Profitshave soaredsincethe darkdaysof 2001 and companiesaresoflush with cash that they are buying back their ownshares, mergingandacquiring each other as ifthegoodtimeswillneverend.
The railways were auctioned off into private hands in the hope that private cash and new management would transform it from the dark ages of British Rail.
Stocks trade on dozens of exchanges, automatic trading systems, dark pools and crossing networks these days, and trading in futures and options markets affects trading in the cash markets.