No, what you are describing is not currently legal in the US. We have to allow the stocks listed on LTSE to trade freely across the entire "National Market Syst

No, what you are describing is not currently legal in the US. We have to allow the stocks listed on LTSE to trade freely across the entire "National Market System" which includes dark pools and incumbent legacy exchanges. So in order to solve this problem we have to start with corporate governance. Remember, though, that shares of stock are not actually commodities. They are contracts and the rights and responsibilities of stockholding emanate from the corporate charter. So as we are able to encode protections and requirements there, they will follow the stock wherever it trades. Through this mechanism, much reform is possible both today and in the future.