Why and how to integrate liquidity risk into a VaR-framework

Arbeitspapier

We integrate liquidity risk measured by the weighted spread into a Value-at-Risk (VaR) framework. The weighted spread measure extracts liquidity costs by order size from the limit order book. We show that it is precise from a risk perspective in a wide range of clearly defined situations. Using a unique, representative data set provided by Deutsche Boerse AG, we find liquidity risk to increase traditionally-measured price risk by over 25%, even at standard 10-day horizons and for liquid DAX stocks. We also show that the common approach of simply adding liquidity risk to price risk substantially overestimates total risk because correlation between liquidity and price is neglected. Our results are robust with respect to changes in risk measure, to sample periods and to effects of portfolio diversification.

Object Details

• Language: Englisch

References and Relationships

• Bibliographic citation: Series: Working Paper ; No. 2008-10

Classification and Topics

• Classification: Wirtschaft ; Portfolio Choice; Investment Decisions ; Asset Pricing; Trading Volume; Bond Interest Rates ; General Financial Markets: Government Policy and Regulation ; Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
• Subject: asset liquidity ; price impact ; weighted spread ; Xetra Liquidity Measure (XLM) ; Value-at-Risk ; market liquidity risk ; Wertpapierhandel ; Börsenkurs ; Risikomaß ; Marktrisiko

Contributors, Places and Time

• Event: Geistige Schöpfung
• (who): Stange, Sebastian ; Kaserer, Christoph
• Event: Veröffentlichung
• (who): Technische Universität München, Center for Entrepreneurial and Financial Studies (CEFS)
• (where): München
• (when): 2008

Further information

• Handle: http://hdl.handle.net/10419/48441
• Last update: 10.03.2025, 11:42 AM CET