Optimal placement of a small order in a diffusive limit order book

Jos\'e E. Figueroa-L\'opez, Hyoeun Lee and Raghu Pasupathy

Papers from arXiv.org

Abstract: We study the optimal placement problem of a stock trader who wishes to clear his/her inventory by a predetermined time horizon t, by using a limit order or a market order. For a diffusive market, we characterize the optimal limit order placement policy and analyze its behavior under different market conditions. In particular, we show that, in the presence of a negative drift, there exists a critical time t0>0 such that, for any time horizon t>t0, there exists an optimal placement, which, contrary to earlier work, is different from one that is placed "infinitesimally" close to the best ask, such as the best bid and second best bid. We also propose a simple method to approximate the critical time t0 and the optimal order placement.

Date: 2017-08
New Economics Papers: this item is included in nep-mst
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