History
Wheaton, formerly Silver Wheaton, grew from a silver streamer into a major precious metals streaming company, funding big deals with equity and debt before its US$4.3B Antamina purchase.
2010-2015: Building the stream portfolio
The record opens quietly. In June 2010 Silver Wheaton filed a late report on its 2009 purchase of Silverstone Resources, done by plan of arrangement. Silverstone shareholders received 0.185 Silver Wheaton shares per share, and the deal brought agreements to buy metal from the Minto, Cozamin and Neves-Corvo mines. Nothing else appears in the record until 2015.
In March 2015 the company agreed to buy a further 25% of the life-of-mine gold from Vale's Salobo mine in Brazil for US$900 million upfront, taking it to 50%. It paid for this partly with a US$800 million bought-deal share offering, closed on March 17: 38,930,000 shares at US$20.55. In November it agreed to buy a silver stream on Glencore's Antamina mine in Peru for US$900 million, funded from cash and its US$2 billion revolving credit facility, so debt rose.
2016-2019: Refinancing and a new name
To repay part of the debt drawn for Antamina, the company launched a share financing in March 2016, raised from US$500 million to US$550 million. It closed on April 7 with 33,135,000 shares sold at US$16.60. Existing shareholders were diluted again, and the offering ended the automatic purchase plan under the company's share buyback, which had bought back 3,060,454 shares.
In January 2018 the company, by then renamed Wheaton, agreed to replace its San Dimas silver stream with a gold-based stream with First Majestic, which was buying the mine's owner Primero. Wheaton was also to receive 20,914,590 First Majestic shares valued at US$151 million. The new stream began on May 10, 2018.
By March 2019 the company reported record 2018 gold production of 373,239 oz and settled its Canada Revenue Agency tax dispute for 2005-2010 with no additional cash taxes. It set a minimum dividend of US$0.09 per quarter for 2019.
2020-2024: A wave of development streams
Production beat guidance in 2019, at 706,900 gold equivalent ounces. In 2020 the company signed an at-the-market share program of up to US$300 million; the record shows no sales under it. In December 2020 it signed a new Cozamin silver stream for US$150 million, and in March 2021 a US$290 million gold stream on Santo Domingo in Chile.
Then came a run of deals for mines not yet built: Blackwater (US$441 million in total), Marathon (C$240 million), Curipamba (US$175.5 million) and Goose (US$125 million) between December 2021 and February 2022. Cangrejos (US$300 million) followed in May 2023, Mineral Park (US$115 million) in October 2023, and in November 2023 the purchase of Platreef and Kudz Ze Kayah streams from Orion funds plus a Curraghinalt stream. Kudz Ze Kayah still lacked two provincial permits and faced a Kaska Nation lawsuit.
Results were mixed. Production of 638,048 gold equivalent ounces in 2022 came in at the low end of revised guidance, hurt by weaker Salobo and Stillwater, and the company lowered its long-term averages. The Yauliyacu silver stream was terminated in Q4 2022, with Wheaton receiving US$132 million. In March 2024 it moved to a progressive dividend policy, starting at US$0.155 per share. In late 2024 it added Koné (US$625 million), an expanded Fenix deal and Kurmuk (US$175 million). Over these years the share count rose only modestly, from about 443 million at the end of 2017 to about 454 million in 2025, and the beats explain none of that growth.
2025-2026: Record output and the Antamina purchase
Production in 2024 beat guidance at over 633,000 gold equivalent ounces. In November 2025 the company signed the Spring Valley gold stream in Nevada, paying US$670 million as conditions are met. In 2025 it produced about 692,000 gold equivalent ounces, above its 600,000-670,000 guidance, helped by record Salobo results. Goose and Mineral Park ramped up more slowly than expected.
In February 2026 Wheaton agreed to buy BHP's 33.75% share of Antamina silver for US$4.3 billion at closing, expected around April 1, which would take its share to 67.5% of the mine's silver. It planned to pay with about US$1.9 billion of cash, a new US$1.5 billion two-year term loan and about US$0.9 billion drawn on its revolver, leaving expected net debt of about US$2.4 billion. It guided 2026 to 860,000-940,000 gold equivalent ounces and targeted about 1.2 million by 2030.
The latest beat, on April 2, 2026, was a US$275 million gold and silver stream on KGL Resources' Jervois copper project, its first in Australia, with first production expected in the second half of 2027. As of that date, the records seen do not confirm that the Antamina deal had closed.
Written from the 31 story beats below (2010 to 2 Apr 2026), which come from the company's own announcements and filings.