Intraday Market Making with Overnight Inventory Costs
Journal of Financial Markets, Forthcoming
65 Pages Posted: 29 Sep 2016 Last revised: 13 Apr 2020
Date Written: April 12, 2020
The U.S. Treasury market is highly intermediated by non-bank principal trading firms (PTFs). Limited capital forces PTFs to end the trading day nearly flat. We construct a continuous time market making model to analyze the trade-off faced by a profit maximizing firm with overnight inventory costs, and develop closed-form representations of the optimal price policy functions. Our model reveals that bid-ask spreads widen as the end of the trading day approaches, and that increases in order arrival rates do not always lead to higher price volatility. Our empirical analysis shows that Treasury security trading costs increase as the close of trading approaches, consistent with model predictions.
Keywords: inventory control, jump-driven stochastic control, market microstructure theory, market making
JEL Classification: G12, G17, G01
Suggested Citation: Suggested Citation