It is interesting to note from the list of Institutional shareholders of Canadian Superior Energy who appeared on the AMEX that the Canadian Pension Plan Investment Board currently owns 3,030,300 shares of Canadian Superior Energy and that it has been increasing its holding of SNG shares.
The Canadian Pension Plan Board also hold 250,000 shares of Challenger Energy at present, Encana = 10,000,000 shares , Petro Canada =7,900,000 shares, Nexen = 8,000,000 shares.
http://www.mffais.com/sng.html
Cheers; Scott