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The monthly returns of IBM stock and the S&P 500 index from January 1926 to December 2008. This data has been discussed by Tsay (2010, Chapter 8).
data(IbmSp500)
A data frame with 996 observations on the following 3 variables.
date
a numeric vector
ibm
sp
Tsay, R. S. (2010). "Analysis of Financial Time Series". Wiley, New York, 3rd edition.
data(IbmSp500) plot(IbmSp500) acf(IbmSp500)
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