It would be very simple for Tether to just hold $1 for each 1 Tether coin. They could invest their cash in safe assets like treasury bills that yield 4% or more. Meanwhile, they pay no interest in Tethers. So they get a 4% return for doing nothing at all.
As far as I know, there is no evidence that they are doing anything else. (There is some evidence that they did something else in the past, when interest rates were way lower.) But this hasn't stopped tons of people from speculating that they are.
As far as I know, there is no evidence that they are doing anything else. (There is some evidence that they did something else in the past, when interest rates were way lower.) But this hasn't stopped tons of people from speculating that they are.