Journal of Financial Services Research

, Volume 3, Issue 2–3, pp 211–246 | Cite as

Price volatility, international market links, and their implications for regulatory policies

  • Richard Roll


The October 1987 stock market crash spawned an abundance of research papers, as scholars attempted to explain what seemed at the time, and to some extent remains, an inexplicable event.

Except for the period immediately around the crash, there is only meager evidence that international linkages across markets have become tighter over time. Yet the crash was worldwide in scope, and its similarity across countries was uncanny. Just on the face, this international similarity puts doubt to such explanations as particular macroeconomic events in one country, failure of a given country's market system, or simultaneous changes in underlying fundamentals (which were quite different across countries).

Assigning the origination of the crash to one country cannot be entirely ruled out, however, because of the possibility of a non-fully revealing equilibrium “contagion” process of the type suggested by King and Wadhwani (1988). Such a process would allow a world-wide crash to begin by a particular news event or even by a market “mistake” in one country. Evidence in favor of this process is that international correlations of returns increased dramatically during the crash period. However, this increase is consistent with other explanations, such as transaction costs hindering international arbitrage except during periods of high volatility.

Was the crash the bursting of a bubble? Some evidence seems to support this proposition: for example, in the majority of countries, the pre-crash period displayed significant serial dependence in stock returns, dependence that was definitely not present in the post-crash period. However, further work is necessary to ascertain whether this measured serial dependence is unusual relative to what one would have expected to find, even in a perfectly random process, by choosing a sample period that happened to culminate in a random peak. Ross (1987) shows that such ex post sample period selection will induce upward bias in estimates of serial dependence. Cross-country tests failed to detect this bias, but there are several ambiguities in the tests that will have to be resolved in future work.

The crash is history. What implications, if any, does it have for regulatory policy? Is there evidence that popular regulations or rules would have mitigated the crash, or that they would decrease price volatility in general? There is very little evidence in favor of the efficacity of margin requirements, price limits, or transactions taxes. Despite a large number of empirical studies, no one has provided evidence that margin requirements have an impact on volatility. There has been at least one recent paper claiming the contrary, but a careful examination of its methods have uncovered enough problems to cast those results into doubt.

As for price limits, there must be a very short-term impact on measured volatility, for the measured market price at a trading halt is likely to understate the direction of movement. Yet even for daily data, the cross-country evidence is slim that price limits reduce volatility, and there is no evidence at all that they work over periods as long as a week. In other words, trading halts caused by limits seem to have no effect on true volatility.

Transaction taxes are inversely but insignificantly correlated with volatility across countries, and the effect is too questionable for taxes to be used with confidence as an effective policy instrument.


Price Volatility Price Limit Serial Dependence Measured Volatility Margin Requirement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. AderholdRobert, CummingChristine and HarwoodAlison. “International Linkages among Equities Markets and the October 1987 Market Break.” Federal Reserve Bank of New York Quarterly Review 13 (2, Summer 1988), 34–46.Google Scholar
  2. Allen, Franklin and Gorton, Gary. “Rational Finite Bubbles.” The Wharton School, University of Pennsylvania, No. 41-88, November 1988.Google Scholar
  3. Amihud, Yakov, Mendelson, Haim and Wood, Robert A. “Liquidity and the 1987 Stock Market Crash,” Graduate School of Business, New York University, April 1989.Google Scholar
  4. Becker, Brandon and Underhill, David L. “Market Reform Proposals and Actions,” IIT/Chicago-Kent College of Law, Eleventh Annual Commodities Law Institute, October 1988, pp. 20–21.Google Scholar
  5. BennettPaul and KelleherJeanette. “The International Transmission of Stock Price Disruption in October 1987.” Federal Reserve Bank of New York Quarterly Review 13 (2, Summer 1988), 17–33.Google Scholar
  6. Bertero, Elisabetta and Mayer, Colin. “Structure and Performance: Global Interdependence of Stock Markets around the Crash of October 1987.” London: Centre for Economic Policy Research Discussion Paper No. 307, March 1989.Google Scholar
  7. BrennanMichael J. “A Theory of Price Limits in Futures Markets.” Journal of Financial Economics 16 (2 June 1986), 213–233.Google Scholar
  8. Camerer, Colin. “Bubbles and Fads in Asset Prices: A Review of Theory and Evidence.” Journal of Economic Surveys 3 (1, 1989 forthcoming).Google Scholar
  9. DwyerGerald P.Jr. and HaferR.W. “Are National Stock Markets Linked?” Federal Reserve Bank of St. Louis Review 70 (6, November/December 1988), 3–14.Google Scholar
  10. EckardtWalter L.Jr. and RogoffDonald L. “100% Margins Revisited.” Journal of Finance 31 (3, June 1976), 995–1000.Google Scholar
  11. Edwards, Franklin R. “Does Futures Trading Increase Stock Market Volatility?” Financial Analysts Journal (January–February 1988a), 63–69.Google Scholar
  12. Edwards, Franklin R. “Policies to Curb Stock Market Volatility.” Columbia Business School, Center for the Study of Futures Markets, Working Paper CSFM #176, August 1988b.Google Scholar
  13. EstrellaArturo. “Consistent Margin Requirements: Are They Feasible?” Federal Reserve Bank of New York Quarterly Review 13 (2, Summer 1988), 61–79.Google Scholar
  14. FamaEugene F. “Perspectives on October 1987 or What Did We Learn from the Crash.” In: R.W.Kamphuis, R.C.Kormendi, and J.W.H.Watson, eds., Black Monday and the Future of Financial Markets. Homewood, IL: Irwin, 1989.Google Scholar
  15. Federal Reserve System, Staff of the Board of Governors. “A Review and Evaluation of Federal Margin Regulation.” Washington, D.C.: Federal Reserve, December 1984.Google Scholar
  16. GarbadeKenneth D. “Federal Reserve, Margin Requirements: A Regulatory Initiative to Inhibit Speculative Bubbles.” In: P.Wachtel, ed., Crises in The Economic and Financial Structure, Lexington, MA: D.C. Health, 1982, ch. 12.Google Scholar
  17. Goodhart, Charles. “The International Transmission of Asset Price Volatility.” London School of Economics Financial Markets Group, 1988.Google Scholar
  18. GrossmanSanford J. “Insurance Seen and Unseen: The Impact on Markets.” Journal of Portfolio Management 14 (4, Summer 1988), 5–8.Google Scholar
  19. GrubeR. Corwin, JoyO. Maurice and PantonDon B. Market Responses to Federal Reserve Changes in the Initial Margin Requirement, Journal of Finance 34 (3, June 1979), 659–673.Google Scholar
  20. HamaoYasushi, MasulisRonald W. and NgVictor. “Correlation in Price Changes and Volatility Across International Stock Markets.” University of California, San Diego, February 1989.Google Scholar
  21. HamiltonJames D. and WhitemanCharles H. “The Observable Implications of Self-Fulfilling Expectations.” Journal of Monetary Economics 16 (3, November 1985), 353–373.Google Scholar
  22. HardouvelisGikas A. “Evidence on Stock Market Speculative Bubbles: Japan, the United States, and Great Britain.” Federal Reserve Bank of New York Quarterly Review 13 (2, Summer 1988a), 4–16.Google Scholar
  23. “Margin Requirements and Stock Market Volatility.” Federal Reserve Bank of New York Quarterly Review 13 (2, Summer 1988b), 80–88.Google Scholar
  24. Hardouvelis, Gikas A.. “Margin Requirements, Volatility, and the Transitory Component of Stock Prices.” First Boston Working Paper Series FB-88-38, Columbia University, Barnard Collage, November, 1988c.Google Scholar
  25. Hardouvelis, Gikas A. “Stock Market Bubbles Before the Crash of 1987.” First Boston Working Paper Series #FB 89-07, Columbia University Graduate School of Business, 1989.Google Scholar
  26. Harris, Lawrence. “S&P Cash Stock Price Volatilities.” School of Business Administration, University of Southern California, February, 1989.Google Scholar
  27. HartzmarkMichael L. “The Effects of Changing Margin Levels on Futures Market Activity, the Composition of Traders in the Market, and Price Performance.” Journal of Business 59 (2, part 2, April 1986), S147-S180.Google Scholar
  28. HilliardJimmy E. “The Relationship Between Equity Indices on World Exchanges.” Journal of Finance 34 (1, March 1979), 103–114.Google Scholar
  29. HopewellMichael H. and SchwartzArthur L.Jr. “Temporary Trading Suspensions in Individual NYSE Securities.” Journal of Finance 33 (5, December 1978), 1355–1373.Google Scholar
  30. Hsieh, David A. and Miller, Merton H. “Margin Regulations and Stock Market Volatility.” Graduate School of Business, University of Chicago, April, 1989.Google Scholar
  31. JohnsonNormal L. and KotzSamuel. Continuous Univariate Distributions-2. New York: Wiley, 1970.Google Scholar
  32. KamphuisRobert W.Jr., KormendiRoger C. and WatsonJ.W. Henry, eds., Black Monday and the Future of Financial Markets. Homewood, IL: Irwin, 1989.Google Scholar
  33. King, Mervyn and Wadhwani, Sushil. “Transmission of Volatility Between Stock Markets.” London School of Economics Financial Markets Group, November 1988.Google Scholar
  34. KryzanowskiLawrence. “The Efficacy of Trading Suspensions: A Regulatory Action Designed to Prevent the Exploitation of Monopoly Information.” Journal of Finance 34 (5, December 1979), 1187–1200.Google Scholar
  35. LargayJames A.III. “100% Margins: Combatting Speculation in Individual Security Issues.” Journal of Finance 28 (4, September 1973), 973–986.Google Scholar
  36. LargayJames A.III and WestRichard R. “Margin Changes and Stock Price Behavior.” Journal of Political Economy 81 (2, part 1, March/April 1973), 328–339.Google Scholar
  37. LuckettDudley G. “On the Effectiveness of the Federal Reserve's Margin Requirement.” Journal of Finance 37 (3, June 1982), 783–795.Google Scholar
  38. Ma, Christopher K., Rao, Ramesh P. and Sears, R. Stephen. “Volatility, Price Resolution and the Effectiveness of Price Limits.” Columbia Futures Center, Conference on Regulatory and Structural Reform of Stock and Futures Markets, May 1989.Google Scholar
  39. Miller, Merton H. “The Crash of 1987: Bubble or Fundamental?” Keynote Address, First Annual Pacific-Basin Finance Conference, Taipei, March 1989.Google Scholar
  40. MitchellMark L. and NetterJeffrey M. “Triggering the 1987 Stock Market Crash: Antitakeover Provisions in the Proposed House Ways and Means Tax Bill?” Washington, D.C.: U.S. Securities and Exchange Commission, January 1989.Google Scholar
  41. NeumarkDavid, TinsleyP.A. and TosiniSusan. “After-Hours Stock Prices and Post-Crash Hangovers.” Washington, D.C.: Federal Reserve Board, Division of Research and Statistics, Finance and Economics Discussion Series 50, November 1988.Google Scholar
  42. OfficerRobert R. “The Variability of the Market Factor of the New York Stock Exchange.” Journal of Business 46 (3, July 1973), 434–453.Google Scholar
  43. Parhizgari, A. M., Dandapani, K. and Bhattacharya, A. K. “Global Market Place and Causality.” Finance Department, Florida International University, 1988.Google Scholar
  44. Rohatyn, Felix. “A Financial House of Cards.” Time, (October 17, 1988), 48–50.Google Scholar
  45. RollRichard. “Orange Juice and Weather.” American Economic Review 74 (5, December 1984), 861–880.Google Scholar
  46. . “The International Crash of October, 1987.” In: K.W.Kamphuis, R.C.Kormendi, and J.W.H.Watson, eds., Black Monday and the Future of Financial Markets. Homewood, IL: Irwin, 1989, also printed in The Financial Analysts Journal, (September/October, 1988).Google Scholar
  47. RossStephen A. “Uncertainty and the Heterogeneous Capital Good Model.” Review of Economic Studies 42 (1, January 1975), 133–146.Google Scholar
  48. Ross, Stephen A. “Regression to the Max.” Yale School of Organization and Management, December 1987. Salinger, Michael A. “Stock Market Margin Requirements and Volatility: Implications for Regulation of Stock Index Futures.” Graduate School of Business, Columbia University, April 1989.Google Scholar
  49. SamuelsonPaul A. “Indeterminancy of Development in a Heterogenous-Capital Model with Constant Saving Propensity.” In: KarlShell, ed., Essays on the Theory of Optimal Economic Growth. Cambridge, MA: MIT Press, 1967.Google Scholar
  50. SantoniG. J. “The Great Bull Markets 1924–29 and 1982–87: Speculative Bubbles or Economic Fundamentals?” Federal Reserve Bank of St. Louis Review 69 (9, November 1987), 16–29.Google Scholar
  51. Schwert, G. William. “Business Cycles, Financial Crises and Stock Volatility.” Working Paper BC 88-06, Bradley Policy Research Center, University of Rochester, October 1988.Google Scholar
  52. Siegal, Jeremy J. “The Stock Market Crash of 1987: A Macro-Finance Perspective.” The Wharton School, University of Pennsylvania, July 1988.Google Scholar
  53. SofianiosGeorge. “Margin Requirements on Equity Instruments.” Federal Reserve Bank of New York Quarterly Review 13 (2, Summer 1988), 47–60.Google Scholar
  54. Stiglitz, J.E. “Using Tax Policy to Curb Speculative Short-Term Trading.” Conference on Regulatory Reform of Stock and Futures Markets, Columbia University Futures Center, May 1989.Google Scholar
  55. Summers, Lawrence H. and Summers, Victoria P. “When Financial Markets Work Too Well: A Cautious Case for a Securities Transactions Tax.” Mimeo, undated.Google Scholar
  56. TelserLester G. “October 1987 and the structure of Financial Markets: An Exorcism of Demons.” In: R.W.Kamphuis, R.C.Kormendi, and J.W.H.Watson, eds., Black Monday and the Future of Financial Markets. Homewood, IL: Irwin, 1989.Google Scholar
  57. TiroleJean. “On the Possibility of Speculation Under Rational Expectations.” Econometrica 50 (5, September 1982), 1163–1181.Google Scholar
  58. . “Asset Bubbles and Overlapping Generations.” Econometrica 53 (5, September 1985), 1071–1100.Google Scholar
  59. WachtelPaul. Crises in the Economic and financial Structure. Lexington, MA: D.C. Health, 1982.Google Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Richard Roll
    • 1
  1. 1.University of CaliforniaLos AngelesUSA

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