Tether is the second largest stable coin in crypto with 26 point five billion tokens in circulations. According to circle, the total us. D c in circulation has grown more than 26 hundred % since the beginning of 20 21. circles going to go public by a spack at a four point five billion dollar valuation. That was just announced two weeks ago on july eighth. Tether is number one, with 62 billion in circulation, via coin geco,. A web site that tracts these things.