Canadian cannabis company Cronos Group Inc. CRON, -3.57% CRON, -2.97% said Monday it has sold all of its shares in Whistler Medical Marijuana Corp., equal to a roughly 19% stake, to Aurora Cannabis Inc. ACB, -23.12% ACB, -23.42% for C$175 million ($131.4 million) in stock. Cronos has received about 2.5 million Aurora shares worth about C$24.6 million and will receive another C$7.6 million upon reaching certain milestones. Cronos shares rose 1.6% premarket and have gained 131% in the last 12 months, while the S&P 500 SPX, -0.34% has gained 4.2%.