Video: Investment tips: Glencore Xstrata a buy On Friday, after finally completing a 15-month deal process to tie-up the two FTSE 100 resource companies, shares in the newly merged Glencore Xstrata, traded for the first time. The Billionaire CEO Ivan Glasenberg says he will not be cracking open the champagne for another five years, even as the stock enjoyed a strong start to trading. Questor Editor Garry White has not been a fan of Glencore since it floated, arguing that its shares were over-valued. So what has changed his mind?