FEEM working papers "Note di lavoro" series
2011 .100

Why do Firms Hold Oil Stockpiles?


Authors: Charles F. Mason
Series: Energy: Resources and Markets
Editor: Giuseppe Sammarco
Keywords: Petroleum Economics, Stochastic Dynamic Optimization
JEL n.: Q2, D8, L15

Abstract

Persistent and significant privately-held stockpiles of crude oil have long been an important empirical regularity in the United States. Such stockpiles would not rationally be held in a traditional Hotelling-style model. How then can the existence of these inventories be explained? In the presence of sufficiently stochastic prices, oil extracting firms have an incentive to hold inventories to smooth production over time. An alternative explanation is related to a speculative motive - firms hold stockpiles intending to cash in on periods of particularly high prices. I argue that empirical evidence supports the former but not the latter explanation.

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