Buenaventura is trading 4.6% higher at $27.99, alongside a stronger materials-sector pre-market. - The price compares with the November 3 close of $26.76. - XLB is up 1.58%, alongside gains in major U.S. index futures. - No new company-specific announcement explaining the November 4 move surfaced in the search. Third-quarter results and dividend approval were reported in late October and are recent background, not a confirmed fresh catalyst.