This is a good site to keep track of...

http://www.reuters.com/finance/stocks/financialHighlights?symbol=RSC.TO

if you look on the bottom right side you'll see the institutional holders. While I don't know who they all are it helps as you said to follow the money. I'm sure one can find out, but I don't think it is as important as knowing if they are buying or selling.

It looks like in the last 3 months some one or collectively has increased their holdings by 95,500. small, but to the positive.

D