Last weekâs sell-to-buy ratio for just those issues listed on the NYSE or AMEX. That came in at 13.10 to 1, which is the highest reading for this ratio since when Vickers began collecting the data, which was October 1974.
http://www.marketwatch.com/story/insiders-selling-at-unusually-fast-pace-2011-07-28
http://www.marketwatch.com/story/insiders-selling-at-unusually-fast-pace-2011-07-28