IAQF-Thalesians Seminar (New York) — Dr. Lingjiong Zhu — A reduced-form model for level-1 limit order books
Thursday, March 16, 2017:
NYU Kimmel Center, Room 914, Kimmel Center, 60 Washington Square South, NY 10012, NY
One popular approach to model limit order book dynamics of the best bid and ask at level-1 is to use reduced-form diffusion approximations. It is well known that the biggest contributing factor to the price movement is the imbalance of the best bid and ask. We investigate the data of the level-1 limit order books of a basket of stocks and study the numerical evidence of drift, correlation, volatility and their dependence on the imbalance. Based on the numerical discoveries, we develop a nonparametric discrete model for the dynamics of the best bid and ask. This model can be approximated by a reduced-form model with analytical tractability that can fit the empirical data of correlation, volatilities and probability of price movement simultaneously.
(Joint work with Tzu-Wei Yang)
Lingjiong Zhu grew up in Shanghai and went to study in England, where he got BA from University of Cambridge in 2008. He then moved to the United States and received PhD from New York University in 2013. After a stint at Morgan Stanley, he went to work at the University of Minnesota as the Dunham Jackson Assistant Professor before joining the faculty at Florida State University as an Assistant Professor in 2015. In his spare time, he enjoys reading, traveling, and going to art exhibitions, museums and classical music concerts.
The IAQF-Thalesians Seminar Series is a joint effort on the part of the IAQF (formerly IAFE) and the Thalesians. The goal of the series is to provide a forum for the exchange of new ideas and results related to the field of quantitative finance. This goal is accomplished by hosting seminars where leading practitioners and academics present new work, and following the seminars with a reception to facilitate further interaction and discussion. The seminar series is limited to IAQF and Thalesians members only.
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