Allocators love private credit because it barely moves. The returns come in smooth, the drawdowns look shallow, and it feels safer than a public bond paying the same coupon.
Cliff Asness has a name for most of that calm: volatility laundering. The asset is not steadier than its public cousin. It is marked less often. Stop observing a price and it stops jumping on your statement, but the risk never left. It waits, unpriced, until a redemption or a forced mark makes the whole move show up at once.
Hold that next to how a DeFi borrower actually pays for capital, because onchain the trick is not for sale.
A variable-rate borrower is marked every block. Pool utilization moves, the rate moves, and it hits the vault's realized cost immediately and in public. There is no quarterly mark to stand behind. You cannot make the volatility feel smaller by looking at it less often. It might be the most observed liability in finance.
So onchain there are only two honest positions. Carry the variance yourself, fully visible, or hand it to someone who is paid to hold it.
That second position is what a fixed rate is, and it is what IRIS runs. A borrower states the terms, and solvers compete to quote a fixed rate against them. The liquidity never leaves Aave or Morpho or wherever it came from. What changes hands is the variance. The solver who wins is paid to carry the repricing risk the borrower just shed.
The stability the borrower walks away with is not the private-credit kind. It is not calm borrowed from being unobserved. It is calm that someone underwrote, and they underwrote it for the one moment laundering always fails: the spike.