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Publications
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- April 2025
- Case
Breezm: Innovative 3D-Printed Eyewear (A)
By: Juan Alcácer, Brian Mao Fu and Adina Wong
In 2023, Breezm, a South Korean startup, faced a strategic decision about how to grow its innovative 3D-printed, custom-fit eyewear business. Co-founded in 2017 by Zenma Park and Wooseok Sung, Breezm combined facial scanning, AI, and in-house production to solve the... View Details
- February 2025 (Revised May 2025)
- Case
Align Partners and SM Entertainment: Korean Shareholder Activism Meets K-Pop (A)
By: Charles CY Wang and Billy Chan
For years, institutional investors had experienced very limited success in influencing the management of listed companies through shareholder activist campaigns in Korea. The common practice of circular ownership and public resentment toward foreign shareholder... View Details
- February 2025
- Supplement
Align Partners and SM Entertainment: Korean Shareholder Activism Meets K-Pop (B)
By: Charles CY Wang and Billy Chan
For years, institutional investors had experienced very limited success in influencing the management of listed companies through shareholder activist campaigns in Korea. The common practice of circular ownership and public resentment toward foreign shareholder... View Details
- February 2025
- Case
Doing Business in Kigali, Rwanda
By: Andy Zelleke, Martin A. Sinozich, Julianne Bliss and Choetsow Tenzin
Rwanda’s transformation from a post-genocide recovery effort to one of Africa’s fastest-growing economies presents a compelling case for investors and business leaders. With an ambitious Vision 2050 strategy, Kigali has emerged as a regional hub for trade, innovation,... View Details
- 2025
- Working Paper
Dynamic Personalization with Multiple Customer Signals: Multi-Response State Representation in Reinforcement Learning
Reinforcement learning (RL) offers potential for optimizing sequences of customer interactions by modeling the relationships
between customer states, company actions, and long-term value. However, its practical implementation often faces significant
challenges.... View Details
- January 2025
- Case
Arsenal Capital Partners' Refinancing of Pinnacle
By: Victoria Ivashina and Srimayi Mylavarapu
Arsenal Capital Partners’ portfolio company, Pinnacle, a leading producer of high-performance adhesive technologies, has experienced rapid growth under Arsenal’s ownership. Over just two years, Pinnacle's EBITDA increased from $13.5 million to $60 million. By mid-2021,... View Details
- January 2025 (Revised April 2025)
- Case
Doing Business in Cairo: Navigating a Path to Economic Resilience
By: A. Zelleke and Ahmed Dahawy
Egypt has long been a pivotal force in the Middle East and North Africa. Located at a crossroads of global trade routes, the country was a strategic partner for numerous regional and global powers. However, a substantial currency devaluation in 2016 brought many... View Details
Keywords: Egypt; Economy; Business; Country; Developing Countries and Economies; Economic Slowdown and Stagnation; Inflation and Deflation; Macroeconomics; Cross-Cultural and Cross-Border Issues; Globalized Economies and Regions; International Relations; Emerging Markets; Risk and Uncertainty; Culture; Egypt
- November 2024 (Revised December 2024)
- Case
Moonfare and the Democratization of Private Equity
By: Victoria Ivashina and Srimayi Mylavarapu
Founded in 2016, Moonfare headquartered in Europe, was a pioneer in the “democratization” of private equity investments. Historically, private equity was accessible only to institutional investors like pension funds, endowments, sovereign wealth funds, and large family... View Details
- 2024
- Article
Political Polarization and Finance
By: Elisabeth Kempf and Margarita Tsoutsoura
We review an empirical literature that studies how political polarization affects financial decisions. We first discuss the degree of partisan segregation in finance and corporate America, the mechanisms through which partisanship may influence financial decisions, and... View Details
- 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
- 2024
- Working Paper
Igniting Innovation: Evidence from PyTorch on Technology Control in Open Collaboration
By: Daniel Yue and Frank Nagle
Many companies offer free access to their technology to encourage outside addon
innovation, hoping to later profit by raising prices or harnessing the power of the crowd
while continuing to steer the direction of innovation. They can achieve this balance by
opening... View Details
- 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
- 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
- January 2024
- Technical Note
Hedging Currency Risk of Foreign Investments
By: Wenxin Du and Luis M. Viceira
- January 2024
- Article
Fencing Off Silicon Valley: Cross-Border Venture Capital and Technology Spillovers
By: Ufuk Akcigit, Sina T. Ates, Josh Lerner, Richard Townsend and Yulia Zhestkova
The treatment of foreign investors is a contentious topic in U.S. entrepreneurship policy. We
model a setting where foreign corporate investments in Silicon Valley may allow U.S. entrepreneurs to pursue technologies that they could not otherwise, but may also lead to... View Details
- November 2023 (Revised July 2024)
- Case
'Care in Every Drop': Ayala Corporation and Manila Water (A)
By: Debora L. Spar, Paul Healy, Tricia Peralta and Julia M. Comeau
Since 1834, eight generations of the Ayala family have used their conglomerate to fund nation-building projects in the Philippines, including investments in tramcars, telecommunications, hospitals, and schools. In 1997, Ayala’s subsidiary, Manila Water, took control of... View Details
- November 2023
- Supplement
'Care in Every Drop': Ayala Corporation and Manila Water (B)
By: Debora L. Spar, Paul Healy, Tricia Peralta and Julia Comeau
Since 1834, eight generations of the Ayala family have used their conglomerate to fund nation-building projects in the Philippines, including investments in tramcars, telecommunications, hospitals, and schools. In 1997, Ayala’s subsidiary, Manila Water, took control of... View Details
- October 2023
- Case
Shredder Setups or Straightlining into Risk?: Investing in What You Love
By: Lauren Cohen and Grace Headinger
Bob Hall, President of Green Gables Partners, evaluated whether to angel invest into an up-and-coming ski brand. As the son-in-law of the founder of Vera Bradley and having retired from a lengthy career on Wall Street, Hall was well-versed in both direct investing and... View Details
Keywords: Family Office; Angel Investors; Direct Investment; Family Business; Business Growth and Maturation; Small Business; Financial Strategy; Personal Finance; Investment Portfolio; Private Equity; Decision Choices and Conditions; Risk and Uncertainty; Consumer Products Industry; Montana; United States
- October 2023 (Revised January 2024)
- Case
SEK: Reimagining Spanish Higher Education at Universidad Camilo José Cela (UCJC)
By: John J-H Kim, Mary C. Sauer and Emilie Billaud
In 2023, Nieves Segovia, President of the SEK Education Group in Spain, contemplates the future of her family's for-profit education company, which includes K-12 schools and the newly established UCJC university. Renowned for its innovation in education, SEK faces... View Details
- 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