I think it depends on what you plan to do with money you get from a cashed-in I bond. I see my I bond as a kind of savings account. No bank can match their rate, so I’m holding tight for the full 30 years.
But I suppose someone here can give you a stock that pays a good dividend, and might also appreciate in share price. That might be the better deal. Who knows?
Why do the tables I see at the links only go back to 1998 ?
That’s not 30 years ago ?
Did the I-bond not exist in 1997 ? or earlier ?
I’ve moved my cash into stablecoins. 10.1% interest, no limit and instant conversion to USD if I need it. And, I get satisfaction knowing my money isn’t part of the corrupt financial system.