Toffeeman - agreed that much of this rise is due to expectation of Trovax deal...I'm sure no-one will argue with that. There has been no announcement yet, hence many short termers appeared to be exiting in the last day or two. If there is no deal, of course SP will may drift down. However, there is potential that this deal could exceed all our expectations - this is the feeling I detect many people having.
r
ps if you think markets are efficient then you would be better off investing passively - buy an index tracker maybe...