Published January 30, 2015 10:16am EST | Updated May 21, 2015 1:28pm EDT

Shake Shack Shares More Than Double From IPO Price

Shake Shack Inc. shares more than doubled from their issue price Friday, climbing to as high as $49 in the first few minutes of trading. The shares were priced late Thursday at $21, which was above the price range of $17 to $19 a share. The burger chain offered 5 million shares and has the option to sell another 750,000.