According to CryptoSlate, four issuers of US dollar stable currency hold about US $182 billion of US treasury bond bonds, ranking 17th according to the ranking of the US Ministry of Finance. Including overnight treasury bond mortgage repo and monetary fund positions in heavy treasury bond bonds, the size is between Norway (US $195.9 billion) and Saudi Arabia (US $133.8 billion). Among them, Tether's USDT scale is the largest, holding US $120 billion of treasury bond in the first quarter, which has increased to more than US $125 billion in late May; Circle provided USD55.2 billion of reserves for USDC, including USD28.7 billion of treasury bond and USD26.5 billion of repurchase agreements; In the FDUSD reserve of First Digital, $1.3 billion is treasury bond; Paxos' PYUSD reserves of reverse repurchase agreements pledged by treasury bond correspond to about 880 million US dollars of government debt. According to data from the US Treasury Department in April, the total holdings of the four companies reached $182.4 billion, surpassing South Korea and the United Arab Emirates, and second only to Norway.