Mathematical Finance & Financial Data Science Seminar
Excess out-of-sample risk, fleeting modes and Random Matrix Theory
Speaker: Jean-Philippe Bouchaud, Capital Fund Management
Location: Online Zoom access provided to registrants
Date: Tuesday, April 25, 2023, 5:30 p.m.
Using Random Matrix Theory, we propose a universal and versatile tools to reveal, quantify and characterize non-stationarity effects in the correlation structure of large asset universes. We discuss in particular the existence of “fleeting modes”, i.e. portfolios that carry statistically significant excess risk, signalling ex-post a change in the correlation structure in the underlying asset space. Our proposed tests are, somewhat miraculously, independent of the “true” (but unknown) underlying correlation structure.
Jean-Philippe Bouchaud is co-founder, chairman and chief scientist of Capital Fund Management and adjunct Professor at Ecole Normale Supérieure. Jean-Philippe Bouchaud has received numerous national and international honours: He is elected as member of the French Academy of Sciences. In 2020 he held the Bettencourt Innovation Chair at Collège de France. In 2017 he was named Quant of the Year by Risk Magazine.
This event is free, but requires registration. You will then receive the Zoom link by email about a day or so before the event.
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