US large cap market returns. (Missing a day because of technical problems.)

Fine print

• The data are from Yahoo
• Almost all of the S&P 500 stocks are used (as implied by Wikipedia on 2013 January 5 — see the R commands to scrape the data)
• The initial post was “Replacing market indices”
• The R code is in marketportrait_funs.R — you are free to use these functions however you like