whether glencore can keep its magic but shake its image. >> reporter: the share interest, in an issue public offering. glencore has been the talk of investors for months. the offering of shares at 8.60, values a 37-year-old commodity producer and trader at $59.3 billion. today in london, it becomes only the third company to join the ft-100 share index on the first day of trading. though the price has fluctuated since unconditional trading began last week, demand has been extraordinary for the biggest ipo since general motors re-entered the stock market last november. >> it's certainly exciting that glencore's coming to market, that they have to become less secretive. there's only a few global trading houses like this on the planet. >> reporter: before having to open the books ahead of this ipo