Thanks all for your replies. FWIW, I have already maxed out the I-bonds for this year.
Can one lose money on a brokered CD purchase? For example, if I purchase a $10,000 brokered CD that matures in 1-3 months (around 2.5% interest rate), will I be guaranteed to keep my $10,000 plus whatever modest interest I get in that short amount of time? Or is there some risk of loss since it's on the secondary market?