NEW YORK, April 30, 2026 (GLOBE NEWSWIRE) -- OTC Markets Group Inc. (OTCQX: OTCM), operator of regulated markets for trading 12,000 U.S. and international securities, today announced Koryx Copper S.A. (TSX-V: KRY; OTCQX: KRYXF), a Luxembourg copper development company, has qualified to trade on the OTCQX® Best Market. Koryx Copper S.A. upgraded to OTCQX from the OTCQB® Venture Market. Koryx Copper S.A. begins trading today on OTCQX under the symbol “KRYXF.” U.S. investors can find current financial disclosu ...