[dragontamer]

The Fed is about to raise rates by 0.75% (estimated, maybe 0.5% to 1%) this week.

What do you think will happen to the value of all those treasuries? Even short term ones will decline in value. Not only because of the actual rate increase, but also over the expectation of future rate increases to clamp down on inflation.

10% drop? Probably not. But any drop in price followed by a bankrun would end up in insolvency.

[thebean11]

For a 3 month treasury the drop will be tiny, like less than 1% tiny. It's would be easy to cover during a "bank run" given that (a) they hold some portion of deposits in cash anyway and (b) they've been earning interest on these deposits for years now. That’s my whole point..do you disagree?

[dragontamer]

Look man, I've lived through 2007 / 2008 when the money market funds broke the buck.

I know that even a portfolio consisting of nearly exclusively treasuries can still decline in value. That's all I'm saying. Banks, even with their high quality debt instruments, aren't immune to the effects of a bank run.

The value of those short term notes still climbs up and down daily on the market. With a big enough decline, issues can arise.