It's hard to judge the impact of a conference on a stock price. In the past, I've owned stock in companies that attended these type of events, and the stocks would have a strong move the following week, as it appeared that the investors were doing due diligence before making their investments.
The Benzinga Conference is a virtual Who's Who of USA Cannabis, and the impact of Justin Dye attending will make it so that more and more folks don't say "Schwazze what?"