RNG - OSTK NBIX among premarket gainers July, 30 2019 09:15 AM Ringcentral Inc. Class A Sigma Labs (NASDAQ:SGLB) +19% to work with airbus to deploy PrintRite3D rapid test and evaluation programMore news on: Sigma Labs, Inc., Valeritas Holdings, Inc., RingCentral, Inc., Stocks on the move, Read more ...