... The total value of all the stocks on the U.S. stock market is now 216% of gross domestic product, a metric once cited by Warren Buffett as his favorite yardstick for whether the market was cheap or expensive. The current reading is “one of the highest levels on record,” according to calculations by Jennifer Nash at Advisor Perspectives. According to another long-running measure, the Tobin’s Q, the market is more than twice average valuations. ...
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