You ever hear of insider trading? Never the less, I do believe that this club does have the right to be exclusive, people do have the right to chose who they want to associate with on their own time and leisure. The thing that does please me, about these femi-nazi's is that they haven't attempted to resort to government or court interference and erode by legal means private citizens rights. They have chosen speech so far. so far being the key word, the left will go through any gutter for there goal.
Discussion to break the law is considered conspiracy. The action (insider trading) is illegal thus deliberate plans to perform the action is illegal.
Private discussion to discuss stock values amongst private individuals, and corporate execs, are certainly not illegal.