Core Viewpoint - BHP Group Ltd. has entered into a $4.3-billion silver streaming agreement with Wheaton Precious Metals Corp., marking the most valuable precious-metals streaming transaction to date [1][2]. Group 1: Transaction Details - The agreement involves Wheaton paying BHP an upfront consideration of $4.3 billion and ongoing payments equal to 20% of the spot silver price for each ounce delivered [3]. - The streaming agreement initially covers 33.75% of Antamina's silver output attributable to BHP, which will decline to 22.5% after 100 million ounces have been delivered [3]. Group 2: Strategic Implications - This transaction allows BHP to monetize silver byproduct at Antamina while maintaining full exposure to its core copper, zinc, and lead production [4]. - The structure of the agreement does not affect BHP's existing customer contracts or its rights in the joint venture [4]. Group 3: Operational Context - Antamina is one of the world's largest copper-zinc operations, located about 270 km north of Lima in Peru's Ancash region, with BHP's share producing 124,200 tons of copper, 129,400 tons of zinc, and 5.4 million ounces of silver in 2025 [5]. Group 4: Impact on Wheaton - For Wheaton, the transaction significantly upgrades its existing streaming arrangement tied to Glencore's interest in the mine, doubling its exposure to Antamina's silver production from 33.75% to 67.5% [7]. - The CEO of Wheaton noted that the deal reflects tightening supply conditions for quality silver production, which is becoming harder to source amid growing demand for industrial applications and safe-haven investments [7].