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- 2025
- Article
Difference-in-Differences Subset Scan
By: Will Stamey, Sriram Somanchi and Edward McFowland III
Difference-in-differences (DiD) has been extensively applied in the literature to elicit the average causal effect of an intervention or policy. Though researchers explore heterogeneity in the treatment effect with respect to time or some observed covariate (usually... View Details
- Article
Faith and Assimilation: Italian Immigrants in the U.S.
By: Stefano Gagliarducci and Marco Tabellini
How do ethnic religious organizations influence immigrant assimilation? To answer this question, we assemble novel data from the Catholic directories to measure the presence of Italian Catholic churches in the US between 1890 and 1920, when four million Italians moved... View Details
- July 2025
- Teaching Note
Designed for Purpose: “Never a Failure. Always a Lesson”
By: James Riley and Andrea Dorbu
In 2017, Rihanna launched Fenty Beauty under LVMH, disrupting the cosmetics industry with an inclusive 'Beauty for All' strategy that emphasized accessibility across skin tones. The brand’s success was followed by the launch of Savage X Fenty, a lingerie line upholding... View Details
- July 2025
- Case
Designed for Purpose: “Never a Failure. Always a Lesson”
By: James Riley and Andrea Dorbu
In 2017, Rihanna launched Fenty Beauty under LVMH, disrupting the cosmetics industry with an inclusive 'Beauty for All' strategy that emphasized accessibility across skin tones. The brand’s success was followed by the launch of Savage X Fenty, a lingerie line upholding... View Details
- July 3, 2025
- Article
A New Framework for Reducing Healthcare Disparities
By: Susanna Gallani, Mary Lynch Witkowski, Lidia M. V. R. Moura and Katie Sonnefeldt
Despite decades of initiatives to address healthcare inequities in the U.S., disparities across race, gender, geography, and income remain stubbornly persistent. This article introduces the Strategic Fingerprint Framework for Health Equity, a practical, principle-based... View Details
- July 2025
- Article
No Free Lunch? Welfare Analysis of Firms Selling Through Expert Intermediaries
By: Matt Grennan, Kyle R. Myers, Ashley Swanson and Aaron Chatterji
We study how firms target and influence expert intermediaries. In our context, pharmaceutical manufacturers provide payments to physicians during promotional interactions. We develop an identification strategy based on plausibly exogenous variation in payments driven... View Details
- July 2025
- Case
The Future in Sight: LumineticsCore and the First Autonomous AI for Diagnostics
By: Michael Lingzhi Li and Tinglong Dai
After two decades of research, Dr. Michael Abramoff successfully launched LumineticsCore—the first autonomous AI system authorized by the FDA to diagnose diabetic retinopathy without physician oversight. The case traces his journey across algorithm design, clinical... View Details
- June 2025
- Case
Zerodha
By: Das Narayandas and Kairavi Dey
Zerodha Broking Pvt. Ltd. (Zerodha) was among India's largest online broking platforms. Nithin and Nikhil Kamath started Zerodha to empower retail investors and remove the hurdles to investing in stocks. The company pioneered tech-first discount broking, charging... View Details
Keywords: Financial Services Industry
- May 2025
- Article
Punitive but Discerning: Reputation Can Fuel Ambiguously-Deserved Punishment, but Does Not Erode Sensitivity to Nuance
By: Jillian J. Jordan and Nour S. Kteily
The desire to appear virtuous can motivate people to punish wrongdoers, a desirable outcome when punishment is clearly deserved. Yet claims that “virtue signaling” is fueling a culture of outrage suggest that reputation concerns may inspire even potentially unmerited... View Details
- June 2025 (Revised July 2025)
- Case
Full-Funnel Advertising on TikTok
By: Jeremy Yang, Ayelet Israeli and Alexis Lefort
In 2025 TikTok is working to grow its brand and performance advertising business, along with a new integrated full-funnel solution. As an emerging media platform with unique ad formats and user behavior in a privacy-first environment, TikTok faces both significant... View Details
- June 4, 2025
- Editorial
Employee Stress Is a Business Risk—Not an HR Problem
By: Marion Chomse, Lydia Roos, Reeva Misra and Ashley Whillans
Workplace stress, on the rise for decades, has been treated by many organizations as a personal issue instead of a business-critical risk that merits executive oversight. This is likely due in part to the fact that companies have not effectively quantified and tracked... View Details
- June 2025
- Article
Outcome and Process Frames: Strategic Renewal and Capability Reprioritization at the Federal Bureau of Investigation
[Research Summary]: Framing is critical for leaders who must build support for strategic renewal. While research has concentrated on renewal that replaces one set of capabilities with another, we explore a distinctive challenge: how leaders persuade stakeholders to... View Details
- May 2025
- Case
IQanat: Empowering Rural Youth in Kazakhstan
By: Boris Groysberg and Maxim Pike Harrell
In June 2025, IQanat CEO Aliya Salikova considered scaling opportunities for the foundation, which provided educational opportunities for children from rural regions of Kazakhstan. Established by Kazakhstani businessman and philanthropist Aidyn Rakhimbayev, IQanat... View Details
- May 2025
- Case
Dell Med: Transforming Care Delivery & Payment
By: Robert S. Kaplan, David N. Bernstein and Mary L. Witkowski
Health care in the U.S. and globally continues to undergo massive transformation, surging towards a system that rewards value for patients. However, widespread adoption of value-based health care remains a challenge. This case study focuses on the care delivery... View Details
- May 2025
- Teaching Note
The VideaHealth AI Factory: CEO Florian Hillen on Speed, Scale, and Innovation
By: Tsedal Neeley
Teaching Note for HBS Case No. 425-720. Florian Hillen, co-founder and CEO of VideaHealth, a startup using artificial intelligence (AI) to detect dental conditions on x-rays, spent the early years of his company laying the groundwork for an AI factory. This AI factory,... View Details
- 2024
- Case
EPCorp: Convincing the C-Suite
By: Jacob M. Cook
In EPCorp: Convincing the C-Suite, Shivani Bahl is attempting to sell EPCorp's CEO, Debbie Sullivan, on her ideas for not only a new website upgrade but also a more expansive vision on how data and Generative AI can be used to grow the company. Debbie is understandably... View Details
- 2025
- Working Paper
Healthcare Provider Bankruptcies
By: Samuel Antill, Ashvin Gandhi, Jessica Bai and Adrienne Sabety
Healthcare firms are filing for Chapter 11 bankruptcy at record rates. We find that bankruptcies increase healthcare staff turnover, worsen care, and harm patients. Using a difference-in-differences design, we estimate that a bankruptcy filing immediately increases... View Details
- May 2025
- Article
The Effects of Medical Debt Relief: Evidence from Two Randomized Experiments
By: Raymond Kluender, Neale Mahoney, Francis Wong and Wesley Yin
Two in five Americans have medical debt, nearly half of whom owe at least $2,500. Concerned by this burden, governments and private donors have undertaken large, high-profile efforts to relieve medical debt. We partnered with RIP Medical Debt (now Undue Medical Debt)... View Details
- April 2025
- Case
Netflix in 2024
By: Jan Rivkin and David Allen
In 2024, Netflix appeared to emerge victorious from the “streaming wars” that it had waged in recent years with the likes of Disney, Warner Bros. Discovery, Apple, and Amazon. What had allowed Netflix not only to succeed in the streaming wars but also to thrive for... View Details
- April 2025
- Article
Serving with a Smile on Airbnb: Analyzing the Economic Returns and Behavioral Underpinnings of the Host’s Smile
By: Shunyuan Zhang, Elizabeth Friedman, Kannan Srinivasan, Ravi Dhar and Xupin Zhang
Non-informational cues, such as facial expressions, can significantly influence judgments and interpersonal impressions. While past research has explored how smiling affects business outcomes in offline or in-store contexts, relatively less is known about how smiling... View Details