A diligent investor not only does due diligence on the company they invest in, but also needs to examine the entire sector and competitors.
Anytime the stock performance of Canb comes into question, you have to look at how other cannabis companies are doing. This determines "is it just Canb, or is sentiment for the entire sector bringing this down" Stating that Canb is crashing, or has crashed, without looking at how the other comparable stocks are doing is short sighted.
Here is an example: Oil took a major dive earlier this week . Guess what happened to all the energy stocks? They went down also because they are in the same sector. Let's say you were invested in an energy stock and it went down 20% in a day (some did), should you automatically assume it's a bad company and sell, without examining factors that may be affecting the energy sector?