Cathy O’Neil
Cathy O’Neil is a mathematician and author whose books examine how algorithmic systems affect people’s lives. She earned a mathematics PhD at Harvard, worked as a postdoc at MIT, and taught at Barnard before moving from finance into data science. She wrote Doing Data Science, Weapons of Math Destruction, and The Shame Machine, launched Columbia’s Lede Program, and founded ORCAA to audit algorithms. As of October 2026, she is CEO of ORCAA.
Timeline
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By 2007
Mathematics at Barnard
She earns a mathematics PhD from Harvard, works as a postdoc in MIT’s mathematics department, and teaches at Barnard, where she publishes research in arithmetic algebraic geometry. She leaves academia in 2007.
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2007–2011
Finance into data science
She works as a quant at D.E. Shaw and RiskMetrics. In 2011, she leaves finance to become a data scientist in New York’s start-up scene.
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2012–2014
Consulting and data journalism
She begins independent data-science consulting in 2012. She writes Doing Data Science in 2013 and launches Columbia’s Lede Program in Data Journalism in 2014.
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2016
Founding ORCAA
In 2016, she founds ORCAA, an algorithmic auditing consultancy that aims to set good standards and protect people from harm.
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2016–2019
Weapons of Math Destruction
In 2016, she publishes Weapons of Math Destruction, about algorithmic models that score teachers, sort résumés, evaluate workers, set parole, and monitor health. The book reaches the National Book Award nonfiction longlist in 2016 and wins the Euler Book Prize in 2019.
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2022
The Shame Machine
In 2022, she publishes The Shame Machine, which examines how industries and social media exploit shame for commercial purposes.
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April 2025
ORCAA and Harvard’s tech lab
In April 2025, she is CEO of ORCAA and a member of the Public Interest Tech Lab at the Harvard Kennedy School.
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As of October 2026
CEO of ORCAA
As of October 2026, she is CEO of ORCAA.
Career
- Since 2016ORCAAFounder, CEO
- From 2025Harvard Kennedy SchoolMember
- Until 2007Barnard College
- 2007–2011D. E. ShawQuant
- 2007–2011RiskMetricsQuant
- Massachusetts Institute of TechnologyPostdoc
Education
- Harvard UniversityPhD in Mathematics
Most-cited works
Sources and credits
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- Cathy O'Neil - Data-Pop Alliance
- Cathy O'Neil - Wikipedia
- ORCAA
- OCEAN
- Weapons of Math Destruction: How Big Data Increases Inequality and Threatens Democracy - National Book Foundation
- Euler Book Prize - Wikipedia
- Cathy O’Neil: ‘Big tech makes use of shame to profit from our interactions’ | Psychology | The Guardian
- Cathy O’Neil - mesh