What Caused the $340 Billion Gold Mine to Disappear Overnight?

Seabridge Gold Inc. (NYSE: SA) closed down 7.11% at $33.77 on the New York Stock Exchange. Trading volume topped 1.1 million shares, wiping out roughly $234 million in market capitalization—about KRW 340 billion—in a single day and bringing its total value to approximately $3.52 billion (around KRW 5.1 trillion).

On January 21, the company detailed its planned spin-off of the Courageous Lake gold project into a newly listed entity named Valor Gold, aiming to secure shareholder approval at a June 2026 meeting. Since the spin-off was first announced last December, the release of a concrete timeline has drawn market attention to a potential revaluation of the asset and the shares existing investors will receive in the new company.

Headquartered in Toronto, Seabridge Gold is a gold and copper development firm that holds 100% interests in multiple North American exploration assets. These include the large-scale KSM gold–copper project in British Columbia, the Iron Cap and Courageous Lake projects, Nevada’s Snowstorm project, and the Yukon’s 3 Aces. The company focuses on long-term development, prioritizing resource expansion and joint ventures with major partners over immediate commercial production, a strategy aimed at maximizing the value of its mineral assets.