Cannabis & Biotech Advancers Forging Ahead - Company Contracts With One of The Oldest Marijuana Dispensaries in California. Can someone help me here with a little history on how the markets work. Was it common for stocks like yahoo and google to go down when great news comes out? I mean when they were startups back in the 1900s. Was it common for for their fellow startups to soar? I need to know this.