according to Tom Kee, who runs the StockTradersDaily investor web site.
"They've been moving in tandem since 2009, until recently. Earnings per share for the Dow Jones industrial average have flatlined and the price has taken off," Kee said. "There is something happening here that defines a bubble."
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After being stuck at $19.17 a share in early 2009, Dow earnings jumped to a peak of $36.15 in 2012.