Anglo American and Teck Resources have agreed to merge in a deal worth more than US$53 billion (A$80.2 billion), creating the mining sector's second-largest acquisition ever.
The newly minted entity, Anglo Teck, will be headquartered in Canada with a primary listing in London.
Anglo shareholders will own 62.4% of the merged company, and Teck the remaining 37.6%.
It will also catapult the combined group into the world's fifth-largest copper producer.
It's a massive punt on copper demand as electric vehicles multiply and AI data centres devour power infrastructure.
Mining giants poised to spoil
The merger announcement has mining heavyweights BHP and Glencore sniffing around for potential disruption opportunities.
The global miners could still gate-crash the party with competing bids, according to Berenberg analysts, though any rival offer would trigger a costly US$330 million break fee.
Glencore's already had a crack at Teck. It launched a failed US$22.5 billion takeover assault in 2023, which Teck's board understandably swatted away.
The Swiss miner eventually settled for Teck's steelmaking coal operations in a US$6.93 billion consolation prize - a deal that finally closed in July 2024 after obtaining Canadian government approval loaded with employment and headquarters strings attached.
However, Glencore still remains the undisputed champion of mining mega-deals.
Its US$90 billion merger with Xstrata in 2013 still holds the record as history's largest mining M&A deal, making the Anglo-Teck combination the runner-up.
Both companies and their investors are likely to see the merger as a win.
Anglo's defensive chess move
Anglo American had faced its own corporate raiders recently. BHP attempted a US$53 billion takeover last year, which Anglo's board rejected faster than a dodgy mining permit application.
The company has been shedding assets - dumping coal, platinum and diamond operations to focus on critical minerals.
"I think the deal itself is a very strong defence," said one source familiar with the Anglo-Teck negotiations.
The zero-premium structure could invite rival predators, but Anglo shareholders will pocket a US$4.5 billion special dividend to sweeten the deal.
Teck's billion-dollar problems at Quebrada Blanca
Teck's prized Quebrada Blanca mine in Chile has been burning cash.
Cost overruns and missed production targets, courtesy of tailings disposal dramas, have been dragging down the company's share price, and the merger is being seen as a positive turnaround for the miner.
Analysts agree. "We have a positive outlook on this merger, as it is expected to deliver significant value and growth," Gimme Credit senior bond analyst Franck Bekaert said.
Anglo CEO Duncan Wanblad will remain chief executive of the combined company, while Teck's Jonathan Price becomes deputy CEO.
Wanblad called it a "true merger of equals" - despite Anglo's significantly larger market capitalisation.
Regulatory scrutiny awaits
The deal faces scrutiny across multiple jurisdictions, including Canada, China and the U.S. - a regulatory obstacle course that could take 12-18 months to navigate.
Canadian Industry Minister Mélanie Joly confirmed the merger will be reviewed under the Investment Canada Act to ensure it delivers a "net benefit" to the country.
The decision to maintain headquarters in Canada, protecting Teck's "Canadian legacy," should grease the wheels for regulatory approval, according to sources close to the deal.
Canadian officials in the past have shown considerable hostility towards foreign takeovers - especially to Glencore's previous Teck bid - making the headquarters commitment strategically crucial.
Canada's Keevil family, which controls the majority of Teck's A-class shares, has thrown their support behind the merger.
Both companies' shares rocketed on the announcement. Teck jumped more than 14% on the Toronto Stock Exchange, while Anglo American climbed over 9% in London - its biggest daily gain in more than a year.