Sociedad Quimica Minera Chile is trading at $64.45, down 4.01%, amid macro pressure from rising oil prices and bond yields. - No clear company-specific announcement explaining the September 28 move surfaced in the search. - Reuters reported President Trump’s rejection of Iran’s proposal pushed oil prices higher and renewed inflation concerns. - Materials-sector weakness added context, with the supplied trend showing XLB down 1.55%; evidence does not confirm a company-specific catalyst.