BHP buyback hopes send shares higher By: MarketWatch November 04, 2010 at 13:59 PM EDT BHP Billiton Ltd.’s shares climb 5.4% after Canada’s decision to reject BHP’s $38.6-billion bid leads UBS analysts to project a potential $10-billion share buyback. Read More >> Related Stocks: Bhp Billiton Ltd ADR Macy's Potash Corporation of Saskatchewan