"The fact that the fear is gone is the main reason why we should be worried," Joachim Fels, a global economic advisor to PIMCO said.
Markets are rallying aggressively as the global economic expansion continues into its 10th year.
Fels, however, urged caution, pointing to rising inflation as a possible source of woe for investors.
"The only thing we have to fear is fear itself," Franklin Roosevelt famously said in his in inaugural address as US president.
Fast forward 85 years, and the thing...