OTC Markets OTCQX - Delayed Quote • USD Alta Copper Corp. (ATCUF) Follow Add holdings 0.3210 0.0000 (0.00%) At close: May 23 at 4:00:00 PM EDT Conversations Community Insights Related Tickers HDRSF Highland Copper Company Inc. 0.0700 +8.02% ASCUF Arizona Sonoran Copper Company Inc. 1.5250 +1.67% BFGFF Giant Mining Corp. 0.1680 -1.18% LUN.TO Lundin Mining Corporation 13.10 +4.72% FCX Freeport-McMoRan Inc. 39.02 +3.50%