> this isn't that big of a number in the larger scale of US banking

It's not. It's just that we're seeing potentially 10% losses on the portfolio level [1], which could imply up to–up to!–5% losses to the banks' loans to those lenders.

Again, tens of billions of dollars of losses are totally absorbable. But Morgan Stanley's stock price took a hit when it gated one of these funds [2]. And some banks (Deutsche Bank, somehow, fucking again, Deutsche Bank) have small ($12n) but concentrated portfolios where a single wipeout could materially impair their ~$80bn of risk-weighted assets.

[1] https://www.reuters.com/business/us-private-credit-defaults-...

[2] https://www.wsj.com/livecoverage/stock-market-today-dow-sp-5...