The mining company Glencore is considering making a takeover offer for Anglo American that could trigger a multibillion-pound bidding war for the company, according to reports. It sparked a 3% jump in Anglo American’s share price on Friday, making it the top riser on the FTSE 100 and helping to drive the index to an all-time high of 8,215 points. Anglo’s share price rise gives the miner a market valuation of about £37bn, well above the proposed £31bn takeover price offered by the Australian miner BHP, which was rejected by Anglo’s board last week as an “opportunistic” and “unattractive” offer. Although Switzerland’s Glencore is understood to be considering a rival bid for the company, it is not guaranteed that it will make an approach, according to Reuters, which first reported the story. One industry source told the Guardian: “Glencore is definitely looking at an Anglo bid. There is no doubt that banks are already advising on what structure and price might make sense for them. I really can’t see them not doing anything.” The source added that Anglo is likely to receive an improved offer from BHP and is also expected to attract interest from the UK-Australian miner Rio Tinto,...