Suncor Offers $15.5 Billion For Petro-Canada By: MarketMinute.com Stock News March 23, 2009 at 14:44 PM EDT Petro-Canada (NYSE: PCZ) was the target of a $15.5 billion acquisition offer by Suncor Energy (NYSE: SU). Both companies have delayed projects to develop oil sands resources in Alberta. Shares of Petro-Canada jumped $5.76 to $29.77.