RE: pugWith all due respect, your question is not simple.
First of all, who knows where the shares are coming from, there are hundreds of thousands of people in the market everyday. With CAE, it is a combination of retail and institution transactions.
Second, there is barely any downward pressure, the stock is off by what 10 cents from yesterdays close.
Third, it is a very liquid stock, so it's not uncommon to see high volume, in fact, it's uncommon to see low volume.