Investment flows going into stock funds worldwide jumped to $85 billion in this month through Friday, according to EPFR Global data. Consumer confidence, which measures Americans' optimism about their own and the economy's well-being, is at a generation high.The amount of people who expect the stock market to climb is the highest it's ever been. For several months they've been willing to bid up virtually anything in the stock market that comes with a certain association: cryptocurrency. Examples include a 500 percent surge in Long Island Iced Tea Corp. the morning it changed its name to Long Blockchain Corp., and the 15-fold rally in bitcoin last year. History shows valuations may remain stretched for an extended period of time before the stock market dips.

Source: Economic Times January 31, 2018 14:26 UTC