KeyStone’s Your Stock Our Take is Constellation Software Inc. (CSU:TSX), our Star is DIRTT Environmental Solutions Ltd. (DRT:TSX), & our Dog is Guyana Goldfields Inc. (GUY:TSX)
 This week in our Your Stock, Our Take segment we look at Constellation Software Inc. (CSU:TSX), which is engaged primarily in the development, installation, and customization of software relating to the public and private sectors. Constellation Software is a well-run company in a Canadian tech sector that lacks big name power and any real breadth of companies – frankly, it is too small. A listener asks if it is a buy on the recent pullback? Our Star of the week is DIRTT Environmental Solutions Ltd. (DRT:TSX), a technology-driven manufacturer of highly customized interiors. The stock jumped 18% in one day this week after record Q3 results. Finally, our Dog of the week is Guyana Goldfields Inc. (GUY:TSX), engaged in the investment, acquisition, exploration, development and operation of mineral property interests, principally gold resource properties in Guyana, South America. The stock was down 43% on the week after the company revised production guidance for 2018 lower – it has cratered 63% year-to-date in 2018. Is it a Dog or an opportunity?