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Newsletter
Interest-only mortgages and speculation in hot housing markets
Even as housing markets have temporarily shut down across the U.S. during the Covid-19 pandemic, housing remains a key sector that contributes disproportionately to fluctuations in overall economic activity and that will likely play an important role as the economy reopens. Interest in this market among research economists and policymakers intensified after the exceptional boom and bust in housing between 2003 and 2008. In this Chicago Fed Letter, we describe research in Barlevy and Fisher (2020)1 that examined patterns in the kinds of mortgages homebuyers took out in different cities during ...
Journal Article
Exchange rate changes and net positions of speculators in the futures market
Traders, strategists, and other participants in the currency markets continuously seek to understand and interpret short-term exchange rate movements. One data set frequently used in those efforts is a weekly report of net futures market positions held by speculators on the Chicago Mercantile Exchange. In this article, the authors pursue a transaction-oriented line of research to track short-term exchange rate moves. They examine the data set for six currencies over a ten-year period and document a strong contemporaneous relationship between weekly changes in speculators' net positions and ...
Working Paper
A leverage-based model of speculative bubbles
This paper develops an equilibrium model of speculative bubbles that can be used to explore the role of various policies in either giving rise to or eliminating the possibility of asset bubbles, e.g. restricting the use of certain types of loan contracts, imposing down- payment restrictions, and changing inter-bank rates. As in previous work by Allen and Gorton (1993) and Allen and Gale (2000), a bubble arises in the model because traders are assumed to purchase assets with borrowed funds. My model adds to this literature by allowing creditors and traders to enter into a more general class of ...
Working Paper
Speculative bubbles and financial crisis
Why are asset prices so much more volatile and so often detached from their fundamentals? Why does the burst of financial bubbles depress the real economy? This paper addresses these questions by constructing an infinite-horizon heterogeneous-agent general-equilibrium model with speculative bubbles. We show that agents are willing to invest in asset bubbles even though they have positive probability to burst. We prove that any storable goods, regardless of their intrinsic values, may give birth to bubbles with market prices far exceeding their fundamental values. We also show that perceived ...
Working Paper
Speculation in the oil market
The run-up in oil prices after 2004 coincided with a growing flow of investment to commodity markets and an increased price comovement between different commodities. We analyze whether speculation in the oil market played a key role in driving this salient empirical pattern. We identify oil shocks from a large dataset using a factor-augmented autoregressive (FAVAR) model. We analyze the role of speculation in comparison to supply and demand forces as drivers of oil prices. The main results are as follows: (i) While global demand shocks account for the largest share of oil price fluctuations, ...
Briefing
How Speculation Affects the Market and Outcome-Based Values of Innovation
nnovation booms often coincide with speculative bubbles. Using data on over 1 million patents, we document two ways in which speculation creates a disconnect between the market valuation of innovation and its actual economic impact. First, an innovation during bubbles raises the stock price of its creator by 40 percent more than is justified by future outcomes. Next, competitors' stock prices move little during bubbles despite their profits suffering. We present a theory of investor disagreement about which firms will succeed that reconciles both facts. Policymakers should account for the ...
Journal Article
Speculation in the oil market
Disentangling the true drivers of oil prices is a critical first step for allocating resources and designing good policy.
Journal Article
October postmortem
Working Paper
On the fiscal implications of twin crises
This paper explores the implications of different strategies for financing the fiscal cost of twin crises for inflation and depreciation rates. We use a first-generation type model of speculative attacks which has four key features: (i) the crisis is triggered by prospective deficits, (ii) there exists outstanding non-indexed government debt issued prior to the crises; (iii) a portion of the government's liabilities are not indexed to inflation; and (iv) there are nontradable goods and costs of distributing tradable goods, so that purchasing power parity does not hold. We show that the model ...