The story
Silver Wheaton was established in 2004. It was previously controlled by Goldcorp until December 7, 2006 when Goldcorp's sale of 18 million shares reduced its ownership to 48%. On February 14, 2008 Goldcorp divested itself completely of Silver Wheaton, selling 108 million shares for C$1.566 billion.
Silverstone Resources, acquired in 2009 previously traded on the TSX Venture Exchange under the symbol SST (delisted May 25, 2009 just after the takeover) as a Tier 1 stock (the exchange's premier tier).
In October 2020, the company was admitted in the London Stock Exchange under the ticker WPM.
From Wikipedia’s article on Wheaton Precious Metals, shared under CC BY-SA 4.0.7