On February 16, 2026, Wheaton Precious Metals Corp., through its wholly owned subsidiary Wheaton Precious Metals International Ltd., entered into a definitive precious metals purchase agreement with a wholly owned subsidiary of BHP Group Limited covering BHP's 33.75 percent share of the silver produced at the Antamina mine in Peru. The transaction closed on April 1, 2026. As a result, Wheaton's attributable silver production from Antamina increased to a combined 67.5 percent, up from the 33.75 percent already delivered under its existing stream with a subsidiary of Glencore plc. Wheaton paid upfront cash consideration of US$4.3 billion, described as the most valuable precious metals streaming transaction to date based on upfront consideration. Under the agreement, effective April 1, 2026, Wheaton purchases the equivalent of BHP's 33.75 percent of payable silver until 100 million ounces have been delivered, after which the share reduces to 22.5 percent for the life of the mine, using a fixed payable factor of 90 percent. Wheaton also makes ongoing payments equal to 20 percent of the spot silver price for each ounce delivered. The company funded the deal with cash on hand, a new US$1.5 billion two-year term loan, and a drawdown on its existing revolving credit facility. Antamina is operated by Compañía Minera Antamina S.A., a joint venture of BHP, Glencore, Teck Resources, and Mitsubishi Corporation. BHP redeployed the proceeds toward high-return projects while retaining its copper, zinc, and lead exposure.