Document de travail

Illiquidity and All Its Friends

Jean Tirole

Résumé

The recent crisis was characterized by massive illiquidity. This paper reviews what we know and don't know about illiquidity and all its friends: market freezes, fire sales, contagion, and ultimately insolvencies and bailouts. It first explains why liquidity cannot easily be apprehended through a single statistics, and asks whether liquidity should be regulated given that a capital adequacy requirement is already in place. The paper then analyzes market breakdowns due to either adverse selection or shortages of financial muscle, and explains why such breakdowns are endogenous to balance sheet choices and to information acquisition. It then looks at what economics can contribute to the debate on systemic risk and its containment. Finally, the paper takes a macroeconomic perspective, discusses shortages of aggregate liquidity and analyses how market value accounting and capital adequacy should react to asset prices. It concludes with a topical form of liquidity provision, monetary bailouts and recapitalizations, and analyses optimal combinations thereof; it stresses the need for macroprudential policies.

Codes JEL

  • E44: Financial Markets and the Macroeconomy
  • E52: Monetary Policy
  • G28: Government Policy and Regulation

Remplacé par

Jean Tirole, « Illiquidity and All Its Friends », Journal of Economic Literature, vol. 49, n° 2, juin 2011, p. 287–325.

Référence

Jean Tirole, « Illiquidity and All Its Friends », TSE Working Paper, n° 09-083, 12 septembre 2009, révision février 2010, 42 pages.

Voir aussi

Publié dans

TSE Working Paper, n° 09-083, 12 septembre 2009, révision février 2010, 42 pages