Are the short, sometimes confusing messages from the Tweeter in Chief actually moving markets? As KCBS's Matt Bigler reports, some of the top minds on Wall Street are paying big bucks to find out.

<p>Are the short, sometimes confusing messages from the Tweeter in Chief actually moving markets? As KCBS's Matt Bigler reports, some of the top minds on Wall Street are paying big bucks to find out.</p>

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