Read both pages. I am still not clear myself if there are specific shares assigned to each trading system in the market OR if all a companies shares for trading do show up as a pool on all systems. For example; maybe only 70% of SLI shares trade on the venture, while the remaining 30% of tradable shares trade on the alternative systems.

Bottom line, I am not sure and would appreciate anyone elabo=rating on this.

http://www.investmentexecutive.com/client/en/News/DetailNews.asp?id=55358&pg=1&IdSection=27&IdPub=201