Subject: Re: Schwab: Problem to invest cash
3 or 6 months is too long. Max 30 days fixed. I want to be completely flexible without the risk of having to sell before maturity. That's worth more to me than the last %.

You're right that the rate won't difference won't be meaningful, but there is no need to worry about "risk" selling before maturity.
That time frame is so short that the market price change with interest rate changes (if any) is negligible.

Most people holding "cash" tend to go for 3 months. Including Berkshire, I think.

I'd probably worry more about the hassle to remember to reinvest the proceeds on maturity. The shorter the term, the more you have to do it : )

Jim