Originally Posted by
LTNman
For every share that is sold someone has just bought it.
That's not quite how share prices work, as the share price quoted is often a sort of "theoretical" price, if there were to be a sale. Many shares do not trade each day, yet their prices are always quoted and still go up and down.
The large block could have been put up for sale but no one had bought them, then the price just goes down and down.