Robert Shiller has been out there talking about a stock-market bubble again. In a couple of interview this weekend, he expressed concerns about a market that keeps going up. Shiller has some clout among investors because he called a bubble in the U.S. housing market via his book “Irrational Exhuberance”  just as everyone thought prices had nowhere to go but up. Last week, Shiller said he was concerned about a rise in his cyclically adjusted price-to-earnings ratio. (Read the Wall Street Journal article). He said his CAPE ratio could be pointing to a bubble, but “it will take a little time to tell.” He also said ... (full story)