Xavier Gabaix

Xavier Gabaix (born August 1971) is a French economist, currently the Pershing Square Professor of Economics and Finance at Harvard University. He has been listed among the top 8 young economists in the world by The Economist.[2] He holds a B.A. in Mathematics from the Ecole Normale Supérieure, as well as a Ph.D. in Economics from Harvard University.

Xavier Gabaix
BornAugust 1971 (age 52)
NationalityFrench
Academic career
InstitutionHarvard University
New York University
MIT
FieldMacroeconomics
Alma materHarvard University
Ecole Normale Supérieure
Paris School of Economics[1]
Doctoral
advisor		Robert Barro
Information at IDEAS / RePEc

Gabaix mostly researches asset pricing, behavioral economics, and macroeconomics. He has many notable and highly original research contributions on a number of subjects in financial economics, including the level of compensation of corporate executives, and behaviorally influenced decision making and its influence on asset market behaviour. In some of his work, he has made use of axiom-based models of the shapes of the tails of probability distributions. A hallmark of Professor Gabaix's research style is his propensity to take unexpected directions.[3] He previously held a position as Associate Professor of Economics at the Massachusetts Institute of Technology.

Bounded Rationality

Gabaix continues to work on bounded rationality. His paper A Behavioral New Keynesian Model was called "the most interesting macroeconomic theory paper in years" by Bloomberg View in an article titled Answering The Hardest Question In Economics. The article goes on to suggest that the work "heralds a sea change in the way macroeconomic theory gets done."

Inelastic Markets Hypothesis

Gabaix, along with Ralph Koijen, the AQR Capital Management Distinguished Service Professor of Finance and Fama Faculty Fellow at the University of Chicago, demonstrates that markets are not “elastic”, as textbooks say they should be.

According to The Economist, "The paper will surprise the typical economist, who, according to the authors’ surveys, believes that flows do not affect prices. It also threatens associated financial theories. One is the Modigliani-Miller theorem, which says that it does not matter whether a company finances itself with equity or with debt. In inelastic markets, by contrast, a firm that issues debt to buy back its stock will find that it drives up both its own share price and the broader market."[4]

Recognition

Gabaix was awarded the American Finance Association Fischer Black Prize, 2011. The award is given to a young researcher whose body of work "best exemplifies the Fischer Black hallmark of developing original research that is relevant to finance."[5] He was the winner of the 2010 Bernacer Prize to the best European economist under 40 working in macro-finance for his original research contributions in financial and behavioral economics, including the consequences of seemingly irrational behavior on asset markets, and his analysis of the level of compensation of corporate executives.[6] In 2011, he was awarded the Prix du meilleur jeune économiste de France, a prize awarded yearly to a French economist under forty years of age "who has combined recognized expertise with active participation in public debate". In 2012, he was one of the recipients of the Lagrange Prize for research on complex systems, together with Lada Adamic, a specialist in social networks analysis.[7]

References
  1. "Paris School of Economics Xavier Gabaix". Retrieved 2019-06-30.
  2. "International bright young things", The Economist, December 30, 2008
  3. "2011 Fischer Black Prize". PR.com. Retrieved 2020-04-04.
  4. "A new theory suggests that day-to-day trading has lasting effects on stockmarkets". The Economist. 2021-08-14. ISSN 0013-0613. Retrieved 2021-08-13.
  5. "- American Finance Association". www.afajof.org. Archived from the original on 2014-01-04.
  6. admin3er38. "Xavier Gabaix | Bernacer Prize -" (in European Spanish). Retrieved 2020-04-04.
  7. "Premio Lagrange 2012 a Lada Adamici e Xavier Gabaix" (in Italian). Fondazione CRT. 28 June 2012. Archived from the original on April 2, 2013.
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