Shake Shack slips 11% after revenue forecast misses lowest Wall Street estimate (SHAK)

· *Shake Shack plunged as much as 11% after reporting lower-than-expected revenue for its fiscal fourth quarter.*
· *The restaurant chain's 2020 revenue forecast also disappointed, missing the lowest estimate among Wall Street analysts.*
· *Shake Shack could see a dent to near-term performance from its investments in new...