STOCKS | Serenity Says Foosung May Enter Key Revaluation Window Amid WF6 Supply Disruptions

Serenity, known online as the “white-haired stock god,” said in a post on X that South Korean semiconductor materials company Foosung, with a market value of about $1.2 billion, may be entering a key revaluation window due to disruptions in Japan-related tungsten hexafluoride (WF6) supply chains. According to Odaily, Serenity said WF6 is a key precursor material used in semiconductor etching and deposition processes and is important to global wafer manufacturing. Serenity added that if WF6 supply continues to tighten, it could directly affect demand-linked supply chains tied to about one-quarter of critical global capacity, potentially impacting major chipmakers and foundries including SK hynix, Samsung Electronics, and TSMC. Serenity compared the potential situation to a “Strait of Hormuz-style” supply bottleneck. Serenity estimated that Foosung currently accounts for about 10% of the global WF6 supply chain, and said its strategic importance could rise significantly if supply contracts or is restructured. Serenity emphasized that the comments were market observations and hypothetical analysis, and said there is no current position in the related asset.