Sigma Labs (NASDAQ: SGLB), a leading developer of quality assurance software for the commercial 3D metal printing industry, announced that it has been named to the Russell Microcap(R) Index effective today with the annual Russell U.S. Indexes reconstitution. The announcement noted that membership in the Russell Microcap Index also entails automatic inclusion in other appropriate growth … Continue reading InvestorNewsBreaks – Sigma Labs Inc. (NASDAQ: SGLB) Joins Russell Microcap Index