Here's why one trader is buying the pound ahead of U.K. Parliament's vote on Brexit

Pound futures get pounded as the U.K. Parliament prepares to vote on a Brexit deal. With CNBC's Seema Mody and the Futures Now traders, Jim Iuorio at the CME and Anthony Grisanti at the NYMEX.
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Tue, Mar 12 20192:06 PM EDT