#' @section PERF factor:
#'
#' The *PERF* factor is the arithmetic average of the returns on the two low-P2
#' portfolios (underpriced stocks) minus the arithmetic average of the returns on
#' the two high-P2 portfolios (overpriced stocks).
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.