MST is trading at $16.12, up 2.57%, while the cause of its September 28 move remains unclear. - MST is the Defiance leveraged MSTR ETF, which tracks Strategy’s daily share-price movement with leverage. - No MST-specific announcement explaining the move was identified. - The gain runs counter to a weaker broader market: Reuters reported U.S. stocks fell as oil rose amid the U.S.-Iran stalemate and higher Treasury yields.