Discussion Papers of Business and Economics
Department of Business and Economics, University of Southern Denmark
A Leverage-Based Measure of Financial Instability
() and Karol Jan Borowiecki
Abstract: We employ a model of leverage-induced explosive behavior
in financial markets to develop a measure of financial market instability.
Specifically, we derive a quantitative condition for how large levered
investors can become relative to the whole market before the demand curve
for securities suddenly becomes upward-sloping and small price declines
cascade as levered investors are forced to liquidate. The size and leverage
of all levered investors and the elasticity of demand of unlevered
investors define the minimum market size for stability (or MinMaSS), the
smallest market size that can support a given group of levered investors.
The ratio of actual market size to MinMaSS is termed the instability ratio,
and can give regulators and policymakers advance warning of financial
crises. We apply the instability ratio in an investigation of the 1998
demise of the hedge fund Long-Term Capital Management. We find that a
forced liquidation of the fund threatened to destabilize some financial
markets, particularly for bank funding and equity volatility.
Keywords: Leverage; financial crisis; financial stability; minimum market size for stability (MinMass); instability ratio; Long-Term Capital Management (LTCM); (follow links to similar papers)
JEL-Codes: E58; G01; G10; G20; G21; (follow links to similar papers)
41 pages, August 26, 2014
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