Greenland Energy is trading 21.48% up at $3.54, with no confirmed September 24 catalyst identified. - Shares rose from the September 23 close of $2.91. - Earlier gains followed attention around the U.S.-Denmark-Greenland security agreement and proposed 80 Mile merger. Both developments predate September 24 and do not clearly explain the move; no fresh company-specific announcement or earnings release has been identified.