Tether is looking stressed. In the last three months, a lot of Tether has been cashed out. Look at the chart for Market Cap -> Last 3 months.[1] From US$82 billion to US$66 billion. Today, US$200 million was cashed out. Every few days, their market cap drops suddenly. At this rate, in a few months we'll find out how much backing Tether really has, because it is being paid out.
Stablecoins have two stable values: 1 and 0.