Barrick Gold has agreed to buy Randgold Resources in an all-stock merger that values the combined company at around $18 billion.
Why it's a big deal: It creates the world's largest gold mining company.

Barrick Gold has agreed to buy Randgold Resources in an all-stock merger that values the combined company at around $18 billion.
Why it's a big deal: It creates the world's largest gold mining company.