U.S.-based cable group Liberty Global (LBTYA.O) has bought BSkyB’s (BSY.L) 6.4 percent stake in ITV (ITV.L), Britain’s biggest free-to-air commercial broadcaster, boosting its shares on hopes of a wider bid. Billionaire John Malone’s Liberty, which bought British cable operator Virgin Media as part of a European expansion last year, said it did not intend to make an offer for the rest of the broadcaster, but ITV shares still rose 9 percent.