<p>Jeff Flug, President of Union Square Hospitality Group; Danny Meyer, Founder & CEO of Union Square Hospitality Group; and Randy Garutti, Shake Shack CEO, fourth left to right, celebrate as they ring the New York Stock Exchange opening bell on Friday.</p>
January 31, 2015
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January 31, 2015 8 p.m.
Wild for burgers
Shake Shack shares more than double in stock market debut
NEW YORK - Wall Street went wild for burgers Friday.