Rio Tinto (RIO LN) CEO says that they are looking to build commodity trading capabilities

Among the diversified majors there has long been a structural split between the producer-traders, which run large marketing and trading books alongside their mines, and the pure producers, which have historically sold at or near benchmark and left the merchandising margin to intermediaries. Moves from the second camp toward the first have tended to be gradual, built through hiring of trading desks and expansion of marketing arms rather than headline acquisitions, and the stated rationale has been consistent: capturing margin between mine gate and end customer, better intelligence on physical flows, and the ability to arbitrage grade, location and timing differentials rather than accepting index pricing. The established pattern is that the trading houses and the hybrid miners resist this kind of entry, since more in-house trading at producers compresses the third-party merchandising margin on which the independent model depends. The questions that matter are scope and build path: whether this covers the full commodity suite or starts with the bulk and base metals where the company already has scale, and whether capability is grown organically or bought, with each route carrying a different risk and regulatory profile. Peer commentary and hiring flows out of the trading houses are the usual early tells. As a strategic signal from a chief executive rather than a transaction, it is directional and slow-burning.