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Rounding and the impact of news: a simple test of market rationality

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Author Info
Meredith Beechey
Jonathan H. Wright

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Abstract

Certain prominent scheduled macroeconomic news releases contain a rounded number on the first page of the release that is widely cited by newswires and the press and a more precise number in the text of the release. The whole release comes out at once. We propose a simple test of whether markets are paying attention to the rounded or unrounded numbers by studying the high-frequency market reaction to such news announcements. In the case of inflation releases, we find evidence that markets systematically ignore some of the information in the unrounded number. This is most pronounced for core CPI, a prominent release for which the rounding in the headline number is large relative to the information content of the release.

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Publisher Info
Paper provided by Board of Governors of the Federal Reserve System (U.S.) in its series Finance and Economics Discussion Series with number 2007-05.

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Date of creation: 2007
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Handle: RePEc:fip:fedgfe:2007-05

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Related research
Keywords: Financial markets;

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Owen A. Lamont & Richard H. Thaler, 2001. "Can the Market Add and Subtract? Mispricing in Tech Stock Carve-Outs," NBER Working Papers 8302, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
    Other versions:
  2. Pierluigi Balduzzi & Edwin J. Elton & T. Clifton Green, 1997. "Economic News and the Yield Curve: Evidence from the U.S. Treasury Market," New York University, Leonard N. Stern School Finance Department Working Paper Seires 98-005, New York University, Leonard N. Stern School of Business-.
    Other versions:
  3. Veronesi, Pietro, 1999. "Stock Market Overreaction to Bad News in Good Times: A Rational Expectations Equilibrium Model," Review of Financial Studies, Oxford University Press for Society for Financial Studies, vol. 12(5), pages 975-1007.
  4. Christopher A. Sims, 2006. "Rational Inattention: Beyond the Linear-Quadratic Case," American Economic Review, American Economic Association, vol. 96(2), pages 158-163, May. [Downloadable!]
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This page was last updated on 2009-11-18.

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