Tether $4.8 billion shares draw Spence Bitcoin Mining, Gold and Media According to Protos's analysis of US regulatory filings, Tether, the world's largest stable Bitcoin USDT, holds approximately & #036;$4.8 billion in capital exposure across 13 companies sponsored by the US, mining, bitcoin, cryptocurrency and business. Its three largest holdings are Twenty One Capital ($1.37 billion), Rumibel ($1.33 billion) and Adecoagro ($966 million), accounting for about 76% of the total. Some investments have done poorly, with Twenty One Capital down about 53% since listing, while Aurelion and Analpha fell about 91% and 90% respectively. link