Determination of Strategic Spreads in East Asia

ABSTRACT This study develops a simple spread model to explain whether market dealers behave strategically when using electronic broking services. Our spread model stresses the role of an unexpected liquidity imbalance and its volatility for inventory risk, which contrasts sharply with previous studies that emphasised price volatility as the inventory risk. To capture a dealer’s strategic behaviour, we introduce a new concept of a strategic weighted spread and test this new spread using the full information maximum likelihood method with the GARCH (1,1) process. Daily spread data from 1 January 2006 to 20 December 2016 is used to explore strategic spreading at the end of a trading day in East Asia. Different effects on strategic spreads of liquidity depth in Asian financial markets are also investigated by comparing strategic spreads between the thin and deep markets. The evidence provides support for our hypothesis that a dealer behaves strategically to avoid the unexpected inventory risk, and that the magnitude of this influence depends on the depth of the financial market.