all I know is right now there's a deal on the table that prices PDg shares in direct relation to AR SP. Until that changes PDG SP will move in lockstep to ARs.
The only reason that would change is if
a.) the deal gets voted down and that's a month and a half away
b.) a sweeter offer comes along and that would make PDG shares go up in price.
The biggest downside right now (for the next months or so) is if AR shares tank.