Top Mining Companies Shed $712 Billion in Market Value

The world’s 50 most valuable mining companies lost $712 billion in market value since February, declining 26% from their peak. The MINING.COM TOP 50 ranking, now at its smallest since November last year, saw $226 billion wiped off in October alone, following a $264 billion loss in September.

Several factors contributed to the widespread market decline. Hotter US inflation data increased bets on another Federal Reserve rate hike. Oil prices rose due to the Middle East conflict, and a rout in technology stocks forced funds to sell metals to cover losses elsewhere.

Gold experienced its worst October since 2008, closing the month at $3,884 an ounce. This was a 6.6% drop and the first month-end close below $4,000 since September last year. Sixteen gold miners in the ranking saw their combined value fall by $55 billion, a 9.9% decrease.

Silver had its worst month of the year, falling 18.2% to $49.39. This marked its first time below $50 since October 2025, and it stands 58% below its late January peak of $116.58. Platinum fell 16% and palladium dropped 19% during the month.

The copper price itself saw little movement in October, ending at $6.47 a pound, down 1.4% for the month. Despite this, the eleven copper mining companies in the ranking lost $69 billion, a 13.3% fall. This represented the largest dollar decline among all sectors.