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Asymmetric Information in the Stock Market: Economic News and Co-movement

Rui Albuquerque () and Clara Vega

No 5598, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: We analyze the effect that real-time domestic and foreign news about fundamentals have on the correlation of stock returns of a small open economy, Portugal, and a large open economy, the U.S. We also study the role of public and private information in the price formation process in the U.S. and Portuguese stock markets. First, and consistent with our theoretical model, we find that U.S. macroeconomic news and Portuguese earnings news do not affect the cross-country stock market correlation, whereas Portuguese macroeconomic news lowers the cross-country stock market correlation. Second, we find that U.S. public information affects Portuguese stock market returns, but this effect is diminished when U.S. stock market returns are included in the regression; we provide evidence in the paper that this effect does not derive from contagion as commonly accepted. Finally, public information news in the U.S. is associated with increased liquidity, while the effect in Portugal depends on the type of news releases.

Keywords: contagion; information spillovers; international equity returns; private information; public news announcements (search for similar items in EconPapers)
JEL-codes: F3 G12 G14 G15 (search for similar items in EconPapers)
Date: 2006-03
New Economics Papers: this item is included in nep-fin and nep-fmk
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