea
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      Kang, Jung Koo, Charles C.Y. Wang, David Allen, and Kwangmoon So. "Wemade: (Re)Establishing Trust in Blockchain Games (A)." Harvard Business School Case 124-025, June 2024. (Revised March 2025.)
      • March 2024
      • Case

      Funderbeam: Teaming Up or Going Alone?

      By: Paul A. Gompers, Elena Corsi and Orna Dan
      Funderbeam, a global platform founded in Estonia to enable start-ups to run private syndications and secondaries while offering liquidity for private equity investors, was at a crossroads. Over its ten-year run, the company had expanded its services and areas of... View Details
      Keywords: Decision Making; Business Exit or Shutdown; Transition; Leading Change; Business or Company Management; Organizational Change and Adaptation; Law; Mergers and Acquisitions; Financing and Loans; Cross-Cultural and Cross-Border Issues; Ownership Stake; Expansion; Business Startups; Venture Capital; Financial Services Industry; Estonia; Republic of Ireland; United Kingdom; Singapore
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      Gompers, Paul A., Elena Corsi, and Orna Dan. "Funderbeam: Teaming Up or Going Alone?" Harvard Business School Case 224-076, March 2024.
      • March 2024 (Revised May 2024)
      • Case

      Masterpiece for the Masses: The First Art Exchange ARTEX

      By: Lauren Cohen, Anastasiya Siroochenko (Siro) and Sophia Pan
      Yassir Benjelloun-Touimi, CEO of ARTEX, aspired to marry the world of art and finance. Hoping to promote transparent, fractionalized ownership of renowned artwork, the founder had spent years contemplating the birth of an art stock market. This exchange would allow... View Details
      Keywords: Trading; Art Market; Art Fair; Tokenization; Democratization; Exchange Traded Fund; Price Monitoring; Trends And Opportunities; Financial Liquidity; Financial Markets; Arts; Financial Strategy; Initial Public Offering; Investment Return; Technological Innovation; Business Model; Trends; Stocks; Assets; Diversification; Trade; Financial Services Industry; Fine Arts Industry; Paris; France
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      Cohen, Lauren, Anastasiya Siroochenko (Siro), and Sophia Pan. "Masterpiece for the Masses: The First Art Exchange ARTEX." Harvard Business School Case 224-086, March 2024. (Revised May 2024.)
      • 2024
      • Article

      Half the Firms, Double the Profits: Public Firms' Transformation, 1996–2022

      By: Mark J. Roe and Charles C.Y. Wang
      The number of public firms in the United States has halved since the beginning of the twenty-first century, causing consternation among corporate and securities law regulators. The dominant explanations, often advanced by Securities and Exchange commissioners when... View Details
      Keywords: Corporate Law; Securities Regulation; Sarbanes-Oxley Act; Concentration Levels; Antitrust; Initial Public Offering; Public Ownership; Private Equity; Venture Capital; Mergers and Acquisitions; Monopoly; United States
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      Roe, Mark J., and Charles C.Y. Wang. "Half the Firms, Double the Profits: Public Firms' Transformation, 1996–2022." Journal of Law, Finance, and Accounting 8, no. 2 (2024): 211–264.
      • February 2024 (Revised April 2024)
      • Case

      Uniswap: Fighting a Vampire Attack (A)

      By: Shikhar Ghosh, Shweta Bagai and Liang Wu
      This is the first of a three-case series that explores the challenges faced by Uniswap, a key player in the decentralized finance (DeFi) sector. Founded by Hayden Adams, the case traces Uniswap's rapid growth from a simple idea inspired by a Reddit post to becoming one... View Details
      Keywords: Blockchain; Cryptocurrency; Crypto Economy; Community; Decentralization; Decentralized Exchange; Decentralized Finance; Open Platforms; Open-source Innovation; Market Distruption; Stablecoin; Vampire Attack; Web3; Token; Digital Platforms; Entrepreneurship; Governance; Technological Innovation; Competitive Strategy; Financial Liquidity; Financial Services Industry; Technology Industry; United States
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      Ghosh, Shikhar, Shweta Bagai, and Liang Wu. "Uniswap: Fighting a Vampire Attack (A)." Harvard Business School Case 824-162, February 2024. (Revised April 2024.)
      • 2023
      • Working Paper

      Money, Time, and Grant Design

      By: Kyle Myers and Wei Yang Tham
      The design of research grants has been hypothesized to be a useful tool for influencing researchers and their science. We test this by conducting two thought experiments in a nationally representative survey of academic researchers. First, we offer participants a... View Details
      Keywords: Research; Power and Influence; Money
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      Myers, Kyle, and Wei Yang Tham. "Money, Time, and Grant Design." Harvard Business School Working Paper, No. 24-037, December 2023.
      • November–December 2023
      • Article

      Tax-Loss Harvesting with Cryptocurrencies

      By: Lin William Cong, Wayne Landsman, Edward Maydew and Daniel Rabetti
      We describe the taxation landscape in the cryptocurrency markets, especially concerning U.S. taxpayers, and examine how recent increases in tax scrutiny have led to changes in crypto investors' trading behavior. We argue conceptually and then empirically document that... View Details
      Keywords: Cryptocurrency; Taxation; Governing Rules, Regulations, and Reforms; Financial Markets
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      Cong, Lin William, Wayne Landsman, Edward Maydew, and Daniel Rabetti. "Tax-Loss Harvesting with Cryptocurrencies." Art. 101607. Journal of Accounting & Economics 76, nos. 2-3 (November–December 2023).
      • 2023
      • Working Paper

      Do Active Funds Do Better in What They Trade?

      By: Marco Sammon and John J. Shim
      We develop two new, simple measures to quantify active fund decisions at the individual position level. The intuition is to separate passive rebalancing induced by flows and position changes from active rebalancing decisions. We find that additive active rebalancing --... View Details
      Keywords: Investment Funds; Financial Management
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      Sammon, Marco, and John J. Shim. "Do Active Funds Do Better in What They Trade?" Working Paper, November 2023.
      • October 2023
      • Case

      Kevin O'Leary: Building a Brand in Shark-infested Waters

      By: Reza Satchu and Patrick Sanguineti
      For more than fifteen years, successful Canadian entrepreneur and investor Kevin O’Leary had developed his brand into a global powerhouse. Since his first appearance on the Canadian television program Dragons’ Den in 2006 and his meteoric rise to stardom through the... View Details
      Keywords: Personal Brand; Crisis; Brands and Branding; Entrepreneurship; Crisis Management; Social Media; Public Opinion; Power and Influence; Financial Services Industry
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      Satchu, Reza, and Patrick Sanguineti. "Kevin O'Leary: Building a Brand in Shark-infested Waters." Harvard Business School Case 824-095, October 2023.
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