According to the Wall Street Journal, Tether uses Cantor Fitzgerald to manage its $39 billion bond portfolio.
Cantor Fitzgerald is one of 25 primary dealers in the U.S. Treasury bond market that can trade directly with the Federal Reserve and guarantee the sale of U.S. government debt.
Earlier this week, Tether said it holds $67 billion in reserve assets, of which $39.2 billion is in U.S. Treasury bills.
The rest of the reserves are held in money market funds, cash and other liquid assets.