Default (or credit) risk is a central difference between forward and futures markets. Empirical tests have found little difference between forwards and futures prices, but these tests have been conducted on markets where such risk is minimal (e.g., foreign exchange), so that even if default risk is in general an important difference between forward and futures trading, they would have been unable to detect its effects. In contrast, this paper presents a case study of a market, for forward delivery of a type of crude oil from the North Sea, that experienced widespread and well-documented defaults when the spot price of the underlying commodity plunged from roughly $30 to roughly $10 per barrel in a short period of time in early 1986. The defaults were by relatively small, lightly-capitalized trading companies, firms that neither produce nor consume the physical commodity. Because information on defaults in financial markets is scarce, the paper describes the circumstances surrounding the default episode in some detail. The market survived the default episode with market microstructure unaltered, and still flourishes, despite the successful introduction of a futures market in the same commodity by the (London) International Petroleum Exchange. Patterns of trade changed, however. The paper examines the hypothesis that investment banks, which entered the market following the default period, provided intermediation services to market participants, thereby substituting to an extent for a clearinghouse. Taking advantage of the information on the buyer and seller in each transaction, the paper presents nonparametric tests for changing patterns of forward trade.
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