Greenland Mines is trading at $12.72, down 13.23%, amid broader market pressure; the company-specific cause is unconfirmed. - No new company-specific catalyst was identified for September 28; the latest reported company announcements were from September 25. - Higher oil prices and Treasury yields followed President Trump’s rejection of Iran’s proposal, reviving inflation concerns and weighing on stocks. - The provided sector context shows materials down 1.55%.