This paper studies portfolio choice and pricing in markets in which immediate trading may be impossible. It departs from the literature by removing restrictions on asset holdings, and finds that optimal positions depend significantly and naturally on liquidity: When expected future liquidity is high, agents take more extreme positions, given that they do not have to hold those positions for lon...

This paper looks into how the liquidity of Hong Kong stock market has evolved since the Asian financial crisis, and examines the determinants of changes in liquidity. Various conventional liquidity indicators are constructed for the study period from 1997 to June 2001, and they show that, having deteriorated during the Asian financial crisis and the Russia crisis, market liquidity has mostly re...

Automated market makers are algorithmic agents that provide liquidity in electronic markets. A recent stream of research in automated market making is the design of liquidity-sensitive automated market makers, which are able to adjust their price response to the level of active interest in the market. In this paper, we introduce homogeneous risk measures, the general class of liquidity-sensitiv...

In this paper, we use the recent collapse of the ARS market as a case study on important issues regarding fragility of financial innovations and systemic risks. We find strong evidence of investor runs for liquidity, partly caused by a self-fulfilling panic. In addition, coordination failures triggered by an unexpected first mover led all major broker-dealers to simultaneously withdraw their li...

This article illustrates the impact of both spot and option liquidity levels on option prices. Using implied volatility to measure the option price structure, our empirical results reveal that even after controlling for the systematic risk of Duan and Wei (2009), a clear link remains between option prices and liquidity; with a reduction (increase) in spot (option) liquidity, there is a correspo...

markowitz, in his portfolio selection theory, stated that investors select their portfolios according to two criteria of risk and return. accordingly, he presented his mathematical model. one of the criticisms of this model is that while investors, practically, consider different criteria in forming their portfolios, it only considers the return mean and return standard deviation. liquidity is ...