Vetr Crowd Upgrades Shake Shack, 66% Of Users Are Bullish By: Benzinga via Benzinga December 11, 2015 at 14:22 PM EST Shares of Shake Shack Inc (NYSE: SHAK) have lost nearly 25 percent over the past three months. The Vetr crowd upgraded Shake Shack to a ... Read More >> Related Stocks: Red Robin Gourmet Burgers Inc Shake Shack Inc