Shares of Sigma Labs Inc. (OTC: SGLB), a company engaged in the development and commercialization of manufacturing and materials technologies, and R&D solutions, are soaring in trading today. At last check, SGLB shares were trading 13.02% higher at $0.0790 on above average volume of 17.84 million. The stock hit a 52-week high of $0.08 earlier today. SGLB shares have gained nearly 50% in the last three trading sessions.