NEW YORK, Oct. 20, 2025 (GLOBE NEWSWIRE) -- OTC Markets Group Inc. (OTCQX: OTCM), operator of regulated markets for trading 12,000 U.S. and international securities, today announced Midnight Sun Mining Corp (TSX-V: MMA; OTCQX: MDNGF), a mineral exploration and development company, has qualified to trade on the OTCQX® Best Market. Midnight Sun Mining Corp upgraded to OTCQX from the OTCID™ Basic Market. Midnight Sun Mining Corp begins trading today on OTCQX under the symbol “MDNGF.” U.S. investors can find cu ...