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Do Gasoline Mergers Affect Consumer Prices? The Marathon Ashland Petroleum and Ultramar Diamond Shamrock Transaction

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  • John Simpson
  • Christopher Taylor

Abstract

In 1999, Marathon Ashland Petroleum (MAP) acquired the Michigan assets of Ultramar Diamond Shamrock (UDS), which increased MAP's share of terminal storage in Michigan from about 16 percent to about 25 percent and increased the share of gasoline stations bearing a MAP brand from about 16 percent to about 24 percent. In this paper, we examine whether this acquisition affected the retail price of gasoline. We use a difference-in-differences model to compare price movements in six Michigan cities affected by the acquisition with price movements in two nearby cities unaffected by the acquisition. Using this model, we find no evidence that this acquisition led to higher prices for consumers. .

Suggested Citation

  • John Simpson & Christopher Taylor, 2008. "Do Gasoline Mergers Affect Consumer Prices? The Marathon Ashland Petroleum and Ultramar Diamond Shamrock Transaction," Journal of Law and Economics, University of Chicago Press, vol. 51(1), pages 135-152, February.
    • Handle: RePEc:ucp:jlawec:v:51:y:2008:i:1:p:135-152
    DOI: 10.1086/520004
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    References listed on IDEAS

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    1. Justine S. Hastings, 2004. "Vertical Relationships and Competition in Retail Gasoline Markets: Empirical Evidence from Contract Changes in Southern California," American Economic Review, American Economic Association, vol. 94(1), pages 317-328, March.
    2. Chouinard, Hayley & Perloff, Jeffrey M., 2004. "Incidence of federal and state gasoline taxes," Economics Letters, Elsevier, vol. 83(1), pages 55-60, April.
    3. Severin Boreinstein & Andrea Shepard, 1996. "Dynamic Pricing in Retail Gasoline Markets," RAND Journal of Economics, The RAND Corporation, vol. 27(3), pages 429-451, Autumn.
    4. Kim, E Han & Singal, Vijay, 1993. "Mergers and Market Power: Evidence from the Airline Industry," American Economic Review, American Economic Association, vol. 83(3), pages 549-569, June.
    5. Joris Pinkse & Margaret E. Slade & Craig Brett, 2002. "Spatial Price Competition: A Semiparametric Approach," Econometrica, Econometric Society, vol. 70(3), pages 1111-1153, May.
    6. Christopher T. Taylor & Daniel S. Hosken, 2007. "The Economic Effects Of The Marathon‐Ashland Joint Venture: The Importance Of Industry Supply Shocks And Vertical Market Structure," Journal of Industrial Economics, Wiley Blackwell, vol. 55(3), pages 419-451, September.
    7. Justine S. Hastings & Richard J. Gilbert, 2005. "Market Power, Vertical Integration And The Wholesale Price Of Gasoline," Journal of Industrial Economics, Wiley Blackwell, vol. 53(4), pages 469-492, December.
    8. Schumann, Laurence & Reitzes, James D & Rogers, Robert P, 1997. "In the Matter of Weyerhaeuser Company: The Use of a Hold-Separate Order in a Merger with Horizontal and Vertical Effects," Journal of Regulatory Economics, Springer, vol. 11(3), pages 271-289, May.
    9. Jeremy I. Bulow & Jeffrey H. Fischer & Jay S. Creswell, Jr. & Christopher T. Taylor, 2003. "U.S. Midwest Gasoline Pricing and the Spring 2000 Price Spike," The Energy Journal, International Association for Energy Economics, vol. 0(Number 3), pages 121-149.
    10. Barton, David M & Sherman, Roger, 1984. "The Price and Profit Effects of Horizontal Merger: A Case Study," Journal of Industrial Economics, Wiley Blackwell, vol. 33(2), pages 165-177, December.
    11. Margaret E. Slade, 1992. "Vancouver's Gasoline-Price Wars: An Empirical Exercise in Uncovering Supergame Strategies," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 59(2), pages 257-276.
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