The Simple Economics of Commodity Price Speculation

Christopher Knittel and Robert Pindyck

No 18951, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: The price of crude oil in the U.S. never exceeded $40 per barrel until mid-2004. By 2006 it reached $70, and in July 2008 it peaked at $145. By late 2008 it had plummeted to about $30 before increasing to $110 in 2011. Are speculators at least partly to blame for these sharp price changes? We clarify the effects of speculators on commodity prices. We focus on crude oil, but our approach can be applied to other commodities. We explain the meaning of "oil price speculation," how it can occur, and how it relates to investments in oil reserves, inventories, or derivatives (such as futures contracts). Turning to the data, we calculate counterfactual prices that would have occurred from 1999 to 2012 in the absence of speculation. Our framework is based on a simple and transparent model of supply and demand in the cash and storage markets for a commodity. It lets us determine whether speculation is consistent with data on production, consumption, inventory changes, and convenience yields given reasonable elasticity assumptions. We show speculation had little, if any, effect on prices and volatility.

JEL-codes: G13 L71 Q40 (search for similar items in EconPapers)
Date: 2013-04
New Economics Papers: this item is included in nep-agr and nep-ene
Note: AP EEE EFG IO
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Citations: View citations in EconPapers (38)

Published as Christopher R. Knittel & Robert S. Pindyck, 2016. "The Simple Economics of Commodity Price Speculation," American Economic Journal: Macroeconomics, American Economic Association, vol. 8(2), pages 85-110, April.

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