One chart shows why both stocks and bonds are tanking at the same time

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• Both stocks and bonds are selling off right now, a shift from their past relationship.
• Until the past few weeks, stocks continued to climb to records as bond prices fell.
• Recently the S&P 500 earnings yield fell below the 10-year Treasury yield to a degree not seen since 2002.

It's getting increasingly difficult to find returns in the market as stock and bond prices fall simultaneously.

The tandem sell-off is a relatively new dynamic.