Big investment firms, including Macquarie, Fidelity, Tiger Global, and Coatue, purchased listed shares of Taiwanese TSMC, while Warren Buffet's Berkshire Hathaway sold its remaining stake, according to filings. Despite Buffet lauding TSMC as a "marvelous company," he expressed comfort with Japan over Taiwan investments amid rising tensions between the US and China. Macquarie added 78 million TSMC ADRs to an existing stake, with over $7.3 billion in the company. Fidelity increased its bet to almost $4 billion. Tiger Global invested $147.8 million in the shares. TSMC's US-listed shares increased 14.5% in 2021.