Speculative Bubbles Speculative Attacks And Policy Switching

The papers in this book are grouped into three sections: the first on price bubbles is primarily financial; the second on speculative attacks (on exchange rate regimes) is international in scope; and the third, on policy switching, is concerned with monetary policy.

The recent theory of exchange rate dynamics within a target zone holds that exchange rates under a currency bard are less responsive to fundamental shocks than exchange rates under a free float, provided that the intervention rules of the Central Bank(s) are common knowledge. These results are derived after having assumed a priori that excess volatility due to rational bubbles does not occur in the foreign exchange market. In this paper we consider instead a setup in which the existence of speculative behavior is a datum the Central Bank has to deal with. We show that the defense of the target zone in the presence of bubbles is viable if the Central Bank accommodates speculative attacks when the latter are consistent with the survival of the target zone itself and expectations are self-fulfilling. These results hold for a large class of exogenous and fundamental-dependent bubble processes. We show that the instantaneous volatility of exchange rates within a bard is not necessarily less than the volatility under free float and analyze the implications for interest rate differential dynamics.

In the aftermath of the global financial crisis, the issue of how best to identify speculative asset bubbles (in real-time) remains in flux. This owes to the difficulty of disentangling irrational investor exuberance from the rational response to lower risk based on price behavior alone. In response, I introduce a two-pillar (price and quantity) approach for financial market surveillance. The intuition is straightforward: while asset pricing models comprise a valuable component of the surveillance toolkit, risk taking behavior, and financial vulnerabilities more generally, can also be reflected in subtler, non-price terms. The framework appears to capture stylized facts of asset booms and busts—some of the largest in history have been associated with below average risk premia (captured by the ‘pricing pillar’) and unusually elevated patterns of issuance, trading volumes, fund flows, and survey-based return projections (reflected in the ‘quantities pillar’). Based on a comparison to past boom-bust episodes, the approach is signaling mounting vulnerabilities in risky U.S. credit markets. Policy makers and regulators should be attune to any further deterioration in issuance quality, and where possible, take steps to ensure the post-crisis financial infrastructure is braced to accommodate a re-pricing in credit risk.

The Housing Bubble was hardly the first in human history. What's eluded historians is the same issue that eludes commentators today: the underlying cause of bubbles. This book is the first (and only) book to solve the mystery of the most famous bubble in world history: Tulipmania in 17th century Netherlands. It Is a legendary event but explanations have been lacking. People blame irrational exuberance, free markets, and an unleashed aristocracy. Douglas French takes a different route: he follows the money to prove that the bubble resulted from a government intervention that dramatically exploded the money supply and fueled the tulip-price bubble – not altogether different from modern bubbles. This book was French’s Master’s thesis written under the direction of Murray Rothbard and examining three of the most famous speculative bubble episodes in history through the lens of Austrian Business Cycle Theory. Although each of these episodes is well documented, this book examines the monetary interventions that engendered each of these events showing that not only the Mississippi Bubble and the South Sea Bubble were caused by government meddling, but Tulipmania was as well. Tulipmania was unique in that it was the sound money policy of the Dutch combined with free coinage laws that led to an acute increase in the supply of money and fostered an atmosphere that was ripe for speculation and malinvestment, manifesting itself in the intense trading of tulip bulbs. The author examines not only the Mississippi Bubble but also the life and monetary theories of its architect, John Law. Professor Joe Salerno calls Law the world’s first macroeconomist who implemented a Keynesian monetary system in France nearly two hundred years before Keynes was born. At the same time across the English Channel, a nearly bankrupt British government looked on with envy at Law’s system, believing that he was working a financial miracle. It was anything but this and investors in both countries were devastated. Although these episodes occurred centuries ago, readers will find the events eerily similar to today’s bubbles and busts: low interest rates, easy credit terms, widespread public participation, bankrupt governments, price inflation, frantic attempts by government to keep the booms going, and government bailouts of companies after the crash. When will we learn? We first have to get cause and effect in history straight. This book is an excellent contribution to that effort.

Currency crises in Europe and Mexico, as well as those unfolding in Asia, have renewed efforts to understand and control the forces underlying speculative attacks on fixed exchange rates. Until the European crises in 1992-93, there was general agreement about the underlying cause of speculative attacks. A country would ultimately face an attack if it ran macroeconomic policies inconsistent in the longer term with the fixed exchange rate. For example, if a government monetized a large fiscal deficit, excessive money growth would cause its international reserve holdings to decline and eventually trigger an attack by speculators. The government would be forced to abandon the fixed exchange rate and let the currency depreciate. The view that deteriorating fundamentals led to currency crises was formalized in a set of "first-generation" crisis models.1

This book contains the proceedings of a conference held in honor of Robert P. Flood Jr. Contributors to the conference were invited to address many of the topics that Robert Flood has explored including regime switching, speculative attacks, bubbles, stock market voloatility, macro models with nominal rigidities, dual exchange rates, target zones, and rules versus discretion in monetary policy. The results, contained in this volume, include five papers on topics in international finance.

Economists broadly define financial asset price bubbles as episodes in which prices rise with notable rapidity and depart from historically established asset valuation multiples and relationships. Financial economists have for decades attempted to study and interpret bubbles through the prisms of rational expectations, efficient markets, and equilibrium, arbitrage, and capital asset pricing models, but they have not made much if any progress toward a consistent and reliable theory that explains how and why bubbles (and crashes) evolve and can also be defined, measured, and compared. This book develops a new and different approach that is based on the central notion that bubbles and crashes reflect urgent short-side rationing, which means that, as such extreme conditions unfold, considerations of quantities owned or not owned begin to displace considerations of price.