Vale is trading at $14.10, up 6.01%, in pre-market, but the reason for the move remains unclear. - The price compares with the September 29 close of $13.30. Available coverage points to weak iron-ore conditions and a UBS BB price-target cut in Brazil, but does not explain the rise. - No directly linked catalyst was confirmed. The supplied crypto figures are not relevant to Vale, and broad index moves were below 0.5%.