Energy Shock Wipes $264 Billion Off the World's Top Mining Stocks

The world's 50 most valuable mining companies lost $264 billion in market value in September as oil-driven inflation fears pushed bond yields to their highest since 2008 and the Federal Reserve into its first rate hike in three years, dragging gold and the stocks tied to it sharply lower.The group ended the month worth $2.26 trillion, according to MINING.COM's Top 50 ranking, the second-largest monthly decline since the ranking began at the end of 2019, behind only March's $434 billion drop. September erased roughly three-quarters of August's record $357 billion gain.Rising oil prices and Fed Chair Kevin Warsh's hawkish speech at Jackson Hole in late August had already set off a global bond selloff that lifted a Bloomberg gauge of government bond yields to its highest level since mid-2008. On Sept. 16, the Fed raised its benchmark rate a quarter point to a range of 3.75% to 4%, its first increase since July 2023. "This summer's inflation readings do not tell me that underlying trends have meaningfully improved," Warsh said after the decision.Higher yields and a firmer dollar raise the cost of holding a metal that pays no interest. New York gold futures fell 6.4% over the month to $4,158 an ounce, while silver lost 9%.Gold miners take the bruntThe 15 gold producers in the ranking lost a combined $79 billion, or 12.7%, and none finished the month higher. Kinross Gold cut its 2026 and 2027 production outlook on Sept. 23, citing severe winter weather at La Coipa in Chile and weaker grades and recoveries at Round Mountain in Nevada, and finished the month down 21.3%. Shandong Gold fell 27.8%, the worst performance in the ranking, after lowering its 2026 mined-gold target. Gold Fields dropped 21%, or $8.6 billion, in a month that ended with Northern Star Resources rejecting its unsolicited A$38.7 billion ($27.1 billion) takeover proposal. Northern Star Chair Michael Chaney said the offer "falls well short of what the board considers to be its fundamental value." Bloomberg has since reported that Gold Fields is considering a larger cash component.Copper's problems were closer to the mineCopper prices ended September almost exactly where they started, but copper producers still lost $44 billion. BHP posted the largest dollar loss in the ranking, $26.4 billion, after a worker was killed during maintenance at Escondida, the world's largest copper mine, on Sept. 23, forcing a temporary halt. A week later, the mine's roughly 1,020-member supervisors union rejected BHP's final contract offer, with 95% of participating members backing a strike. BHP requested government mediation on Monday, which puts any walkout on hold for five working days.With Rio Tinto down 8.9% as iron ore stayed below $100 a metric ton, Southern Copper ended a quarter as the ranking's second-most valuable company for the first time, at $171 billion.First Quantum Minerals fell 19.2%, almost entirely on Sept. 30, when a Panamanian ministerial commission recommended negotiating a restart of the shuttered Cobre Panama mine to pay for its eventual closure at no cost to the state. The report makes dropping $27 billion in arbitration claims a condition of any deal and rules out expanding the mine or extending its life. The shares fell as much as 36% before trading was halted and closed 15% lower. The final decision rests with President José Raúl Mulino.Lithium's data shockLithium carbonate futures in Guangzhou fell 22.5% in September to 122,800 yuan ($18,300) a metric ton after price reporter SMM changed how it counts inventories, more than doubling reported Chinese stockpiles to 175,000 tons. Albemarle and Ganfeng Lithium each lost more than a fifth of their value and dropped out of the ranking, leaving Chile's SQM as the only lithium producer in the Top 50.Even after the selloff, the Top 50 closed the third quarter $107 billion higher than it began and remains $118 billion above its value at the end of 2025, though it still sits 18% below February's record.Gold has steadied since the quarter closed after a weak September jobs report on Friday cut the market's odds of an October rate hike to the mid-teens from nearly 70% earlier in the week. Spot gold was trading around $4,140 an ounce on Monday.By Michael Kern for Oilprice.com More Top Reads From Oilprice.comAt Least 50 Iranian Tankers Are Stuck in the Gulf as U.S. Blockade HoldsChina Accelerates Ultra-Deep Drilling to Boost Domestic Oil SupplyJapan Courts Saudi Arabia and UAE as Asia's Oil Supply Fears Persist