If you look at the chart, historically past 40 years when 10/2 went negative one was eventually rewarded as the short end receded and the long end was left with the better yield and or cap gain. Everybody always said they wish they had loaded up on 30 year back in early 1980 era. Look at the chart. There is a reason why most didnt. Because the short end was higher, or too young and are just whimsical thinking like me. So few took the bait and held.
Of course I know nothing so I play all the angles. IBonds, CDs, short term Tbills and corps, floaters, resets, and longer end. I just bought a small amount of Empire District Electric 2035 my neighboring ute at 6.7% at 92.44 or so. It was over $120 earlier in year.
But I will buy 10k more IBonds come January, too!
https://fred.stlouisfed.org/series/T10Y2Y