This month has seen a record number of bond sales by blue-chip companies, incentivized by low interest rates and supercharged investor demand to refinance debt. The market priced 127 deals, surpassing September 2017’s 110 offerings as the busiest month, based on Bloomberg records began going back 20 years. The surge in supply came as a growing pile of bonds offer negative yields overseas, driving investors desperate for higher returns into the U.S. corporate credit market. Bloomberg's Jonathan Ferro sat down with PGIM's Michael Collins, Aberdeen's Luke Hickmore and George Rusnak of Wells Fargo to discuss whether credit markets were starting to look a little frothy.