and the buyer is...., page-2

I don't think you can say that for sure JoJo. You will see that Anto bought all theirs from the 20th-23rd. 11m shares were also traded on Friday 17th. I think this is when UBS started buying their 7.9m shares. This would then mean that UBS were buying for someone else. My guess is Anto have bought these shares IN RESPONSE to UBS.