Glorieux, I have enjoyed reading and learning a few things from your posts. However, on this topic, I must differ. You cannot read anything or deduce anything from the trading activities of brokers and wealth management companies. They act for clients, for managed accounts, possibly at times for a house account. Manipulation and other sinister activities are not likely.
I believe the market activities of Dundee, Jitney, and many others only reflects exactly that, their buy and sell trade executions for their clients, and in Dundee's case also for customer accounts they manage. Here is a paragraph from their website:
DundeeWealth is a Canadian owned, TSX listed, innovative wealth management company that creates and provides investment solutions as well as capital markets and advisory services for financial advisors, institutions, corporations and foundations. DundeeWealth oversees $65.4 billion in assets under management and administration.
http://www.dundeewealth.com/en/public/aboutDundee.htm
I have previously commented about Jitney, a Discount Broker.
I recommend any questions about the business of the companies listed in the 'House Positions" post can be answered via Google. Personally, I could probably get more out of reading a goat's entrails than out of the House Position data.
Just my opinion. You are all entitled to yours........Deke
PS: I am not pushing anything here, I trade through TD Waterhouse