Truth be told, it's institutional money.

Turns out that having a 100% guaranteed return is attractive to a lot of large-scale investors, even if the yields don't make the money machine go brrr.

This is one thing that worries me about the current administration. A lot of trust is built on the fact that the US gov't has never defaulted on a debt in its history. I feel like some people don't place enough weight into what that really means for both ourselves and the world.