Buenaventura is trading $31.41, 5.3% lower in pre-market amid precious-metals pressure; a direct link is unconfirmed. - No new company-specific announcement explaining the move surfaced in the search. - Reuters reported early September 28 that gold fell 1.5% and silver 2.6% as rising oil prices fueled inflation concerns and rate-hike expectations. - U.S. futures were lower, with index declines under 0.5%. Crypto figures were not a meaningful catalyst; trading activity or volume data was unavailable.