(Bloomberg) -- The stock market's tumbling, but for equity traders who amassed record hedges before Election Day, it's not quite as bad as it looks.

Investors had months to ponder the prospect of a rout and data from volatility markets show they spent liberally on instruments designed to cushion the blow. Billions of dollars of what amounts to equity insurance was bought and sold in the week before the election, a reprise of precautions that preceded Brexit.

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