Max Michael wrote:
There is no adjustment in the original rules. As I've heard attributed to Jay Tummelson "It's your game. Play it any way you like".
That being said the value of the stocks are situational and not necessarily related to how many are still left on offer.
Remember that only cash counts towards victory points at the end of the game and stocks are worthless. So any stocks you buy need to give you a return on your investment.
Thanks for the response.