A proposal for impact-adjusted valuation: Critical leverage and execution risk
The practice of valuation by marking-to-market with current trading prices is seriously flawed. Under leverage the problem is particularly dramatic: due to the concave form of market impact, selling always initially causes the expected leverage to increase. There is a critical leverage above which it is impossible to exit a portfolio without leverage going to infinity and bankruptcy becoming likely. Standard risk-management methods give no warning of this problem, which easily occurs for aggressively leveraged positions in illiquid markets. We propose an alternative accounting procedure based on the estimated market impact of liquidation that removes the illusion of profit. This should curb the leverage cycle and contribute to an enhanced stability of financial markets.
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Xavier Gabaix & Parameswaran Gopikrishnan & Vasiliki Plerou & H. Eugene Stanley, 2005.
"Institutional Investors and Stock Market Volatility,"
NBER Working Papers
11722, National Bureau of Economic Research, Inc.
- Xavier Gabaix & Parameswaran Gopikrishnan & Vasiliki Plerou & H. Eugene Stanley, 2006. "Institutional Investors and Stock Market Volatility," The Quarterly Journal of Economics, MIT Press, vol. 121(2), pages 461-504, May.
- Carlo Acerbi & Giacomo Scandolo, 2008. "Liquidity risk theory and coherent measures of risk," Quantitative Finance, Taylor & Francis Journals, vol. 8(7), pages 681-692.
- Fabio Caccioli & Susanne Still & Matteo Marsili & Imre Kondor, 2013.
"Optimal liquidation strategies regularize portfolio selection,"
The European Journal of Finance,
Taylor & Francis Journals, vol. 19(6), pages 554-571, July.
- Fabio Caccioli & Susanne Still & Matteo Marsili & Imre Kondor, 2010. "Optimal Liquidation Strategies Regularize Portfolio Selection," Papers 1004.4169, arXiv.org, revised Feb 2011.
- J. Doyne Farmer & Austin Gerig & Fabrizio Lillo & Henri Waelbroeck, 2011. "How efficiency shapes market impact," Papers 1102.5457, arXiv.org, revised Sep 2013.
When requesting a correction, please mention this item's handle: RePEc:arx:papers:1204.0922. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (arXiv administrators)
If references are entirely missing, you can add them using this form.