Barrick Gold ( TSE:ABX ) ( NYSE:GOLD ) stock settled at $13.22 on Monday. Barrick was ranked as the biggest gold mining company in the world in 2017 and got even bigger in 2018: the US$18 billion mega-merger of Barrick Gold and Randgold Resources was one of the mining industry's biggest moments in 2018. On Monday, the company announced it had entered into a 50-50 strategic alliance with junior miner Reunion Gold ( CVE:RGD ) to explore and develop projects in South America. Shares of Reunion Gold jumped 11.8% on Monday at C$0.19.