The Dow's best day in over a year. Then the S&P 500's worst. Here's what happened after the midterms, how October set it up, and what history does (and doesn't) tell us.
Read MoreThe Dow's best day in over a year. Then the S&P 500's worst. Here's what happened after the midterms, how October set it up, and what history does (and doesn't) tell us.
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