IDEAS home Printed from https://ideas.repec.org/a/ucp/jlawec/v51y2008i1p135-152.html
   My bibliography  Save this article

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

Author

Listed:
  • 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
    as

    Download full text from publisher

    File URL: http://dx.doi.org/10.1086/520004
    File Function: link to full text
    Download Restriction: Access to full text is restricted to subscribers.
    File URL: https://libkey.io/10.1086/520004?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. 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.
    2. 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.
    3. 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.
    4. 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.
    5. Chouinard, Hayley & Perloff, Jeffrey M., 2004. "Incidence of federal and state gasoline taxes," Economics Letters, Elsevier, vol. 83(1), pages 55-60, April.
    6. 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.
    7. 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.
    8. 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.
    9. Joris Pinkse & Margaret E. Slade & Craig Brett, 2002. "Spatial Price Competition: A Semiparametric Approach," Econometrica, Econometric Society, vol. 70(3), pages 1111-1153, May.
    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.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Orley C. Ashenfelter & Daniel Hosken & Matthew Weinberg, 2009. "Generating Evidence to Guide Merger Enforcement," Working Papers 1137, Princeton University, Department of Economics, Center for Economic Policy Studies..
    2. Orley Ashenfelter & Daniel Hosken & Matthew Weinberg, 2014. "Did Robert Bork Understate the Competitive Impact of Mergers? Evidence from Consummated Mergers," Journal of Law and Economics, University of Chicago Press, vol. 57(S3), pages 67-100.
    3. Orley Ashenfelter & Daniel Hosken & Matthew Weinberg, 2009. "Generating Evidence to Guide Merger Enforcement," CPI Journal, Competition Policy International, vol. 5.
    4. Juan Luis Jiménez & Jordi Perdiguero, 2018. "Mergers and difference-in-difference estimator: Why firms do not increase prices?," European Journal of Law and Economics, Springer, vol. 45(2), pages 285-311, April.
    5. Orley Ashenfelter & Daniel Hosken, 2010. "The Effect of Mergers on Consumer Prices: Evidence from Five Mergers on the Enforcement Margin," Journal of Law and Economics, University of Chicago Press, vol. 53(3), pages 417-466.
    6. Skidmore, Mark & Peltier, James & Alm, James, 2005. "Do state motor fuel sales-below-cost laws lower prices?," Journal of Urban Economics, Elsevier, vol. 57(1), pages 189-211, January.
    7. Orley Ashenfelter & Daniel Hosken, 2008. "The Effect of Mergers on Consumer Prices: Evidence from Five Selected Case Studies," NBER Working Papers 13859, National Bureau of Economic Research, Inc.
    8. Philippe Choné & Laurent Linnemer, 2012. "A Treatment Effect Method for Merger Analysis with an Application to Parking Prices in P aris," Journal of Industrial Economics, Wiley Blackwell, vol. 60(4), pages 631-656, December.
    9. Orley C. Ashenfelter & Daniel S. Hosken & Matthew C. Weinberg, 2015. "Efficiencies brewed: pricing and consolidation in the US beer industry," RAND Journal of Economics, RAND Corporation, vol. 46(2), pages 328-361, June.
    10. Orley Ashenfelter & Daniel Hosken, 2008. "The Effect of Mergers on Consumer Prices: Evidence from Five Selected Case Studies," NBER Working Papers 13859, National Bureau of Economic Research, Inc.
    11. repec:pri:cepsud:160ashenfelter is not listed on IDEAS
    12. Anindya Sen & Peter G.C. Townley, 2010. "Estimating the Impacts of Outlet Rationalization on Retail Prices, Industry Concentration, and Sales: Empirical Evidence from Canadian Gasoline Markets," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 19(3), pages 605-633, September.
    13. repec:pri:cepsud:183ashenfelter is not listed on IDEAS
    14. Packalen, Mikko & Sen, Anindya, 2013. "Static and dynamic merger effects: A market share based empirical analysis," International Review of Law and Economics, Elsevier, vol. 36(C), pages 12-24.
    15. Kaplow, Louis & Shapiro, Carl, 2007. "Antitrust," Handbook of Law and Economics, in: A. Mitchell Polinsky & Steven Shavell (ed.), Handbook of Law and Economics, edition 1, volume 2, chapter 15, pages 1073-1225, Elsevier.
    16. Christos Genakos & Andreas Lamprinidis & James Walker, 2023. "Evaluating merger effects," CEP Discussion Papers dp1921, Centre for Economic Performance, LSE.
    17. Shanjun Li & Joshua Linn & Erich Muehlegger, 2014. "Gasoline Taxes and Consumer Behavior," American Economic Journal: Economic Policy, American Economic Association, vol. 6(4), pages 302-342, November.
    18. Ariane Charpin & Joanna Piechucka, 2020. "Merger Efficiency Gains: Evidence from a Large Transport Merger in France," Discussion Papers of DIW Berlin 1843, DIW Berlin, German Institute for Economic Research.
    19. Marie-Laure Allain & Claire Chambolle & Stéphane Turolla & Sofia Villas-Boas, 2013. "The Impact of Retail Mergers on Food Prices: Evidence from France," Working Papers hal-00920460, HAL.
    20. Kendix, Michael & Walls, W.D., 2010. "Oil industry consolidation and refined product prices: Evidence from US wholesale gasoline terminals," Energy Policy, Elsevier, vol. 38(7), pages 3498-3507, July.
    21. Benjamin Atkinson & Andrew Eckert & Douglas S. West, 2009. "Price Matching And The Domino Effect In A Retail Gasoline Market," Economic Inquiry, Western Economic Association International, vol. 47(3), pages 568-588, July.
    22. Ivaldi, Marc & Zhang, Jiekai, 2020. "Platform Mergers: Lessons from a Case in the Digital TV Market," CEPR Discussion Papers 14895, C.E.P.R. Discussion Papers.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ucp:jlawec:v:51:y:2008:i:1:p:135-152. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Journals Division (email available below). General contact details of provider: https://www.journals.uchicago.edu/JLE .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.