Time Stamp Errors and the Stock Price Reaction to Analyst Recommendation and Forecasts Revisions
AbstractThis paper investigates the problem of time stamp errors in the IBES database. We show that IBES did not store the original announcement date of both recommendations and forecasts on U.S. stocks until 2001 and even later for other countries. The announcement date in IBES is often effectively the date on which the information was recorded by IBES and, therefore, systematically delayed. Using event study analysis and comparing IBES to alternative data sources, we show that the announcement day effect is underestimated in IBES while pre-announcement returns are overestimated as they often include the effective announcement day. We also show that time stamp errors in IBES are not randomly distributed in the cross-section but differ significantly across several firm, broker, and analyst characteristics. A consequence is that cross-sectional differences in announcement returns may be driven by cross-sectional differences in time stamp errors. We also show how existing research is affected by time stamp errors in IBES. Finally, we suggest three alternative ways to mitigate the time stamp error problem in daily IBES data.
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Bibliographic InfoPaper provided by University of St. Gallen, School of Finance in its series Working Papers on Finance with number 1215.
Length: 59 pages
Date of creation: Feb 2012
Date of revision: Oct 2013
Analyst recommendations; Analyst forecasts; Stock price reaction; Pre-announcement effect; Time stamp errors; Data providers.;
Find related papers by JEL classification:
- G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
- G24 - Financial Economics - - Financial Institutions and Services - - - Investment Banking; Venture Capital; Brokerage
- G29 - Financial Economics - - Financial Institutions and Services - - - Other
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- Green, T. Clifton, 2006. "The Value of Client Access to Analyst Recommendations," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 41(01), pages 1-24, March.
- Brad Barber, 2001. "Can Investors Profit from the Prophets? Security Analyst Recommendations and Stock Returns," Journal of Finance, American Finance Association, vol. 56(2), pages 531-563, 04.
- White, Halbert, 1980. "A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity," Econometrica, Econometric Society, vol. 48(4), pages 817-38, May.
- Jegadeesh, Narasimhan & Kim, Woojin, 2006. "Value of analyst recommendations: International evidence," Journal of Financial Markets, Elsevier, vol. 9(3), pages 274-309, August.
- Jung, Boochun & Shane, Philip B. & Sunny Yang, Yanhua, 2012. "Do financial analysts' long-term growth forecasts matter? Evidence from stock recommendations and career outcomes," Journal of Accounting and Economics, Elsevier, vol. 53(1), pages 55-76.
- Alexander Ljungqvist & Christopher Malloy & Felicia Marston, 2009. "Rewriting History," Journal of Finance, American Finance Association, vol. 64(4), pages 1935-1960, 08.
- Roger K. Loh & René M. Stulz, 2011. "When Are Analyst Recommendation Changes Influential?," Review of Financial Studies, Society for Financial Studies, vol. 24(2), pages 593-627.
- AltInkIlIç, Oya & Hansen, Robert S., 2009. "On the information role of stock recommendation revisions," Journal of Accounting and Economics, Elsevier, vol. 48(1), pages 17-36, October.
- Frankel, Richard & Kothari, S.P. & Weber, Joseph, 2006. "Determinants of the informativeness of analyst research," Journal of Accounting and Economics, Elsevier, vol. 41(1-2), pages 29-54, April.
- Womack, Kent L, 1996. " Do Brokerage Analysts' Recommendations Have Investment Value?," Journal of Finance, American Finance Association, vol. 51(1), pages 137-67, March.
- Narasimhan Jegadeesh & Joonghyuk Kim & Susan D. Krische & Charles M. C. Lee, 2004. "Analyzing the Analysts: When Do Recommendations Add Value?," Journal of Finance, American Finance Association, vol. 59(3), pages 1083-1124, 06.
- Yonca Ertimur & Jayanthi Sunder & Shyam V. Sunder, 2007. "Measure for Measure: The Relation between Forecast Accuracy and Recommendation Profitability of Analysts," Journal of Accounting Research, Wiley Blackwell, vol. 45(3), pages 567-606, 06.
- Christophe, Stephen E. & Ferri, Michael G. & Hsieh, Jim, 2010. "Informed trading before analyst downgrades: Evidence from short sellers," Journal of Financial Economics, Elsevier, vol. 95(1), pages 85-106, January.
- Hugon, Artur & Muslu, Volkan, 2010. "Market demand for conservative analysts," Journal of Accounting and Economics, Elsevier, vol. 50(1), pages 42-57, May.
- Jacob, John & Lys, Thomas Z. & Neale, Margaret A., 1999. "Expertise in forecasting performance of security analysts," Journal of Accounting and Economics, Elsevier, vol. 28(1), pages 51-82, November.
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