Editor's note: Despite Friday's retreat, US stock indexes posted gains of 5% or more for the month, notes @CNNMoney and @CNBC. The S&P 500's 5.5% monthly gain is its best since 2011. - Tom

Editor’s note: Despite Friday’s retreat, US stock indexes posted gains of 5% or more for the month, notes @CNNMoney and @CNBC. The S&P 500’s 5.5% monthly gain is its best since 2011. – Tom
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