References (24)



How Oil Moves Stock Prices

Kim R. Sawyer

University of Melbourne - School of Historical and Philosophical Studies

Mohan Nandha

Monash University - Department of Accounting

June 20, 2006

An important question in asset markets is whether oil prices are a global factor in asset returns. In this paper, we propose a hierarchical model of stock returns which assumes that markets are integrated conditional on a set of factors, including oil. The hierarchical model is a variant of the Jorion and Schwarz model of market integration and permits significance testing of factors at three levels; global, country and sector.

In an application to three countries across nine common sectors, we found the pattern of significance of oil was different than for six other commodities. While there is no evidence that oil is a global or country factor, there is evidence that oil is more significant at the sector level than other commodities. The average P-values for oil are less than for other commodities and, in Wald tests across sectors, oil behaves like a global market factor and a country market factor. The effect of oil is therefore both disaggregated and heterogeneous.

There are two important implications of this study. First, in the aggregate, stock prices appear remarkably insensitive to oil prices, suggesting that the correlation between stock prices and oil prices is less certain than usually perceived. While an oil shock may cause a real economy recession, it does not necessarily cause an asset economy recession. A second implication relates to the testing of linear factor models. If factors affect asset prices in a hierarchy rather than linearly, tests of factor models must adjust for the hierarchical structure.

Number of Pages in PDF File: 29

Keywords: Oil, integration, global risk factors, hierarchical model

JEL Classification: C22, F3, Q49

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Date posted: June 28, 2006  

Suggested Citation

Sawyer, Kim R. and Nandha, Mohan, How Oil Moves Stock Prices (June 20, 2006). Available at SSRN: http://ssrn.com/abstract=910427 or http://dx.doi.org/10.2139/ssrn.910427

Contact Information

Kim Russell Sawyer (Contact Author)
University of Melbourne - School of Historical and Philosophical Studies ( email )
Mohan Nandha
Monash University - Department of Accounting ( email )
Peninsula Campus, Building D
Frankston, Victoria 3199
613 9904 4610 (Phone)
613 9904 4145 (Fax)
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