\HeaderA{sp500}{sp500}{sp500}
\keyword{datasets}{sp500}
\begin{Description}\relax
The \code{sp500} datafile contains a year's worth of close-of-day data for most of the Standard and Poors 500 stocks. The data is in reverse chronological order, 
with the top row being Dec 31st, 2008.
\end{Description}
\begin{Usage}
\begin{verbatim}sp500\end{verbatim}
\end{Usage}
\begin{Format}\relax
This data file contains the following items:
\describe{
\item[sp500.2008] The raw close-of-day data. The first column is of the DJIA index, the second is the S\&P 500 index, the rest are individual labeled stocks.
\item[sp500.diff] The daily difference.
\item[sp500.percent] The daily percentage change.
}
\end{Format}
\begin{Details}\relax
The goal can be to estimate either index using the individual stocks.
\end{Details}
\begin{Source}\relax
This database was generated using data available http://finance.yahoo.com .
\end{Source}

