Stablecoin issuer Tether (USDT) has secured an 8.2% stake in its partner company Antalpha, Synergymag reported. According to a disclosure filed with the U.S. Securities and Exchange Commission (SEC) on April 20 (local time), Tether affiliates and Chairman Giancarlo Devasini were found to hold a total of 1.95 million shares of Antalpha stock. Previously, Antalpha had raised approximately $49.3 million through an IPO.