Why Is Kinross Gold ( $KGC ) Stock Down -12.67% Today? (Find out why any stock moved today on Tickeron.) KGC shares fell roughly 12.67% in Thursday's session, tumbling from a prior close of $27.62 to about $24.12. The primary catalyst was an operational update that cut 2026–2027 production guidance and raised cost guidance. Setbacks were concentrated at the La Coipa mine in Chile (extreme winter storms) and Round Mountain in Nevada (weaker grades and recoveries). $AEM $WPM $AU $NEM $IAG