Research Topics

The Anatomy of a Pure Price-Chasing Bubble

It is widely agreed that the Nasdaq during the dot-com era 20 years ago was a full-fledged stock market bubble. Recently, the US stock market according to many metrics has become significantly more speculative and overvalued than it was at the dot-com peak 20 years ago. In both instances, a very broad subset of stocks became so highly valued that speculation in them had to be untethered from all fundamentals: the essence of what we call a “pure price-chasing bubble.”
 
This paper, drawn from a book in progress, examines the history of stock markets for comparable pure price-chasing bubbles, finding nine or so which have ever reached such a speculative extreme, with an over-the-counter market in Kuwait in the early 1980s called the “Souk al-Manakh” representing the most extreme example. Based on personal exposure to this Souk al-Manakh almost 40 years ago, we describe this anatomy and thereby make transparent the recurrent dynamics—on the way up and on the way down—of these greatest asset bubbles in human history. When one applies this framework to the current US stock market, one sees that the stock market in the US today will likely follow the disastrous path of the dot-com market.

On the Nature and Outcomes of the Beauty Contest

Since the 2008 crisis, the economics literature has shown a renewed interest in Keynes’s “beauty contest” (BC) as a fundamental aspect of the functioning of financial markets. We argue that to understand the importance of the BC, psychological and informational factors are of small importance, and a dynamic-structural approach should be followed instead: the BC framework is paramount because it is rooted in the historical trajectory of capitalism and it is not simply a consequence of “irrational” (i.e., biased) agents. In this genuine form, the BC mechanism allows one to understand the main trends of a financialized world. Moreover, the conventional nature of financial markets provides a sound method for assessing different economic policies whose effectiveness depends on how much they can influence the convention itself. This alternative understanding of the BC can be used to start the needed rethinking of economics, urged by the crisis, that is for now reduced to studying the financial and psychological “imperfections” of the market.

This paper provides a theoretical explanation of the accumulation process, which accounts for the developments in the financial markets over the recent past. Specifically, our approach is focused on the presence of correlations between physical and financial investment, and how the latter could affect the former. In order to achieve this objective, two assets are considered: equities and bonds. This choice permits us to account for two extreme alternative possibilities: taking risk in the short run with unknown profits, or undertaking a commitment to the long run with known yields. This proposal also accounts for the influence of the cost of external finance and the impact of financial uncertainty, as proxied by the interest rate in the former case and the exchange rate in the latter case; thereby utilizing the Keynesian notion of conventions in the determination of investment. The model thus formulated is subsequently estimated by applying the difference GMM and the system GMM in a panel of 14 OECD countries from 1970 to 2010.