I couldn’t begin to hazard a guess as to what a share of Apple “should be” worth, but if I do a little electronic research, I now have the advice that “around $190/share” is probably right.
Did I collude just there?
e.g. take a cartel that you genuinely think is a cartel. Now instead of them all colluding, imagine that they set up Price Advisor LLC, and that no two of them ever talk to each other to set prices. All price setting is done by Price Advisor LLC. Moving the price setting into this LLC does not make the operation not a cartel. The LLC saying it's "checking comparables" does not make it not a cartel. After all, if a legitimate cartel could dodge this by just making a new LLC, then it would almost always make sense to cartelize because you can always act as a cartel without being considered a cartel for the cost of $500.
there is also the issue of market concentration. generally speaking in a regular, healthy market many people hold stock and possibly undercut each other. In financial cases where there is actual price fixing going on (e.g. LIBOR) there has been a lot of prosecution.