More so than inflation, interest rate risk is the biggest factor in bond markets. If the Fed hikes and Yields rise then that will only lower the value of many bond ETFs. In response, many investors have turned to shorter-duration fixed income. However, the latest surge is off the charts. Lots of money is flowing into ultra-short cash like ETFs with the lowest duration treasuries. Investors are offloading even medium-duration treasuries in the five-three year window. PIMCO’s MINT saw almost $900 million in inflows setting a record week for the fund. Investors are just looking to store capital in the midst of all the interest rate risk in the economy right now.

FINSUM: It's unclear if one rate hike or two will send yields surging high enough, now might be the time to hold medium duration debt as a lot of the risk could be priced in.