Qualcomm is trading 5.06% lower at $189.21, with no clear company-specific catalyst identified for the September 28 decline. - Samsung’s planned Galaxy S27 use of Qualcomm’s new Snapdragon processor is positive company news, not an explanation for the drop. - Reuters reported President Trump’s rejection of Iran’s proposal pushed oil higher, rekindled inflation concerns and drove Treasury yields to multi-decade highs. - That risk-off backdrop is consistent with broader market declines, though reports do not specifically link it to Qualcomm’s move.