HOUSTON, July 10, 2025 /PRNewswire/ -- MTM Critical Metals Ltd (ASX: MTM; OTCQX: MTMCF), soon to be renamed Metallium Ltd, begins trading today on the OTCQX® Best Market, an upgrade from the OTCQB® Venture Market.Qualifying for the upgrade to the OTCQX marks a key milestone in the company's U.S. capital markets strategy and enhances visibility and access for North American investors."Graduating to OTCQX is a significant step forward in our U.S.-focused strategy," said Michael Walshe, Managing Director & CEO ...