• Rio Tinto (RIO) is likely to seek an extension of merger talks with Glencore (GLNCY), with a UK "Put Up or Shut Up" deadline set for 5:00 p.m. London time today, rather than immediately walking away as earlier reports suggested.
  • Glencore shares have risen approximately 7-20% year-to-date on merger speculation, despite a recent 11% copper production decline in 2025 due to Chilean droughts, with 2026 guidance cut to 810,000–870,000 tonnes.
  • A potential merger would create a combined entity valued around $207 billion, dominating copper supply critical for AI and green energy, but faces antitrust scrutiny from China, Europe, and the US.

Merger Clock Ticks Down

Rio Tinto and Glencore are in the final hours of a 28-day UK "Put Up or Shut Up" period, with sources indicating that Rio Tinto is leaning toward requesting an extension to continue negotiations rather than making a firm offer or withdrawing immediately. The deadline expires at 5:00 p.m. London time today, February 5, 2026, amid intense market speculation that has buoyed Glencore's shares by roughly 7% since talks were confirmed on January 8 and up to 20% year-to-date.

"We're in a holding pattern until the deadline passes," said one person familiar with the matter, who spoke on condition of anonymity because discussions are private. Efforts to reach representatives from both companies for comment were unsuccessful as of this morning.

Copper Crunch Drives Deal Logic

The merger talks come against a backdrop of a global copper "crunch," with prices hovering around $14,000 per tonne due to supply shortfalls and surging demand from artificial intelligence and renewable energy sectors. Glencore's operational challenges, including a significant production miss in Chile, have bolstered the case for a tie-up with Rio Tinto, which could leverage its expertise to stabilize output. A combined entity would control a vast portfolio of assets, from Rio's Pilbara iron ore and Oyu Tolgoi copper mine to Glencore's Collahuasi in Chile and operations in the Democratic Republic of Congo.

However, Rio Tinto investors, particularly in Australia where over 20% of its shares are held, have expressed skepticism about overpaying for Glencore's early-stage assets. "There's a real debate here about value, especially with copper prices at record highs," noted an analyst from a fund with holdings in both companies, who requested not to be named. Rio Tinto shares have fallen about 6% on fears of a premium, while Glencore's recent production woes have tempered some of the merger-driven gains.

Regulatory and Strategic Hurdles

If a deal moves forward, it will face intense antitrust scrutiny, echoing past blocked mergers like the BHP (BHP)-Rio iron ore joint venture. China, the top copper buyer, is wary of increased pricing power, and regulators in Europe and the US are expected to review the combination closely. Geopolitical factors also loom large, with Glencore's trading arm seen as an asset in volatile markets, but China's resource security concerns could force asset sales.

On the ground, Glencore is already eyeing a sale of 40% of its DRC copper and cobalt assets for approximately $9 billion to a US-backed group, and a potential coal spin-off to appease ESG investors if no merger occurs. Meanwhile, Rio Tinto is exploring an asset-for-equity swap with its top shareholder, Chinalco, which holds an 11% stake, to enable buybacks and other deals.

What's Next

In the short term, all eyes are on the 5 p.m. deadline. If Rio Tinto requests an extension, Glencore is likely to agree, keeping talks alive. Without a deal, Glencore would need to address its production issues independently, while Rio Tinto could focus on growth at Oyu Tolgoi and pursue mid-tier copper firms. Analysts point out that the copper gap for AI and energy isn't going away, making consolidation in the sector almost inevitable.

Correction: An earlier version of this article incorrectly stated that Glencore shares sank 10%; they have actually risen on merger speculation, though gains were tempered by production misses. The deadline for the UK "Put Up or Shut Up" rules is today, February 5, 2026.