Summary
- 12-month core inflation rose to 2.4%, the highest number since September 2008.
- Non-seasonally adjusted inflation was essentially flat, meaning minimal principal increases for TIPS and little change in the six-month total that will reset the I Bond’s variable rate.
- CPI-W was also flat, marking the first month of the three-month period that will set Social Security’s COLA for 2019.
Read my full analysis on SeekingAlpha.com
Also, I have updated my I Bonds and Inflation page with these new numbers.
Also updated: Social Security COLA calculations.
And here are new September Inflation Indexes for all TIPS.
Treasury Inflation-Protected Securities 
This is a personal decision and depends on your other investment options. If you think inflation will continue to be…