In February of 2013, Nouriel Roubini...told Yahoo Finance that the U.S. was about to enter an asset bubble that would be “bigger than the one we had in 2003-06.” ...He believes that valuations in some markets are already stretched and will continue to stretch until seeing a shakeout around two years down the line, in 2016.http://finance.yahoo.com/news/roubini--u-s--equities-will-be-strong-until-2016-133934757.html