Sara Fisher Ellison: The MIT Economist Behind a High-Profile Family Case

Sara Fisher Ellison has long been recognized as a distinguished member of the MIT Department of Economics, where she serves as a senior lecturer. Her career has been defined by rigorous academic research and meaningful contributions to economic theory. However, in recent years, her professional reputation has been intertwined with a family matter that captured national attention: her daughter Caroline Ellison’s involvement in the FTX-Alameda fraud scandal.

A Career Built on Economic Innovation

Sara Fisher Ellison’s research portfolio reflects a deep commitment to understanding modern market dynamics. Her scholarly work concentrates primarily on two areas: e-commerce and the pharmaceutical industry. In the pharmaceutical sector, she has examined the intricate relationships between supply and demand, helping policymakers and industry stakeholders understand market mechanisms. Her e-commerce research has been particularly influential, exploring how internet technologies reshape market competition and pricing structures—insights that have become increasingly relevant in today’s digital economy.

Her husband, Glenn Ellison, holds the position of professor at the same institution and previously served two terms as Head of the Department. His research interests span game theory, industrial organization, education, finance, and economic geography. Glenn has also authored the “Hard Math” series, bringing economic concepts to younger audiences through educational textbooks.

Witnessing Family and Public Trial

In September 2024, Sara Fisher Ellison and her family faced an unexpected public ordeal when Caroline Ellison received a two-year federal prison sentence for her role in the FTX collapse. The case had already drawn significant media attention when Caroline testified as a key witness against Sam Bankman-Fried, FTX’s founder. Judge Lewis Kaplan’s sentencing decision proved more severe than the defense had hoped—despite her lawyers’ requests for no prison time and prosecutors’ recommendations for leniency based on her cooperation, the two-year sentence was handed down.

Sara Fisher Ellison and her family attended the proceedings, witnessing the sentencing from the courthouse. One concession from the judge was granting Caroline’s request to serve her time at a facility near Boston, allowing her to remain closer to her family. As of March 2026, Caroline became eligible for parole, meaning she will have served the required minimum portion of her sentence.

Academic Partnership and Shared Intellectual Pursuits

What distinguishes Sara Fisher Ellison’s career is not only her individual research contributions but also her collaborative work with Glenn. The two economists have occasionally co-authored academic papers that combine their diverse expertise. Their 2005 paper, “Lessons About Markets From the Internet,” examined how digital platforms were transforming traditional economic relationships. Nearly a decade later, they published “Search and Obfuscation in a Technologically Changing Retail Environment,” which delved into consumer behavior in online shopping environments.

Most recently, Sara Fisher Ellison and Glenn explored the impact of home-sharing platforms like Airbnb through an economic lens. Their analysis suggested that such platforms could enhance overall social welfare by enabling more intensive property utilization, though they also raised concerns about potential effects on primary housing availability—a nuanced perspective that reflects the complexity economists must navigate when evaluating technology’s role in society.

Navigating Public Attention

Despite being photographed occasionally since Caroline’s legal troubles emerged, Sara Fisher Ellison and Glenn have largely maintained privacy, declining media inquiries and public commentary. This measured approach reflects their focus on academic work rather than public relations. Their scholarly contributions continue to influence how economists understand market dynamics, competitive behavior, and technological disruption—legacies that extend well beyond the headlines surrounding their family.