Southern Copper is trading at $189.00, down 4.58%, amid post-earnings pressure and broader copper and market weakness. - Record Q3 results beat estimates, but shares sold off after the October 21 release amid lower copper production and weaker Peruvian ore grades. - Copper fell as an AI-stock selloff weakened risk appetite; major U.S. indices were lower pre-market. - Evidence points to post-earnings and broader market pressure; it does not establish a fresh company announcement on October 22.